CN103024378A - Motion information exporting method and device in video coding and decoding - Google Patents

Abstract

The invention discloses a method and device for deriving motion information in video coding and decoding. The deriving method for motion information includes: obtaining at least two adjacent blocks existing in the current pixel block to be processed, and calculating the difference between each adjacent block and the current pending pixel block. Process the adjacency strength of the pixel block, use the adjacent block with the strongest adjacency strength as a reference adjacent block, and take out the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector . In the present invention, by calculating the adjacency strength between each adjacent block and the current pixel block to be processed, the adjacent block with the strongest adjacency strength is used as a reference adjacent block, and the motion vector of the reference adjacent block is taken out as a motion vector prediction Value candidates or motion vector candidates or motion vector predictors or motion vectors can reduce the number of bits required for motion vector coding of pixel blocks to be processed and improve video coding efficiency.

Description

A method and device for deriving motion information in video encoding and decoding

technical field

The present invention relates to a video encoding and decoding technology, in particular to a method and device for deriving motion vectors in video encoding and decoding.

Background technique

Traditional video coding is based on hybrid coding framework. The so-called hybrid coding framework is a coding framework that comprehensively considers the methods of prediction, transformation and entropy coding. It mainly has the following characteristics:

1. Use inter-frame prediction to remove redundancy in the time domain;

2. Use intra prediction and transformation to remove redundancy in the spatial domain;

3. Use entropy coding to remove statistical redundancy;

In video coding and decoding, in order to minimize the bandwidth required for transmitting video data, multiple video compression coding methods are usually used to compress and code video data. Video compression coding methods commonly used in the prior art mainly include: intra-frame predictive coding and inter-frame predictive coding.

When inter-frame predictive encoding of video data is performed, the motion vector is obtained by motion estimation, and then the inter-frame prediction based on motion compensation is used, and then the residual block obtained by the inter-frame prediction is transformed, and then the transformation coefficient is quantized, and finally entropy coding is performed. .

Since the video data has a strong correlation between the time domain and the space domain, encoding the motion vector and the residual obtained from the motion estimation can obtain a larger compression rate. Motion vector prediction is a factor to improve coding performance, so motion vector prediction is an important part of video codec.

In the video coding standard H.264, the predicted motion vector is derived by taking the median value, that is, the x and y components of the motion vector of the adjacent blocks are respectively taken to form a motion vector with the middlemost value as the current one. Predicted motion vectors for blocks of pixels are processed.

In the latest video coding standard HEVC, motion vector prediction candidates are derived separately from the temporal and spatial domains. In the spatial domain, a motion vector candidate is derived from the left adjacent block of the current pixel block to be processed. The positions of the two left adjacent blocks are fixed, at the lower left corner of the current block, and have a priority order. A motion vector candidate is derived from the upper adjacent block of the current pixel block to be processed. The positions of the upper three adjacent blocks are fixed, respectively in the upper right corner and the upper left corner, and have a priority order. In the time domain, a space-domain motion vector candidate is derived from two co-located blocks, based on a pre-determined priority order.

After the motion vector predictor candidate or motion vector candidate or motion vector predictor or motion vector is obtained, it is also necessary to calculate the A motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector is subjected to a scaling process.

The motion vector prediction technology can only derive one motion vector information, and the motion vector derived at this time is called a motion vector predictor or a motion vector. The motion vector prediction value after scaling processing is added to the motion vector difference value mvd to obtain the motion vector of the current block; the motion vector after scaling processing is directly used as the motion vector of the current pixel block to be processed, and mvd is not transmitted.

The motion vector prediction technology can also derive multiple pieces of motion vector information. In this case, the derived motion vectors are referred to as motion vector predictor candidates or motion vector candidates. The motion vector predictor candidate after scaling processing is added to the motion vector difference value mvd to obtain the motion vector of the current block; the motion vector candidate after scaling processing is directly used as the motion vector of the current pixel block to be processed, and mvd is not transmitted.

The motion vector prediction technology can effectively improve the coding efficiency. The existing motion vector prediction technology can provide multiple motion vector prediction candidate values, but the derivation method of the motion vector prediction candidate values cannot guarantee the reasonable distribution of the obtained motion vector prediction candidate values, and The derived motion vectors are optimal.

Contents of the invention

The object of the present invention is to address the deficiencies of the prior art, propose to calculate the adjacency strength between each adjacent block and the current pixel block to be processed, use the adjacent block with the strongest adjacency strength as a reference adjacent block, and take out the reference The motion vector of the neighboring block is used as a motion vector predictor candidate or a motion vector candidate or a method of a motion vector predictor or a motion vector. By measuring the proximity of the adjacent block to the current pixel block to be processed by the adjacency strength, the drawbacks of the existing motion vector prediction technology that the motion vector derivation method is not suitable for the image segmentation characteristics can be avoided, and the video coding efficiency can be improved.

The purpose of the present invention is achieved through the following technical solutions:

A method for deriving motion information in video encoding and decoding, comprising the following steps:

(1) Obtain at least two adjacent blocks existing in the current pixel block to be processed;

(2) Calculate the adjacency strength between each adjacent block and the current pixel block to be processed;

(3) The adjacent block with the strongest adjacency strength is used as the reference adjacent block;

(4) Taking the motion vector of the reference neighboring block as a motion vector predictor candidate, a motion vector candidate, a motion vector predictor, or a motion vector. the

Further, in the step (2), the calculation of the adjacency strength between each block and the current pixel block to be processed is specifically: calculating the adjacent boundary between the adjacent block and the current pixel block to be processed Length, the length of the adjacent boundary is the adjacency strength.

Further, in the step (2), the calculation of the adjacency strength between each block and the current pixel block to be processed is specifically: calculating the overlapping area between the adjacent block and the current pixel block to be processed, that is, The adjacent block in the time domain is projected onto the area of the current frame that overlaps with the current pixel block to be processed, and the overlapping area is the adjacent intensity.

A device for deriving motion information in video codec, comprising:

An input unit for receiving and storing at least two adjacent blocks existing in the current pixel block to be processed,

an adjacency calculation unit for calculating the adjacency intensity between each adjacent block and the current pixel block to be processed,

a reference neighboring block selection unit using the neighboring block with the strongest adjacency strength as the reference neighboring block, and

An output unit for taking the motion vector of the reference neighboring block as a motion vector predictor candidate, a motion vector candidate, a motion vector predictor or a motion vector.

Further, the adjacent strength calculated by the adjacent block and the current pixel block to be processed is: the length of the adjacent boundary between the adjacent block and the current pixel block to be processed.

Further, the adjacency strength between the adjacent block and the current pixel block to be processed calculated by the adjacency strength calculation unit is: the overlapping area of the adjacent block and the current pixel block to be processed, that is, the adjacent block in the time domain is projected into the current frame and The area of the overlapped area of the current pixel blocks to be processed.

The beneficial effect of the present invention is that the motion information derivation method and device provided by the embodiment of the present invention calculate the adjacent block with the strongest adjacent block as the reference phase by calculating the adjacent block and the current pixel block to be processed. adjacent blocks, taking the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector. The embodiments of the present invention measure the proximity of adjacent blocks to the current pixel block to be processed by the adjacency strength, which can avoid the disadvantages of the existing motion vector prediction technology that the motion vector derivation method is not suitable for image segmentation characteristics, and can reduce the motion of the pixel block to be processed. Number of bits required for vector encoding to improve video encoding efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of a current pixel block to be processed and its adjacent blocks in the spatial domain provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a current pixel block to be processed and its neighboring blocks in the time domain provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of another current pixel block to be processed and its adjacent blocks in the spatial domain provided by an embodiment of the present invention;

FIG. 4 is a projection diagram of adjacent blocks in the time domain in the current frame provided by an embodiment of the present invention;

Fig. 5 is a schematic diagram of a pixel block currently to be processed and its adjacent blocks in the spatial domain provided by an embodiment of the present invention;

6 is a schematic structural diagram of a device for deriving motion information in video encoding and decoding according to an embodiment of the present invention;

7 is a schematic diagram of the module structure of adjacent strength units in a device for deriving motion information in video encoding and decoding according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a module structure of adjacent strength units in another apparatus for deriving motion information in video coding and decoding according to an embodiment of the present invention.

Detailed ways

Video data can be divided into pixel blocks of different sizes for motion estimation. For example, 4X4, 4X8, 8X4, 8X8, 4X16, 8X16, 12X16, 16X16, 16X32, 32X32, 32X64, 64X64, etc. A pixel block to be encoded or decoded is called a pixel block to be processed; a pixel block that has been encoded or decoded is called a processed pixel block. There may be multiple coded pixel blocks around the pixel block to be coded, and among these coded pixel blocks, there are pixel blocks in intra-frame coding mode and pixel blocks in inter-frame coding mode. Therefore, there are many situations when deriving the motion vectors of the adjacent pixel blocks of the current pixel block to be processed.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Embodiment one

FIG. 1 is a schematic diagram of a current pixel block to be processed and its adjacent pixel blocks in the spatial domain.

FIG. 2 is a schematic diagram of a pixel block currently to be processed and its neighboring blocks in the time domain.

This example provides a method for exporting motion information in video codec, including:

Step 1, obtaining at least two adjacent blocks existing in the current pixel block to be processed.

Specifically, as shown in Figure 1, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, ..., AN, B1, B2, ... BM, among which K blocks are inter-frame prediction blocks, K ≥0. The motion information of the block in the same direction as the reference frame of the current pixel block to be processed among the K inter-frame prediction blocks is stored in the input device. As shown in Figure 2, the center point of the current pixel block to be processed corresponds to the same coordinate point in the reference frame and the surrounding blocks Y1, Y2, ... YL as adjacent blocks in the time domain, and J blocks are inter-frame Prediction block, J≥0. The motion information of the block in the same direction as the reference frame of the current pixel block to be processed among the J inter-frame prediction blocks is stored in the input device.

Step 2, calculating the strength of adjacency between each adjacent block and the current pixel block to be processed.

Specifically, a possible implementation method is to set the side lengths of adjacent blocks as xa and ya, and the side lengths of the current pixel block to be processed as xb and yb. Calculate the value of 1/(|xa-xb|+|ya-yb|), and the obtained result is used as the adjacency strength between the adjacent block and the current pixel block to be processed.

Step 3, the adjacent block with the strongest adjacency strength is used as the reference adjacent block.

Specifically, a possible implementation method is to use the obtained adjacent block with the largest value of 1/(|xa-xb|+|ya-yb|) as the reference adjacent block of the current pixel block to be processed.

Step 4, taking the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment two

FIG. 3 is a schematic diagram of a current pixel block to be processed and its adjacent pixel blocks in the spatial domain.

This example provides a method for exporting motion information in video codec, including:

Step 1, obtaining at least two adjacent blocks existing in the current pixel block to be processed.

Specifically, as shown in FIG. 3, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, A3, B1, B2, and B3. One possible situation is that these six blocks are inter-frame prediction blocks. And the direction of the reference frame of the six inter-frame prediction blocks is the same as that of the current pixel block to be processed. Put these six adjacent blocks into the input device.

Step 2, calculating the strength of adjacency between each adjacent block and the current pixel block to be processed.

Specifically, a possible implementation method is to calculate the length of the adjacent boundary between the adjacent block and the current pixel block to be processed, as shown in Figure 3, A2, A3, B2 have adjacent boundaries with the current pixel block to be processed, The adjacent boundaries between A1, B1, B3 and the current pixel block to be processed are zero. Among A2, A3, and B2, the longest adjacent boundary is B2, followed by A2, and A3 is the shortest. Take the length of the adjacent boundary as the adjacency strength.

Step 3, the adjacent block with the strongest adjacency strength is used as the reference adjacent block.

Specifically, because the neighboring block B2 has the longest border with the current pixel block to be processed, the neighboring block with the strongest adjacency strength is the neighboring block B2. The neighboring block B2 is used as a reference neighboring block.

Step 4, taking the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与其参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and its reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment Three

FIG. 2 is a schematic diagram of a pixel block currently to be processed and its neighboring blocks in the time domain.

FIG. 4 is a schematic diagram of projecting adjacent blocks in the time domain into the frame where the current pixel block to be processed is located.

This example provides a method for exporting motion information in video codec, including:

Step 1, obtaining at least two adjacent blocks existing in the current pixel block to be processed.

As shown in Figure 2, the center point of the current pixel block to be processed corresponds to the same coordinate point in the reference frame and the surrounding blocks Y1, Y2, ... YL as adjacent blocks in the time domain, and J blocks are inter-frame Prediction block, J≥0. The motion information of the block in the same direction as the reference frame of the current pixel block to be processed among the J inter-frame prediction blocks is stored in the input device.

Step 2, calculating the strength of adjacency between each adjacent block and the current pixel block to be processed.

Specifically, a possible implementation method is to calculate the overlapping area of the adjacent block and the current pixel block to be processed, that is, to project the adjacent block in the time domain to the area of the area overlapping the current pixel block to be processed in the current frame. The projection method of adjacent blocks in the time domain is that each pixel included in the adjacent blocks in the time domain in the reference frame corresponds to the pixels with the same coordinates in the current frame, and the set of pixels in the current frame constitutes projection. One possible situation is that, as shown in Figure 4, the projections of adjacent blocks in the time domain are dotted frame areas Y1', Y2', Y3', Y4', Y5', which are related to the current pixel block X to be processed, thick and solid The overlapping area of the wireframe is a set of all pixels with the same pixel coordinates. As shown in Figure 4, the overlapping areas are respectively C1, C2, C3, C4, and C5. The areas of C1, C2, C3, C4, and C5 are the overlapping areas, which are taken as the adjacent strength.

Step 3, the adjacent block with the strongest adjacency strength is used as the reference adjacent block.

Specifically, as shown in Figure 4, the overlapping area C3 of Y3' and the current pixel block to be processed is the largest, that is, the adjacent block Y3 in the time domain corresponding to Y3' has the strongest adjacency with the current pixel block to be processed. Take Y3 as the reference neighboring block.

Step 4, taking the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与其参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and its reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment four

FIG. 2 is a schematic diagram of a pixel block currently to be processed and its neighboring blocks in the time domain.

FIG. 3 is a schematic diagram of a current pixel block to be processed and its adjacent pixel blocks in the spatial domain.

FIG. 4 is a schematic diagram of projecting adjacent blocks in the time domain into the frame where the current pixel block to be processed is located.

This example provides a method for exporting motion information in video codec, including:

Step 1, obtaining at least two adjacent blocks existing in the current pixel block to be processed.

Specifically, as shown in FIG. 3, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, A3, B1, B2, and B3. One possible situation is that these six blocks are inter-frame prediction blocks. And the direction of the reference frame of the six inter-frame prediction blocks is the same as that of the current pixel block to be processed. Put these six adjacent blocks into the input device.

As shown in Figure 2, the center point of the current pixel block to be processed corresponds to the same coordinate point in the reference frame and the surrounding blocks Y1, Y2, ... YL as adjacent blocks in the time domain, and J blocks are inter-frame Prediction block, J≥0. The motion information of the block in the same direction as the reference frame of the current pixel block to be processed among the J inter-frame prediction blocks is stored in the input device.

Step 2, calculating the strength of adjacency between each adjacent block and the current pixel block to be processed.

Specifically, a possible implementation method is to calculate the area corresponding to the adjacent boundary between the adjacent blocks in the spatial domain and the current pixel block to be processed. As shown in Figure 3, A2, A3, and B2 are adjacent to the current pixel block to be processed Boundaries, A1, B1, B3 and the adjacent boundaries of the current pixel block to be processed are zero. The area corresponding to the adjacent boundary of the adjacent block in the space domain is the area of a rectangle formed by taking the adjacent boundary as one side and the side without the adjacent boundary between the adjacent block and the current block as the other side. As shown in Figure 3, the corresponding areas of the adjacent boundaries of A2, A3, and B2 are the area of A2, the area of A3, and the area of B2, respectively.

Calculating the projected overlapping area of adjacent blocks in the time domain. Specifically, a possible implementation method is to calculate the overlapping area of the adjacent blocks and the current pixel block to be processed, that is, projecting the adjacent blocks in the time domain into the current frame and the current pixel block to be processed The area of the area where the blocks of pixels overlap. The projection method of adjacent blocks in the time domain is that each pixel included in the adjacent blocks in the time domain in the reference frame corresponds to the pixels with the same coordinates in the current frame, and the set of pixels in the current frame constitutes projection. One possible situation is that, as shown in Figure 4, the projections of adjacent blocks in the time domain are dotted frame areas Y1', Y2', Y3', Y4', Y5', which are related to the current pixel block X to be processed, thick and solid The overlapping area of the wireframe is a set of all pixels with the same pixel coordinates. In Figure 4, the overlapping areas are respectively C1, C2, C3, C4, and C5. the

Take the area of A2, A3, B2, C1, C2, C3, C4, and C5 as the adjacency strength.

Step 3, the adjacent block with the strongest adjacency strength is used as the reference adjacent block.

Specifically, comparing the areas of A2, A3, B2, C1, C2, C3, C4, and C5, it can be seen that the area of B2 is the largest among all areas, that is, its adjacency strength is the strongest. Therefore, the neighboring block B2 is used as a reference neighboring block.

Step 4, taking the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment five

This example provides a method for exporting motion information in video codec, including:

Step 1, obtaining at least two adjacent blocks existing in the current pixel block to be processed.

Specifically, as shown in FIG. 5, a possible situation for the left adjacent blocks A1, A2, A3, and A4 of the current pixel block to be processed is that these six blocks are inter-frame prediction blocks, and the six inter-frame prediction blocks are The prediction block is in the same direction as the reference frame of the current pixel block to be processed. Put these six adjacent blocks into the input device.

Step 2, calculating the strength of adjacency between each adjacent block and the current pixel block to be processed.

Specifically, a possible implementation method is to calculate the length of the adjacent border between the adjacent block and the current pixel block to be processed, as shown in Figure 5, A1, A2, A3, A4 are adjacent to the current pixel block to be processed Boundaries, A1, A2, A3, A4 and the adjacent boundaries of the current pixel block to be processed are A3>A2=A1>A4 from long to short. Take the length of the adjacent boundary as the adjacency strength.

Step 3, the adjacent block with the strongest adjacency strength is used as the reference adjacent block.

Specifically, since the neighboring block A3 has the longest border with the current pixel block to be processed, the neighboring block with the strongest adjacency strength is the neighboring block A3. Adjacent block A3 is used as a reference adjacent block.

Step 4, taking the motion vector of the reference adjacent block as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment six

This example provides a method for exporting motion information in video codec, including:

In skip and direct modes, motion information is provided for the current pixel block to be processed.

Step 1, obtaining at least two adjacent blocks existing in the current pixel block to be processed.

Specifically, as shown in Figure 1, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, ..., AN, B1, B2, ... BM, among which K blocks are inter-frame prediction blocks, K ≥0. The motion information of the block in the same direction as the reference frame of the current pixel block to be processed among the K inter-frame prediction blocks is stored in the input device. As shown in Figure 2, the center point of the current pixel block to be processed corresponds to the same coordinate point in the reference frame and the surrounding blocks Y1, Y2, ... YL as adjacent blocks in the time domain, and J blocks are inter-frame Prediction block, J≥0. The motion information of the block in the same direction as the reference frame of the current pixel block to be processed among the J inter-frame prediction blocks is stored in the input device.

Step 2, calculating the strength of adjacency between each adjacent block and the current pixel block to be processed.

Specifically, a possible implementation method is to set the side lengths of adjacent blocks as xa and ya, and the side lengths of the current pixel block to be processed as xb and yb. Calculate the value of 1/(|xa-xb|+|ya-yb|), and the obtained result is used as the adjacency strength between the adjacent block and the current pixel block to be processed.

Step 3, the adjacent block with the strongest adjacency strength is used as the reference adjacent block.

Specifically, a possible implementation method is to use the obtained adjacent block with the largest value of 1/(|xa-xb|+|ya-yb|) as the reference adjacent block of the current pixel block to be processed.

Step 4: Take out the motion vector information of the reference adjacent block as a motion vector information predictor candidate or motion vector information candidate or motion vector information predictor or motion vector information.

Specifically, the motion vector information not only includes the x and y components of the motion vector, but also includes reference direction, reference frame index and other information. If it is a motion vector information predictor candidate or a motion vector information candidate, put the motion vector information of the reference adjacent block into the motion vector information predictor candidate or motion vector information candidate list. If the motion vector information predictor or motion vector information is fetched, the motion vector of the reference adjacent block is directly used as the motion vector information predictor or motion vector information. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment seven

FIG. 2 is a schematic diagram of a pixel block currently to be processed and its neighboring blocks in the time domain.

FIG. 3 is a schematic diagram of a current pixel block to be processed and its adjacent pixel blocks in the spatial domain.

This example provides a method for exporting motion information in video codec, including:

Step 1, as shown in Figure 3, put the motion vector information of the inter-frame prediction mode blocks in the left adjacent blocks A1, A2, and A3 of the current pixel block X to be processed into group A; The motion vector information of inter-frame prediction mode blocks in adjacent blocks B1, B2, and B3 is placed in group B; one possible situation is that the reference frame of the adjacent block in group A and group B is in the same direction as the reference frame of the current pixel block to be processed . Put the motion vector information of the corresponding pixel block in the time-domain reference frame and the inter-frame prediction mode block in the adjacent block into group D.

For obtaining the motion vector information of the corresponding pixel block in the time-domain reference frame and its adjacent block in the inter-frame prediction mode, specifically, a possible implementation method is: the center point of the current pixel block to be processed corresponds to the same The block where the coordinate point is located and the surrounding blocks Y1, Y2, ... YL are used as adjacent blocks in the time domain, among which J blocks are inter-frame prediction blocks, J≥0. Put the motion information of the block in the same direction as the reference frame direction of the current pixel block to be processed among the J inter-frame prediction blocks into group D. the

Step 2, calculating the adjacency strength between adjacent blocks in group A and group B and the current pixel block to be processed.

Specifically, a possible implementation is to calculate the lengths of the adjacent borders between adjacent blocks in group A and group B and the current pixel block to be processed, as shown in Figure 3, A2, A3, B2 and the current pixel block to be processed Blocks have adjacent boundaries, and the adjacent boundaries between A1, B1, B3 and the current pixel block to be processed are zero. In group A, the adjacent boundary of A2 is the longest; in group B, the adjacent boundary of B2 is the longest. Take the adjacent boundary length as the adjacency strength.

Step 3, deriving a motion vector predictor or a motion vector or motion vector predictor candidate or motion vector candidate.

A possible implementation method is to derive the motion vector of the block A2 with the strongest adjacency strength in group A, denoted as mva;

Deriving the motion vector of block B2 with the strongest adjacency strength in group B, denoted as mvb;

Deriving the motion vector of the block with the largest area in the block where the motion vector in group D is located is denoted as mvd;

Put mva, mvb, mvd into motion vector predictor candidate or motion vector candidate cache as motion vector predictor candidate or motion vector candidate.

Another possible implementation is to derive a motion vector predictor or a motion vector. Specifically, the motion vector of the block with the strongest adjacent strength in the block where mva and mvb are located is used as the predicted value of the motion vector of the current block or the motion vector of the current block;

When mva and mvb do not exist, mvd is used as the predictor of the motion vector of the current block or the motion vector of the current block.

Embodiment eight

FIG. 2 is a schematic diagram of a pixel block currently to be processed and its neighboring blocks in the time domain.

FIG. 3 is a schematic diagram of a current pixel block to be processed and its adjacent pixel blocks in the spatial domain.

This example provides a method for exporting motion information in video codec, including:

Step 1, as shown in Figure 3, put the motion vector information of the inter-frame prediction mode blocks in the left adjacent blocks A1, A2, and A3 of the current pixel block X to be processed into group A; The motion vector information of inter-frame prediction mode blocks in adjacent blocks B1, B2, and B3 is placed in group B; one possible situation is that the reference frame of the adjacent block in group A and group B is in the same direction as the reference frame of the current pixel block to be processed . Put the motion vector information of the corresponding pixel block in the time-domain reference frame and the inter-frame prediction mode block in the adjacent block into group D.

For obtaining the motion vector information of the corresponding pixel block in the time-domain reference frame and its adjacent block in the inter-frame prediction mode, specifically, a possible implementation method is: the center point of the current pixel block to be processed corresponds to the same The block where the coordinate point is located and the surrounding blocks Y1, Y2, ... YL are used as adjacent blocks in the time domain, among which J blocks are inter-frame prediction blocks, J≥0. Put the motion information of the block in the same direction as the reference frame direction of the current pixel block to be processed among the J inter-frame prediction blocks into group D. the

Step 2, calculating the adjacency strength between adjacent blocks in group A and group B and the current pixel block to be processed.

Specifically, a possible implementation is to calculate the lengths of the adjacent borders between adjacent blocks in group A and group B and the current pixel block to be processed, as shown in Figure 3, A2, A3, B2 and the current pixel block to be processed Blocks have adjacent boundaries, and the adjacent boundaries between A1, B1, B3 and the current pixel block to be processed are zero. In group A, the adjacent boundary of A2 is the longest; in group B, the adjacent boundary of B2 is the longest. Take the adjacent boundary length as the adjacency strength.

该运动矢量所在帧与参考帧距离得到的结果放入对应的组中。 Step 3, preprocessing the motion vectors in group D. Specifically, a possible implementation method is to delete the motion vectors in the group that are different from the reference frame direction of the current pixel block to be processed; Refer to the different motion vectors of the frame, do the following processing, the motion vector

The result of the distance between the frame of the motion vector and the reference frame is put into the corresponding group.

Step 4, deriving a motion vector predictor or a motion vector or motion vector predictor candidate or motion vector candidate.

A possible implementation method is to derive the motion vector of the block A2 with the strongest adjacency strength in group A, denoted as mva;

Deriving the motion vector of block B2 with the strongest adjacency strength in group B, denoted as mvb;

The x component mvx of the preprocessed motion vector in the group D is averaged to obtain mvx_avr_d, and the motion vector of the x component mvx closest to mvx_avr_d among these motion vectors is recorded as mvd;

Put mva, mvb, mvd into motion vector predictor candidate or motion vector candidate cache as motion vector predictor candidate or motion vector candidate.

Another possible implementation is to derive a motion vector predictor or a motion vector. Specifically, mva, mvb and the x component of mvd obtained according to the above method are averaged to obtain mvx_avr, and the motion vector with the x component closest to mvx_avr among mva, mvb and mvd is selected as the predicted value of the current block motion vector or the current block Motion vector.

Embodiment nine

FIG. 2 is a schematic diagram of a pixel block currently to be processed and its neighboring blocks in the time domain.

FIG. 3 is a schematic diagram of a current pixel block to be processed and its adjacent pixel blocks in the spatial domain.

This example provides a method for exporting motion information in video codec, including:

Step 1, as shown in Figure 3, put the motion vector information of the inter-frame prediction mode blocks in the left adjacent blocks A1, A2, and A3 of the current pixel block X to be processed into group A; The motion vector information of inter-frame prediction mode blocks in adjacent blocks B1, B2, and B3 is placed in group B; one possible situation is that the reference frame of the adjacent block in group A and group B is in the same direction as the reference frame of the current pixel block to be processed . Put the motion vector information of the corresponding pixel block in the time-domain reference frame and the inter-frame prediction mode block in the adjacent block into group D.

For obtaining the motion vector information of the corresponding pixel block in the time-domain reference frame and its adjacent block in the inter-frame prediction mode, specifically, a possible implementation method is: the center point of the current pixel block to be processed corresponds to the same The block where the coordinate point is located and the surrounding blocks Y1, Y2, ... YL are used as adjacent blocks in the time domain, among which J blocks are inter-frame prediction blocks, J≥0. Put the motion information of the block in the same direction as the reference frame direction of the current pixel block to be processed among the J inter-frame prediction blocks into group D. the

Step 2, calculating the adjacency strength between adjacent blocks in group A and group B and the current pixel block to be processed.

Specifically, a possible implementation is to calculate the lengths of the adjacent borders between adjacent blocks in group A and group B and the current pixel block to be processed, as shown in Figure 3, A2, A3, B2 and the current pixel block to be processed Blocks have adjacent boundaries, and the adjacent boundaries between A1, B1, B3 and the current pixel block to be processed are zero. In group A, the adjacent boundary of A2 is the longest; in group B, the adjacent boundary of B2 is the longest. Take the adjacent boundary length as the adjacency strength.

该运动矢量所在帧与参考帧距离得到的结果放入对应的组中。 Step 3, preprocessing the motion vectors in group D. Specifically, a possible implementation method is to delete the motion vectors in the group that are different from the reference frame direction of the current pixel block to be processed; Different motion vectors of the reference frame are processed as follows, the motion vector

The result of the distance between the frame of the motion vector and the reference frame is put into the corresponding group.

Step 4, deriving a motion vector predictor or a motion vector or motion vector predictor candidate or motion vector candidate.

A possible implementation method is to derive the motion vector of the block A2 with the strongest adjacency strength in group A, denoted as mva;

Deriving the motion vector of block B2 with the strongest adjacency strength in group B, denoted as mvb;

Sort the x component mvx of the motion vectors in group D from small to large, and derive a motion vector with mvx in the middle position or the smaller motion vector among the two motion vectors with mvx in the middle position, denoted as mvd.

Put mva, mvb, mvd into motion vector predictor candidate or motion vector candidate cache as motion vector predictor candidate or motion vector candidate.

Another possible implementation is to derive a motion vector predictor or a motion vector. Specifically, sort the x components mvx of mva, mvb, and mvd obtained according to the above method from small to large, and take a motion vector with mvx in the middle position or the smaller of the two motion vectors with mvx in the middle position The motion vector of is a motion vector predictor candidate or a motion vector candidate.

Embodiment ten

FIG. 5 is a schematic structural diagram of an apparatus for deriving motion information in video encoding and decoding according to an embodiment of the present invention. As shown in FIG. 5 , in this embodiment, the device for deriving motion vectors in video coding and decoding includes an input unit 310 , an adjacency strength calculation unit 320 , a reference adjacent block selection unit 330 , and an output unit 340 .

The input unit 310 provided in this embodiment is specifically used for:

Specifically, as shown in Figure 1, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, ..., AN, B1, B2, ... BM, among which K blocks are inter-frame prediction blocks, K ≥0. Store the motion information of the block in the same direction as the reference frame direction of the current pixel block to be processed among the K inter-frame prediction blocks into the input unit. As shown in Figure 2, the center point of the current pixel block to be processed corresponds to the same coordinate point in the reference frame and the surrounding blocks Y1, Y2, ... YL as adjacent blocks in the time domain, and J blocks are inter-frame Prediction block, J≥0. Store the motion information of the block in the same direction as the reference frame direction of the current pixel block to be processed among the J inter-frame prediction blocks into the input unit.

The adjacency strength calculation unit 320 provided in this embodiment is specifically used for:

The strength of adjacency between each adjacent block and the current pixel block to be processed is calculated. Specifically, a possible implementation method is to set the side lengths of adjacent blocks as xa and ya, and the side lengths of the current pixel block to be processed as xb and yb. Calculate the value of 1/(|xa-xb|+|ya-yb|), and the obtained result is used as the adjacency strength between the adjacent block and the current pixel block to be processed.

The reference adjacent block selection unit 330 provided in this embodiment is specifically used for:

A possible implementation method is to use the adjacent block with the largest value of 1/(|xa-xb|+|ya-yb|) as the reference adjacent block of the current pixel block to be processed.

The reference adjacent block selection unit output unit 340 provided in this embodiment is specifically used for:

The motion vector of the reference neighboring block is taken out as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment Eleven

An embodiment of the present invention provides a device for deriving motion information in video coding and decoding.

As shown in FIG. 5 , in this embodiment, the device for deriving motion vectors in video coding and decoding includes an input unit 310 , an adjacency strength calculation unit 320 , a reference adjacent block selection unit 330 , and an output unit 340 .

The input unit 310 provided in this embodiment is specifically used for:

Specifically, as shown in FIG. 3, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, A3, B1, B2, and B3. One possible situation is that these six blocks are inter-frame prediction blocks. And the direction of the reference frame of the six inter-frame prediction blocks is the same as that of the current pixel block to be processed. Put these six adjacent blocks into the input cell.

The adjacency strength calculation unit 320 provided in this embodiment is specifically used for:

The strength of adjacency between each adjacent block and the current pixel block to be processed is calculated. Specifically, a possible implementation device is, as shown in FIG. 7, the adjacency strength calculation unit includes a length calculation module, which is specifically used to calculate the length of the adjacent boundary between the adjacent block and the current pixel block to be processed, as shown in FIG. 3 It shows that there are adjacent boundaries between A2, A3, B2 and the current pixel block to be processed, and the adjacent boundaries between A1, B1, B3 and the current pixel block to be processed are zero. Among A2, A3, and B2, the longest adjacent boundary is B2, followed by A2, and A3 is the shortest. The adjacency strength calculation unit also includes an assignment module, which is specifically used to assign the length value of the adjacent boundary to the adjacency strength.

The reference adjacent block selection unit 330 provided in this embodiment is specifically used for:

A possible implementation method is to use the obtained adjacent block with the largest adjacent strength value as the reference adjacent block of the current pixel block to be processed.

The reference adjacent block selection unit output unit 340 provided in this embodiment is specifically used for:

The motion vector of the reference neighboring block is taken out as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Embodiment 12

An embodiment of the present invention provides a device for deriving motion information in video coding and decoding.

As shown in FIG. 5 , in this embodiment, the device for deriving motion vectors in video coding and decoding includes an input unit 310 , an adjacency strength calculation unit 320 , a reference adjacent block selection unit 330 , and an output unit 340 .

The input unit 310 provided in this embodiment is specifically used for:

Specifically, as shown in FIG. 3, the adjacent blocks in the spatial domain of the current pixel block to be processed include A1, A2, A3, B1, B2, and B3. One possible situation is that these six blocks are inter-frame prediction blocks. And the direction of the reference frame of the six inter-frame prediction blocks is the same as that of the current pixel block to be processed. Put these six adjacent blocks into the input cell.

The adjacency strength calculation unit 320 provided in this embodiment is specifically used for:

The strength of adjacency between each adjacent block and the current pixel block to be processed is calculated. Specifically, a possible implementation device is, as shown in FIG. 8 , the adjacency strength calculation unit includes a projection module. Specifically, a possible implementation method is to calculate the overlapping area of the adjacent block and the current pixel block to be processed, That is, project the adjacent blocks in the time domain to the area of the area that overlaps with the current pixel block to be processed in the current frame. The projection method of adjacent blocks in the time domain is that each pixel included in the adjacent blocks in the time domain in the reference frame corresponds to the pixels with the same coordinates in the current frame, and the set of pixels in the current frame constitutes the image of the adjacent blocks in the time domain in the current frame. projection. One possible situation is that, as shown in Figure 4, the projections of adjacent blocks in the time domain are dotted frame areas Y1', Y2', Y3', Y4', Y5', which are related to the current pixel block X to be processed, thick and solid The overlapping area of the wireframe is a set of all pixels with the same pixel coordinates. The adjacency strength calculation unit includes a coincidence area calculation module, specifically,

As shown in Figure 4, the overlapping areas are respectively C1, C2, C3, C4, and C5. Calculate the areas of C1, C2, C3, C4, and C5, that is, the overlapping area. The adjacency strength calculation unit also includes an assignment module, which assigns the overlapping areas corresponding to adjacent blocks as the adjacency strength.

The reference adjacent block selection unit 330 provided in this embodiment is specifically used for:

A possible implementation method is to use the obtained adjacent block with the largest adjacent strength value as the reference adjacent block of the current pixel block to be processed.

The reference adjacent block selection unit output unit 340 provided in this embodiment is specifically used for:

The motion vector of the reference neighboring block is taken out as a motion vector predictor candidate or a motion vector candidate or a motion vector predictor or a motion vector.

该运动矢量所在帧与参考帧距离。此后处理不在本专利权利要求中，但为使实施例更清晰完整，将其加入实施例中。 Specifically, if a motion vector predictor candidate or a motion vector candidate is fetched, put the motion vector of the reference adjacent block into the motion vector predictor candidate or motion vector candidate list. If the motion vector predictor or motion vector is fetched, the motion vector of the reference adjacent block is directly used as the motion vector predictor or motion vector. After obtaining the motion vector predictor candidate or the motion vector predictor or the motion vector predictor or the motion vector, corresponding post-processing needs to be performed on the motion vector predictor candidate or the motion vector candidate or the motion vector predictor or the motion vector. Keep the same motion vector as the reference frame of the current pixel block to be processed in the motion vector of the adjacent block in the space domain; for the motion vector and time of the motion vector in the motion vector of the adjacent block in the space domain with the same direction as the reference frame of the pixel block to be processed but different from the reference frame The motion vector reserved in the domain is processed as follows, the motion vector

The distance between the frame where the motion vector is located and the reference frame. The subsequent processing is not included in the patent claims, but it is added to the embodiments in order to make the embodiments clearer and more complete.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. A method for motion information derivation in video codec, is characterized in that, mainly comprises the following steps: (1) Obtain at least two adjacent blocks existing in the current pixel block to be processed; (2) Calculate the adjacency strength between each adjacent block and the current pixel block to be processed; (3) The adjacent block with the strongest adjacency strength is used as the reference adjacent block; (4) Taking the motion vector of the reference neighboring block as a motion vector predictor candidate, a motion vector candidate, a motion vector predictor, or a motion vector. 2. The motion information derivation method according to claim 1, characterized in that, in the step 2, the calculation of the adjacency strength between each block and the current pixel block to be processed is specifically: calculating the adjacent The length of the adjacent boundary between the block and the current pixel block to be processed, and the length of the adjacent boundary is the adjacent strength. 3. The motion information derivation method according to claim 1, characterized in that, in the step 2, the calculation of the adjacency strength between each block and the current pixel block to be processed is specifically: calculating the adjacent The overlapping area of the block and the current pixel block to be processed is the area of the adjacent block in the time domain projected to the area in the current frame that overlaps with the current pixel block to be processed, and the overlapping area is the adjacency strength. 4. A device for deriving motion information in video codec, characterized in that it mainly includes: An input unit for receiving and storing at least two adjacent blocks existing in the current pixel block to be processed, an adjacency calculation unit for calculating the adjacency intensity between each adjacent block and the current pixel block to be processed, a reference neighboring block selection unit using the neighboring block with the strongest adjacency strength as the reference neighboring block, and An output unit for taking the motion vector of the reference neighboring block as a motion vector predictor candidate, a motion vector candidate, a motion vector predictor or a motion vector. 5. The motion information deriving device according to claim 4, characterized in that, the adjacency strength between the adjacent block and the current pixel block to be processed calculated by the adjacency strength calculation unit is: the adjacency between the adjacent block and the current pixel block to be processed The length of the adjacent border. 6. The motion information deriving device according to claim 4, wherein the adjacent block calculated by the adjacency strength calculation unit and the current pixel block to be processed is: the overlap of the adjacent block and the current pixel block to be processed Area, that is, project the neighboring block in the time domain to the area in the current frame that overlaps with the current pixel block to be processed.

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