CN111713109B - Video processing method, device and equipment - Google Patents
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Abstract
一种视频处理方法、装置和设备,方法包括:获取当前帧的第一图像块的运动信息;对应于存储单元存储所述运动信息,所述运动信息用于所述第一图像块的空域相邻块的编码或解码;其中,所述存储单元大小为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。本公开实施例可以降低视频编解码过程中的数据处理压力。
A video processing method, device and equipment, the method comprising: obtaining motion information of a first image block of a current frame; Encoding or decoding of adjacent blocks; wherein, the size of the storage unit is M×N, and M and N meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N is greater than the size of all image blocks in the current frame Minimum vertical size. The embodiments of the present disclosure can reduce the data processing pressure in the process of video encoding and decoding.
Description
技术领域technical field
本公开涉及图像处理领域,并且更为具体地,涉及一种视频处理方法、装置和设备。The present disclosure relates to the field of image processing, and more specifically, to a video processing method, device and equipment.
背景技术Background technique
预测是主流视频编码框架的重要模块,预测可以包括帧内预测和帧间预测。在帧间预测模式中,编解码过程需要参照其他图像块的运动信息来确定当前图像块的运动信息,进而完成图像预测。因此,需要存储大量图像块的运动信息以供其他运动信息参考。Prediction is an important module of the mainstream video coding framework, and prediction can include intra-frame prediction and inter-frame prediction. In the inter-frame prediction mode, the codec process needs to refer to the motion information of other image blocks to determine the motion information of the current image block, and then complete the image prediction. Therefore, motion information of a large number of image blocks needs to be stored for reference by other motion information.
因此,如何在帧间预测模式下降低运动信息的数据处理压力是一种亟需解决的问题。Therefore, how to reduce the data processing pressure of motion information in the inter prediction mode is an urgent problem to be solved.
发明内容Contents of the invention
根据本公开的第一方面,提供一种视频处理方法,包括:According to a first aspect of the present disclosure, a video processing method is provided, including:
获取当前帧的第一图像块的运动信息;Obtain the motion information of the first image block of the current frame;
对应于存储单元存储所述运动信息,所述运动信息用于所述第一图像块的空域相邻块的编码或解码;storing the motion information corresponding to the storage unit, the motion information being used for encoding or decoding of spatial adjacent blocks of the first image block;
其中,所述存储单元大小为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。Wherein, the size of the storage unit is M×N, and M and N meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N is greater than the minimum vertical size of all image blocks in the current frame.
本实施例提供的视频处理方法通过增大运动信息对应的存储单元的尺寸,减少存储的运动信息的数量,可以有效降低视频编解码过程中的数据处理压力。The video processing method provided in this embodiment can effectively reduce the data processing pressure in the process of video encoding and decoding by increasing the size of the storage unit corresponding to the motion information and reducing the amount of stored motion information.
根据本公开的第二方面,提供一种视频处理方法,包括:According to a second aspect of the present disclosure, a video processing method is provided, including:
获取当前帧的第一图像块的运动信息;Obtain the motion information of the first image block of the current frame;
将所述运动信息转换成指数形式表示的运动信息,并对应于存储单元存储所述指数形式表示的运动信息,所述指数形式表示的运动信息用于所述第一图像块的空域相邻块的编码或解码。Converting the motion information into motion information expressed in exponential form, and storing the motion information expressed in exponential form corresponding to the storage unit, the motion information expressed in exponential form is used for spatial adjacent blocks of the first image block encoding or decoding.
本实施例提供的视频处理方法通过使用指数形式存储空域运动信息,可以有效降低空域运动信息的存储空间占用,减少数据传输量,进而有效降低视频编解码过程中的数据处理压力。The video processing method provided in this embodiment stores spatial motion information in exponential form, which can effectively reduce storage space occupation of spatial motion information, reduce data transmission volume, and further effectively reduce data processing pressure in the video encoding and decoding process.
根据本公开的第三方面,提供一种视频处理装置,包括:According to a third aspect of the present disclosure, a video processing device is provided, including:
运动信息获取模块,用于获取当前帧的第一图像块的运动信息;A motion information acquisition module, configured to acquire motion information of the first image block of the current frame;
运动信息存储模块,用于对应于存储单元存储所述运动信息,所述运动信息用于所述第一图像块的空域相邻块的编码或解码;A motion information storage module, configured to store the motion information corresponding to the storage unit, and the motion information is used for encoding or decoding of spatial adjacent blocks of the first image block;
其中,所述存储单元大小为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。Wherein, the size of the storage unit is M×N, and M and N meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N is greater than the minimum vertical size of all image blocks in the current frame.
本实施例提供的视频处理装置通过增大运动信息对应的存储单元的尺寸,减少存储的运动信息的数量,可以有效降低视频编解码过程中的数据处理压力。The video processing device provided in this embodiment can effectively reduce the data processing pressure in the process of video encoding and decoding by increasing the size of the storage unit corresponding to the motion information and reducing the amount of stored motion information.
根据本公开的第四方面,提供一种视频处理装置,包括:According to a fourth aspect of the present disclosure, a video processing device is provided, including:
运动信息获取模块,用于获取当前帧的第一图像块的运动信息;A motion information acquisition module, configured to acquire motion information of the first image block of the current frame;
运动信息存储模块,用于将所述运动信息转换成指数形式表示的运动信息,并对应于存储单元存储所述指数形式表示的运动信息,所述指数形式表示的运动信息用于所述第一图像块的空域相邻块的编码或解码。a motion information storage module, configured to convert the motion information into motion information expressed in exponential form, and store the motion information represented in exponential form corresponding to the storage unit, and the motion information represented in exponential form is used for the first Coding or decoding of spatially adjacent blocks of an image block.
本实施例提供的视频处理装置通过使用指数形式存储空域运动信息,可以有效降低空域运动信息的存储空间占用,减少数据传输量,进而有效降低视频编解码过程中的数据处理压力。The video processing device provided by this embodiment stores spatial motion information in exponential form, which can effectively reduce storage space occupation of spatial motion information, reduce data transmission volume, and further effectively reduce data processing pressure during video encoding and decoding.
根据本公开的第五方面,提供一种视频处理设备,包括:According to a fifth aspect of the present disclosure, there is provided a video processing device, comprising:
存储器;以及storage; and
耦合到所属存储器的处理器,所述处理器被配置为基于存储在所述存储器中的指令,执行如上述第一方面所述的视频处理方法。A processor coupled to the associated memory, the processor configured to execute the video processing method as described in the first aspect above based on instructions stored in the memory.
根据本公开的第六方面,提供一种视频处理设备,包括:According to a sixth aspect of the present disclosure, there is provided a video processing device, comprising:
存储器;以及storage; and
耦合到所属存储器的处理器,所述处理器被配置为基于存储在所述存储器中的指令,执行如上述第二方面所述的视频处理方法。A processor coupled to the associated memory, the processor configured to execute the video processing method as described in the second aspect above based on instructions stored in the memory.
根据本公开的第七方面,提供一种计算机存储介质,用于存储程序代码,所述程序代码用于执行如上述第一方面所述的方法。According to a seventh aspect of the present disclosure, there is provided a computer storage medium for storing program codes, and the program codes are used to execute the method described in the first aspect above.
根据本公开的第八方面,提供一种计算机存储介质,用于存储程序代码,所述程序代码用于执行如上述第二方面所述的方法。According to an eighth aspect of the present disclosure, there is provided a computer storage medium for storing program codes, and the program codes are used to execute the method as described in the second aspect above.
附图说明Description of drawings
为了更清楚地说明本公开实施例的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings that need to be used in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some of the present disclosure. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.
图1是应用本公开实施例的技术方案的架构图;FIG. 1 is a structural diagram of a technical solution applying an embodiment of the present disclosure;
图2是本公开实施例中的视频编码过程的示意图;FIG. 2 is a schematic diagram of a video encoding process in an embodiment of the present disclosure;
图3是根据本公开实施例的视频处理方法的示意性流程图;3 is a schematic flowchart of a video processing method according to an embodiment of the present disclosure;
图4是本公开实施例中图像块的示意图;Fig. 4 is a schematic diagram of an image block in an embodiment of the present disclosure;
图5是本公开实施例中空域相邻块与第一图像块关系的示意图;Fig. 5 is a schematic diagram of the relationship between spatial adjacent blocks and the first image block in an embodiment of the present disclosure;
图6A和图6B是存储单元的示意图;6A and 6B are schematic diagrams of memory cells;
图7是本公开实施例中存储单元的示意图;7 is a schematic diagram of a storage unit in an embodiment of the present disclosure;
图8是本公开实施例中存储单元尺寸大于图像块尺寸的示意图;Fig. 8 is a schematic diagram of a storage unit size larger than an image block size in an embodiment of the disclosure;
图9是本公开一个实施例中存储多个运动信息的示意图;Fig. 9 is a schematic diagram of storing a plurality of motion information in an embodiment of the present disclosure;
图10是本公开实施例中对运动信息进行应用的示意图;Fig. 10 is a schematic diagram of applying motion information in an embodiment of the present disclosure;
图11是根据本公开实施例的又一种视频处理方法的示意性流程图。Fig. 11 is a schematic flowchart of another video processing method according to an embodiment of the present disclosure.
图12是根据本公开实施例的视频处理装置的示意性框图。Fig. 12 is a schematic block diagram of a video processing device according to an embodiment of the present disclosure.
图13是根据本公开实施例的视频处理装置的示意性框图。FIG. 13 is a schematic block diagram of a video processing device according to an embodiment of the present disclosure.
图14是根据本公开实施例的视频处理设备的示意性框图。FIG. 14 is a schematic block diagram of a video processing device according to an embodiment of the present disclosure.
具体实施方式Detailed ways
下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行描述,显然,所描述的实施例是本公开一部分实施例,而不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。The technical solutions in the embodiments of the present disclosure will be described below with reference to the drawings in the embodiments of the present disclosure. Apparently, the described embodiments are part of the embodiments of the present disclosure, but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.
除非另有说明,本公开实施例所使用的所有技术和科学术语与本公开的技术领域的技术人员通常理解的含义相同。本公开中所使用的术语只是为了描述具体的实施例的目的,不是旨在限制本公开的范围。Unless otherwise specified, all technical and scientific terms used in the embodiments of the present disclosure have the same meaning as commonly understood by those skilled in the art of the present disclosure. The terms used in the present disclosure are for the purpose of describing specific embodiments only, and are not intended to limit the scope of the present disclosure.
图1是应用本公开实施例的技术方案的架构图。FIG. 1 is a structural diagram of a technical solution applying an embodiment of the present disclosure.
如图1所示,系统100可以接收待处理数据102,对待处理数据102进行处理,产生处理后的数据108。例如,系统100可以接收待编码数据,对待编码数据进行编码以产生编码后的数据,或者,系统100可以接收待解码数据,对待解码数据进行解码以产生解码后的数据。在一些实施例中,系统100中的部件可以由一个或多个处理器实现,该处理器可以是计算设备中的处理器,也可以是移动设备(例如无人机)中的处理器。该处理器可以为任意种类的处理器,本发明实施例对此不做限定。在一些可能的设计中,该处理器可以包括编码器、解码器或编解码器等。系统100中还可以包括一个或多个存储器。该存储器可用于存储指令和数据,例如,实现本发明实施例的技术方案的计算机可执行指令、待处理数据102、处理后的数据108等。该存储器可以为任意种类的存储器,本发明实施例对此也不做限定。As shown in FIG. 1 , the
待编码数据可以包括文本、图像、图形对象、动画序列、音频、视频、或者任何需要编码的其他数据。在一些情况下,待编码数据可以包括来自传感器的传感数据,该传感器可以为视觉传感器(例如,相机、红外传感器),麦克风、近场传感器(例如,超声波传感器、雷达)、位置传感器、温度传感器、触摸传感器等。在一些情况下,待编码数据可以包括来自用户的信息,例如,生物信息,该生物信息可以包括面部特征、指纹扫描、视网膜扫描、嗓音记录、DNA采样等。Data to be encoded may include text, images, graphic objects, animation sequences, audio, video, or any other data that requires encoding. In some cases, the data to be encoded may include sensory data from sensors such as vision sensors (e.g., cameras, infrared sensors), microphones, near-field sensors (e.g., ultrasonic sensors, radar), position sensors, temperature sensors, touch sensors, etc. In some cases, the data to be encoded may include information from the user, for example, biometric information, which may include facial features, fingerprint scans, retinal scans, voice recordings, DNA samples, and the like.
图2是根据本公开实施例的一种编码器的框架图。以下将结合图2分别介绍帧间编码和帧内编码的流程。Fig. 2 is a block diagram of an encoder according to an embodiment of the disclosure. The processes of inter-frame encoding and intra-frame encoding will be introduced respectively below in conjunction with FIG. 2 .
如图2所示,帧间编码和解码的流程可以如下所示:As shown in Figure 2, the flow of inter-frame encoding and decoding can be as follows:
在201中,获取当前帧图像。在202中,获取参考帧图像。在203a中,利用参考帧图像,进行运动估计,以得到当前帧图像的各个图像块的运动矢量(Motion Vector,MV)。在204a中,利用运动估计得到的运动矢量,进行运动补偿,以得到当前图像块的估计值。在205中,将当前图像块的估计值与当前图像块相减,得到残差。在206中,对残差进行变换,以得到变换系数。在207中,变换系数经量化可得到量化后的系数。在208中,将量化后的系数进行熵编码,最后将熵编码得到的比特流及进行编码后的编码模式信息进行存储或发送到解码端。在209中,对量化的结果进行反量化。在210中,对反量化结果进行反变换。在211中,利用反变换结果以及运动补偿结果,得到重建像素。在212中,对重建像素进行滤波。在213中,输出滤波后的重建像素。In 201, a current frame image is acquired. In 202, a reference frame image is acquired. In 203a, motion estimation is performed using the reference frame image to obtain a motion vector (Motion Vector, MV) of each image block of the current frame image. In 204a, motion compensation is performed using the motion vector obtained by motion estimation to obtain an estimated value of the current image block. In 205, the estimated value of the current image block is subtracted from the current image block to obtain a residual. In 206, the residual is transformed to obtain transform coefficients. In 207, the transform coefficients are quantized to obtain quantized coefficients. In 208, entropy encoding is performed on the quantized coefficients, and finally the bit stream obtained by entropy encoding and the encoded encoding mode information are stored or sent to the decoding end. In 209, inverse quantization is performed on the quantized result. In 210, inverse transform is performed on the inverse quantization result. In 211, the reconstructed pixels are obtained by using the inverse transformation result and the motion compensation result. At 212, the reconstructed pixels are filtered. In 213, the filtered reconstructed pixels are output.
如图2所示,帧内编码和解码的流程可以如下所示:As shown in Figure 2, the flow of intra-frame encoding and decoding can be as follows:
在202中,获取当前帧图像。在203b中,对当前帧图像进行帧内预测选择。在204b中,当前帧中的当前图像块进行帧内预测。在205中,将当前图像块的估计值与当前图像块相减,得到残差。在206中,对图像块的残差进行变换,以得到变换系数。在207中,变换系数经量化可得到量化后的系数。在208中,将量化后的系数进行熵编码,最后将熵编码得到的比特流及进行编码后的编码模式信进行存储或发送到解码端。在209中,对量化结果进行反量化。在210中,对反量化结果进行反变换,在211中,利用反变换结果以及帧内预测结果,得到重建像素。In 202, the current frame image is acquired. In 203b, intra-frame prediction selection is performed on the current frame image. In 204b, intra-frame prediction is performed on the current image block in the current frame. In 205, the estimated value of the current image block is subtracted from the current image block to obtain a residual. In 206, the residual of the image block is transformed to obtain transform coefficients. In 207, the transform coefficients are quantized to obtain quantized coefficients. In 208, entropy encoding is performed on the quantized coefficients, and finally the bit stream obtained by entropy encoding and the encoded encoding mode information are stored or sent to the decoding end. In 209, inverse quantization is performed on the quantization result. In 210, perform inverse transformation on the inverse quantization result, and in 211, use the inverse transformation result and the intra prediction result to obtain reconstructed pixels.
如图2所示,在编码过程中,为了去除冗余,可以对图像进行预测。视频中不同的图像可采用不同的预测方式。根据图像所采用的预测方式,可以将图像区分为帧内预测图像和帧间预测图像。帧间预测模式可以包括AMVP模式和Merge模式。As shown in FIG. 2 , during the encoding process, in order to remove redundancy, the image may be predicted. Different images in the video can be predicted in different ways. According to the prediction mode adopted by the image, the image can be divided into an intra-frame prediction image and an inter-frame prediction image. Inter prediction modes may include AMVP mode and Merge mode.
对于AMVP模式而言,可以先确定运动矢量预测(motion vector prediction,MVP),在得到MVP之后,可以根据MVP确定运动估计的起始点,在起始点附近,进行运动搜索,搜索完毕之后得到最优的MV,由MV确定参考块在参考图像中的位置,参考块减去当前块得到残差块,MV减去MVP得到运动矢量差值(Motion Vector Difference,MVD),并将该MVD通过码流传输给解码端。For the AMVP mode, the motion vector prediction (MVP) can be determined first. After the MVP is obtained, the starting point of the motion estimation can be determined according to the MVP. Motion search is performed near the starting point. After the search is completed, the optimal MV, the position of the reference block in the reference image is determined by the MV, the reference block is subtracted from the current block to obtain the residual block, the MV is subtracted from the MVP to obtain the motion vector difference (Motion Vector Difference, MVD), and the MVD is passed through the code stream transmitted to the decoder.
对于Merge模式而言,可以先确定MVP,并直接将MVP确定为MV,其中,为了得到MVP,可以先构建一个MVP候选列表(merge candidate list),在MVP候选列表中,可以包括至少一个候选MVP,每个候选MVP可以对应有一个索引,编码端在从MVP候选列表中选择MVP之后,可以将该MVP索引写入到码流中,则解码端可以按照该索引从MVP候选列表中找到该索引对应的MVP,以实现对图像块的解码。For the Merge mode, the MVP can be determined first, and the MVP can be directly determined as the MV, wherein, in order to obtain the MVP, an MVP candidate list (merge candidate list) can be constructed first, and at least one candidate MVP can be included in the MVP candidate list , each candidate MVP can have an index corresponding to it. After selecting an MVP from the MVP candidate list, the encoder can write the MVP index into the code stream, and the decoder can find the index from the MVP candidate list according to the index The corresponding MVP is used to realize the decoding of image blocks.
为了更加清楚地理解Merge模式,以下将介绍采用Merge模式进行编码的操作流程。In order to understand the Merge mode more clearly, the following will introduce the operation process of encoding in the Merge mode.
步骤一、获取MVP候选列表;
步骤二、从MVP候选列表中选出最优的一个MVP,同时得到该MVP在MVP候选列表中的索引;Step 2, select an optimal MVP from the MVP candidate list, and simultaneously obtain the index of the MVP in the MVP candidate list;
步骤三、把该MVP作为当前块的MV;Step 3, use the MVP as the MV of the current block;
步骤四、根据MV确定参考块(也可以称为预测块)在参考帧图像中的位置;Step 4, determine the position of the reference block (also referred to as the prediction block) in the reference frame image according to the MV;
步骤五、参考块减去当前块得到残差数据;Step 5, subtracting the current block from the reference block to obtain the residual data;
步骤六、把残差数据和MVP的索引传给解码端。Step 6: Send the residual data and the index of the MVP to the decoder.
应理解,以上流程只是Merge模式的一种具体实现方式。Merge模式还可以具有其他的实现方式。It should be understood that the above process is only a specific implementation of the Merge mode. The Merge pattern can also have other implementations.
例如,Skip模式是Merge模式的一种特例。按照Merge模式得到MV之后,如果编码端确定当前块和参考块基本一样,那么不需要传输残差数据,只需要传递MV的索引,以及进一步地可以传递一个标志,该标志可以表明当前块可以直接从参考块得到。For example, Skip mode is a special case of Merge mode. After the MV is obtained according to the Merge mode, if the encoder determines that the current block is basically the same as the reference block, then there is no need to transmit the residual data, only the index of the MV, and a flag that can indicate that the current block can be directly Obtained from the reference block.
也就是说,Merge模式特点为:MV=MVP(MVD=0);而Skip模式还多一个特点,即:重构值rec=预测值pred(残差值resi=0)。That is to say, the feature of the Merge mode is: MV=MVP (MVD=0); and the Skip mode has one more feature, namely: the reconstructed value rec=predicted value pred (residual value resi=0).
无论是AMVP模式还是Merge模式,均需要存储各图像块的MV,以便为相邻块提供MVP。由于编码或解码过程均需存储一帧图像中的多个MVP,因此,为了提高编码/解码的效率、降低数据处理量,本公开实施例对MVP的存储方法进行了改进,能够有效减少MVP的存储给硬件带来的存储压力。Regardless of the AMVP mode or the Merge mode, the MV of each image block needs to be stored so as to provide the MVP for adjacent blocks. Since the encoding or decoding process needs to store multiple MVPs in one frame of image, in order to improve the efficiency of encoding/decoding and reduce the amount of data processing, the embodiment of the present disclosure improves the storage method of MVP, which can effectively reduce the MVP Storage pressure on hardware.
图3是根据本公开实施例的视频处理的方法300的示意性流程图。该方法300可以由处理设备实现。该处理设备可以用于编码端或解码端,具体可以为编码器或解码器。参考图3,方法300可以包括:Fig. 3 is a schematic flowchart of a
步骤S301,获取当前帧的第一图像块的运动信息;Step S301, acquiring motion information of the first image block of the current frame;
步骤S302,对应于存储单元存储所述运动信息,所述运动信息用于所述第一图像块的空域相邻块的编码或解码;Step S302, corresponding to the storage unit storing the motion information, the motion information is used for encoding or decoding of spatial adjacent blocks of the first image block;
其中,所述存储单元大小为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。Wherein, the size of the storage unit is M×N, and M and N meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N is greater than the minimum vertical size of all image blocks in the current frame.
在步骤S301,如图4所示,在对图像进行编码时,一帧图像可以被分为多个编码区域(Coding Tree Unit,CTU),每个编码区域被分为多个图像块,也称编码单元(CodingUnit,CU)。在一些实施方式中,例如四叉树形式下,编码区域大小可以是64×64、128×128;图像块大小可以是64×64、32×32、16×16、8×8。可以理解的是,在一些其他的划分形式下,编码区域大小和图像块大小还可以是其他尺寸,例如图像块大小为4×8、8×4、8×16等,此处并不作限制。In step S301, as shown in Figure 4, when encoding an image, a frame of image can be divided into multiple coding areas (Coding Tree Unit, CTU), and each encoding area is divided into multiple image blocks, also called Coding Unit (CodingUnit, CU). In some implementations, for example, in the form of a quadtree, the size of the coding area may be 64×64, 128×128; the size of the image block may be 64×64, 32×32, 16×16, or 8×8. It can be understood that, in some other division forms, the size of the coding area and the size of the image block can also be other sizes, for example, the size of the image block is 4×8, 8×4, 8×16, etc., which is not limited here.
参考对图2、图1的说明,在本公开实施例中,运动信息可以包括一个图像块(CU)对应的运动矢量(MV),或者包括运动矢量和参考帧信息(例如参考帧索引)等。第一图像块的运动信息可以用于第一图像块的空域相邻块的编码或解码。该空域相邻块既包括与所述第一图像块直接相邻的图像块,也包括与所述第一图像块间隔至少一个像素的图像块,本公开对此不作特殊限定。Referring to the descriptions of FIG. 2 and FIG. 1, in the embodiment of the present disclosure, the motion information may include a motion vector (MV) corresponding to an image block (CU), or include a motion vector and reference frame information (such as a reference frame index), etc. . The motion information of the first image block may be used for encoding or decoding of spatial adjacent blocks of the first image block. The spatial adjacent block includes not only an image block directly adjacent to the first image block, but also an image block separated from the first image block by at least one pixel, which is not specifically limited in the present disclosure.
图5是本公开实施例中空域相邻块与第一图像块的关系示意图。Fig. 5 is a schematic diagram of the relationship between spatial adjacent blocks and the first image block in an embodiment of the present disclosure.
参考图5,图5中中间的方形代表当前图像块。该方形仅作示意,不对图像块的尺寸作限制。在一些实施方式中,中间的方形也可以代表当前子图像块。对于编码单元(CU),可以依据预测模式的切割类型将其分割成一个或多个预测单元(Prediction Unit,PU)。此时这里的预测单元(PU)可以为所述子图像块。对于当前图像块或当前子图像块而言,可以将与当前图像块或当前子图像块空域上相邻存储单元的MV作为能够加入到MVP候选列表中的候选MVP。Referring to FIG. 5 , the middle square in FIG. 5 represents the current image block. The square is only for illustration and does not limit the size of the image block. In some implementation manners, the square in the middle may also represent the current sub-image block. For a coding unit (CU), it can be divided into one or more prediction units (Prediction Unit, PU) according to the cutting type of the prediction mode. At this time, the prediction unit (PU) here may be the sub-image block. For the current image block or the current sub-image block, the MVs of the storage units spatially adjacent to the current image block or the current sub-image block can be used as candidate MVPs that can be added to the MVP candidate list.
在一些实施方式中,对于当前图像块或当前子图像块的空域候选列表的构建可以如下:左下角的存储单元是A0,左侧的存储单元是A1,左上角的存储单元是B2,上方的存储单元是B1,右上角是B0,则空域候选列表中作为候选MVP的顺序按照优先级从高到低是A1->B1->B0->A0->B2。In some implementations, the construction of the spatial candidate list for the current image block or the current sub-image block can be as follows: the storage unit in the lower left corner is A0, the storage unit in the left side is A1, the storage unit in the upper left corner is B2, and the storage unit in the upper left corner is A0. The storage unit is B1, and the upper right corner is B0, then the order of MVP candidates in the airspace candidate list is A1->B1->B0->A0->B2 in descending order of priority.
此外,本公开提到的运动信息既可以包括单运动信息,也可以包括双运动信息。其中,双运动信息可以指包括两个单运动信息的运动信息。单运动信息为前向运动信息或后向运动信息,其中,前向运动信息是指对应的参考帧是当前帧的前向帧,后向运动信息是指对应的参考帧是当前帧的后向帧。双运动信息包括的两个单运动信息可以都是前向运动信息,也可以都是后向运动信息,还可以是一个前向运动信息和一个后向运动信息,本公开对此不作具体限定。In addition, the motion information mentioned in this disclosure may include both single motion information and dual motion information. Wherein, dual-motion information may refer to motion information including two single-motion information. The single motion information is forward motion information or backward motion information, wherein the forward motion information means that the corresponding reference frame is the forward frame of the current frame, and the backward motion information means that the corresponding reference frame is the backward frame of the current frame. frame. The two single-motion information included in the dual-motion information may both be forward motion information, may both be backward motion information, or may be one forward motion information and one backward motion information, which is not specifically limited in the present disclosure.
在一些实施例中,一个图像块(CU)仅具有一个子图像块(PU),此时对于该图像块存在一个运动信息。在另一些实施例中,一个图像块包括两个或两个以上的子图像块,则此时每个子图像块均可以对应至少一个运动信息,即步骤S301中获取当前帧的第一图像块的运动信息包括获取当前帧的第一图像块的多个运动信息。In some embodiments, a tile (CU) has only one sub-chunk (PU), at which point there is one motion information for the tile. In some other embodiments, an image block includes two or more sub-image blocks, and each sub-image block can correspond to at least one piece of motion information at this time, that is, the first image block of the current frame obtained in step S301 The motion information includes acquiring multiple pieces of motion information of the first image block of the current frame.
在步骤S302,为了方便为各空域相邻块提供MVP,将一个图像块的MV按照存储单元进行存储。In step S302, in order to conveniently provide MVPs for each spatial adjacent block, the MV of an image block is stored in a storage unit.
图6A和图6B是存储单元的示意图。6A and 6B are schematic diagrams of memory cells.
参考图6A,对于一个尺寸为16×16的第一图像块(CU),可以以4×4为图像单元存储一个运动信息MV0,即对应于CU内部每个以4的倍数为起点和终点的区域存储一个运动信息,总共存储16个运动信息,每个位置存储的MV均为该CU对应的运动信息MV0。Referring to FIG. 6A, for a first image block (CU) with a size of 16×16, a motion information MV0 can be stored in a 4×4 image unit, that is, corresponding to each of the multiples of 4 as the starting point and the ending point in the CU. One motion information is stored in a region, and a total of 16 pieces of motion information are stored, and the MV stored in each location is the motion information MV0 corresponding to the CU.
参考图6B,当第一图像块包括两个子图像块(PU1、PU2)时,每个子图像块均对应至少一个运动信息,例如PU1对应MV1,PU2对应MV2。此时,当第一图像块的尺寸为16×16,以4×4为单元存储一个运动信息时(即存储单元大小为4×4),可以存储8个MV1,8个MV2。Referring to FIG. 6B, when the first image block includes two sub-image blocks (PU1, PU2), each sub-image block corresponds to at least one piece of motion information, for example, PU1 corresponds to MV1, and PU2 corresponds to MV2. At this time, when the size of the first image block is 16×16 and one piece of motion information is stored in units of 4×4 (that is, the storage unit size is 4×4), 8 MV1 and 8 MV2 can be stored.
图7是本公开实施例中存储单元的示意图。FIG. 7 is a schematic diagram of a storage unit in an embodiment of the present disclosure.
参考图7,为了降低数据存储压力,本公开实施例将存储单元大小设置为M×N,并设置M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。Referring to FIG. 7 , in order to reduce data storage pressure, the embodiment of the present disclosure sets the storage unit size to M×N, and sets M and N to meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N Minimum vertical size of all image blocks larger than the current frame.
在图像处理领域,图像块的最小横向尺寸和最小纵向尺寸一般为4,在个别情况下,最小横向尺寸和最小纵向尺寸可以为更大数值。例如,当对当前帧图像进行图像块划分后,得到有4×4、8×8、16×16、32×32各种尺寸的图像块,则当前帧所有图像块的最小横向尺寸和最小纵向尺寸均是4,此时存储单元的大小需要满足其横向尺寸大于4或纵向尺寸大于4。In the field of image processing, the minimum horizontal size and the minimum vertical size of an image block are generally 4, and in some cases, the minimum horizontal size and the minimum vertical size can be larger values. For example, when the current frame image is divided into image blocks to obtain image blocks with various sizes of 4×4, 8×8, 16×16, and 32×32, the minimum horizontal size and minimum vertical size of all image blocks in the current frame The size is 4, at this time, the size of the storage unit needs to satisfy that its horizontal dimension is greater than 4 or its vertical dimension is greater than 4.
在一些实施例中,M和N均为i的正整数倍,i为第一图像块中所有图像块的最小横向尺寸或最小纵向尺寸,在一些实施例中,i为所有图像块的最小横向尺寸或最小纵向尺寸中较小的一者。在本技术领域,最小图像块的尺寸一般为4×8或者8×4。In some embodiments, both M and N are positive integer multiples of i, i is the minimum horizontal size or minimum vertical size of all image blocks in the first image block, and in some embodiments, i is the minimum horizontal size of all image blocks size or the smallest vertical size, whichever is smaller. In this technical field, the size of the smallest image block is generally 4×8 or 8×4.
例如,当最小图像块尺寸为4×8时,i=4,M和N均为4的正整数倍,且M和N中的至少一个大于4。在一些实施例中,存储单元的大小例如可以为4×8、8×4、8×8等。For example, when the smallest image block size is 4×8, i=4, both M and N are positive integer multiples of 4, and at least one of M and N is greater than 4. In some embodiments, the size of the storage unit may be 4×8, 8×4, 8×8, etc., for example.
在图7所示实施例中,第一图像块71横向尺寸为16,纵向尺寸为16,当M和N均小于16时,可以对第一图像块71存储多个运动信息。如果此时第一图像块71为当前帧的最小图像块,4≤M≤16,4≤N≤16,此时,存储单元大小不大于该最小图像块的尺寸,一个存储单元仅对应于一个图像块。In the embodiment shown in FIG. 7 , the horizontal size of the first image block 71 is 16, and the vertical size is 16. When both M and N are less than 16, multiple pieces of motion information can be stored for the first image block 71 . If the first image block 71 is the smallest image block of the current frame at this time, 4≤M≤16, 4≤N≤16, at this time, the size of the storage unit is not greater than the size of the smallest image block, and one storage unit only corresponds to one Image blocks.
在另一些实施例中,如图8所示,存储单元的尺寸(例如图中为8×4)大于最小图像块(例如图中为4×4)的尺寸时,一个存储单元81可以对应两个或多个图像块(例如图中为CU1和CU2)。在本公开实施例中,如果一个存储单元对应两个或多个图像块,则只存储一个图像块的运动信息(例如图中为只存储CU1的运动信息MV1)。在本公开的一个实施例中,对应该存储单元仅存储该存储单元的坐标位置所在的图像块的运动信息。In other embodiments, as shown in FIG. 8, when the size of the storage unit (for example, 8×4 in the figure) is larger than the size of the smallest image block (for example, 4×4 in the figure), one
在一些实施方式中,存储单元所对应存储的运动信息MV的来源的图像块由存储单元的坐标确定。具体地,可以预选为存储单元设定一个固定的坐标,例如为(x,y),则在图像中位于坐标(x,y)处的图像块的运动信息将对应该存储单元进行存储。当一个存储单元对应于两个或多个图像块时,同样可以使用这种选取运动信息来源图像块的方法。例如图8,当存储单元81对应于CU1和CU2,其坐标位于CU1中,则对该存储单元仅存储CU1对应的运动信息。同样的,当存储单元对应于更多的图像块时,仅存储该存储单元的坐标位置所在的图像块的运动信息,对应于该存储单元的其余图像块的运动信息并不进行存储。In some implementations, the source image block of the motion information MV stored in the storage unit is determined by the coordinates of the storage unit. Specifically, a fixed coordinate can be preselected to be set for the storage unit, for example (x, y), and then the motion information of the image block at the coordinate (x, y) in the image will be stored corresponding to the storage unit. When one storage unit corresponds to two or more image blocks, this method of selecting the source image block of the motion information can also be used. For example, in FIG. 8, when the
参考图9,对应于图6B所示情况,也可以对应于第一图像块91的子图像块PU1或PU2的存储单元(4×8)分别存储子图像块的运动信息MV1和MV2。一般而言,同一个图像块中与运动信息的存储相对应的存储单元的尺寸相同,在图9所示实施例中,PU1和PU2的存储单元均为4×8。Referring to FIG. 9 , corresponding to the situation shown in FIG. 6B , the storage unit (4×8) corresponding to the sub-image block PU1 or PU2 of the first image block 91 stores the motion information MV1 and MV2 of the sub-image block respectively. Generally speaking, the storage units corresponding to the storage of motion information in the same image block have the same size. In the embodiment shown in FIG. 9 , the storage units of PU1 and PU2 are both 4×8.
图10是本公开实施例中对运动信息进行应用的示意图。Fig. 10 is a schematic diagram of applying motion information in an embodiment of the present disclosure.
参考图10,当第一图像块CU(尺寸为16×16)的运动信息按照M×N来存储时,在空域候选列表中的多个候选运动信息中选取所述第一图像块的运动信息,每个候选运动信息对应的存储单元大小均为M×N。Referring to FIG. 10, when the motion information of the first image block CU (with a size of 16×16) is stored according to M×N, the motion information of the first image block is selected from a plurality of candidate motion information in the spatial candidate list , the size of the storage unit corresponding to each candidate motion information is M×N.
即,如果第一图像块CU中按照4×8来存储运动信息,则获取图中参考位A0~B2的4×8区域对应的运动信息作为MVP,并在这五个MVP中选取第一图像块CU的运动信息MV,最后按照4×8为存储单元存储第一图像块CU的运动信息MV,为其他空域相邻块提供MVP。That is, if the motion information is stored in the first image block CU according to 4×8, the motion information corresponding to the 4×8 area of the reference bits A0-B2 in the figure is obtained as the MVP, and the first image is selected among the five MVPs The motion information MV of the block CU, and finally store the motion information MV of the first image block CU for the storage unit according to 4×8, and provide the MVP for other spatial adjacent blocks.
为了进一步降低数据存储压力和带宽压力,提高带宽利用率和数据处理效率,在本公开实施例中,改善了空域运动信息的存储方法。In order to further reduce data storage pressure and bandwidth pressure, and improve bandwidth utilization and data processing efficiency, in the embodiments of the present disclosure, a method for storing airspace motion information is improved.
在步骤S302,可以将所述运动信息转换成指数形式表示的运动信息,并将所述指数形式表示的运动信息存储至所述存储单元中。In step S302, the motion information may be converted into motion information expressed in exponential form, and stored in the storage unit.
在一个实施例中,该指数形式例如为指数尾数形式。In one embodiment, the exponential form is, for example, an exponent mantissa form.
例如,可以将运动信息MV表示为MV=a×kb,其中a是尾数,b是指数,k是底数。底数k例如可以为默认值2或10,也可以根据实际情况自行调整,本公开不以此为限。For example, the motion information MV can be expressed as MV=a×k b , where a is the mantissa, b is the exponent, and k is the base. The base k may be, for example, a default value of 2 or 10, and may also be adjusted according to actual conditions, and the present disclosure is not limited thereto.
当用尾数指数形式表示运动信息MV时,可以使用第一预设位数存储尾数a,使用第二预设尾数存储指数b,从而降低数据MV的存储量。在一个实施例中,第一预设位数例如为6bit,第二预设位数例如为4bit,此时,使用10bit即可表示最大为63×215的数值(k=2),读取运动信息时,仅需读取10bit数据并根据第一预设位数、第二预设位数和底数的设置还原MV数值,即可快速读取MV,极大地减少了数据存储量,提高了数据处理效率。When the motion information MV is expressed in the form of a mantissa exponent, the first preset number of digits can be used to store the mantissa a, and the second preset mantissa can be used to store the exponent b, thereby reducing the storage capacity of the data MV. In one embodiment, the first preset number of digits is, for example, 6 bits, and the second preset number of digits is, for example, 4 bits. At this time, using 10 bits can represent a maximum value of 63× 215 (k=2), read For motion information, you only need to read 10bit data and restore the MV value according to the settings of the first preset digit, the second preset digit and the base number, and you can quickly read the MV, which greatly reduces the amount of data storage and improves the Data processing efficiency.
上述实施例仅为一个示例,本领域技术人员可以自行调整第一预设位数、第二预设位数以及尾数,只要第一预设位数与第二预设位数之和小于该运动信息MV按照二进制直接存储时占用的bit数即可。The above-mentioned embodiment is only an example, and those skilled in the art can adjust the first preset digit, the second preset digit and the mantissa by themselves, as long as the sum of the first preset digit and the second preset digit is less than the movement The number of bits occupied when the information MV is directly stored in binary is sufficient.
图11是本公开一个实施例中提供的一种视频处理方法的流程图。Fig. 11 is a flowchart of a video processing method provided in an embodiment of the present disclosure.
参考图11,视频处理方法1100可以包括:Referring to FIG. 11, a
步骤S111,获取当前帧的第一图像块的运动信息;Step S111, acquiring motion information of the first image block of the current frame;
步骤S112,将所述运动信息转换成指数形式表示的运动信息,并对应于存储单元存储所述指数形式表示的运动信息,所述指数形式表示的运动信息用于所述第一图像块的空域相邻块的编码或解码。Step S112, converting the motion information into motion information expressed in exponential form, and storing the motion information expressed in exponential form corresponding to the storage unit, the motion information expressed in exponential form is used for the spatial domain of the first image block Encoding or decoding of adjacent blocks.
其中,空域相邻块既可以包括与所述第一图像块直接相邻的图像块,也可以包括与所述第一图像块间隔至少一个像素的图像块。Wherein, the spatial adjacent block may include an image block directly adjacent to the first image block, or may include an image block separated from the first image block by at least one pixel.
在一个实施例中,步骤S112中的指数形式例如为指数尾数形式。In one embodiment, the form of the exponent in step S112 is, for example, the form of the mantissa of the exponent.
例如,可以将运动信息MV表示为MV=a×kb,其中a是尾数,b是指数,k是底数。底数k例如可以为默认值2或10,也可以根据实际情况自行调整,本公开不以此为限。For example, the motion information MV can be expressed as MV=a×k b , where a is the mantissa, b is the exponent, and k is the base. The base k may be, for example, a default value of 2 or 10, and may also be adjusted according to actual conditions, and the present disclosure is not limited thereto.
当用尾数指数形式表示运动信息MV时,可以使用第一预设位数存储尾数a,使用第二预设尾数存储指数b,从而降低数据MV的存储量。在一个实施例中,第一预设位数例如为6bit,第二预设位数例如为4bit,此时,使用10bit即可表示最大为63×215的数值(k=2),读取运动信息时,仅需读取10bit数据并根据第一预设位数、第二预设位数和底数的设置还原MV数值,即可快速读取MV,极大地减少了数据存储量,提高了数据处理效率。When the motion information MV is expressed in the form of a mantissa exponent, the first preset number of digits can be used to store the mantissa a, and the second preset mantissa can be used to store the exponent b, thereby reducing the storage capacity of the data MV. In one embodiment, the first preset number of digits is, for example, 6 bits, and the second preset number of digits is, for example, 4 bits. At this time, using 10 bits can represent a maximum value of 63× 215 (k=2), read For motion information, you only need to read 10bit data and restore the MV value according to the settings of the first preset digit, the second preset digit and the base number, and you can quickly read the MV, which greatly reduces the amount of data storage and improves the Data processing efficiency.
上述实施例仅为一个示例,本领域技术人员可以自行调整第一预设位数、第二预设位数以及尾数,只要第一预设位数与第二预设位数之和小于该运动信息MV按照二进制直接存储时占用的bit数即可。The above-mentioned embodiment is only an example, and those skilled in the art can adjust the first preset digit, the second preset digit and the mantissa by themselves, as long as the sum of the first preset digit and the second preset digit is less than the movement The number of bits occupied when the information MV is directly stored in binary is sufficient.
使用指数形式存储运动信息可以极大降低数据存储量,进而减轻编码解码过程中的数据处理量,提高数据处理效率。Using the exponential form to store motion information can greatly reduce the amount of data storage, thereby reducing the amount of data processing in the process of encoding and decoding, and improving the efficiency of data processing.
为了进一步降低数据处理量,在步骤S111,还可以对存储单元的尺寸进行调整。在本公开实施例中,可以将存储单元的大小设置为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。In order to further reduce the amount of data processing, in step S111, the size of the storage unit may also be adjusted. In the embodiment of the present disclosure, the size of the storage unit can be set as M×N, and M and N meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N is greater than the minimum horizontal size of all image blocks in the current frame Minimum vertical size.
在一些实施例中,M和N均为i的正整数倍,其中i为所有图像块的最小横向尺寸或最小纵向尺寸。例如,i可以为所有图像块的最小横向尺寸或最小纵向尺寸中较小的一者。In some embodiments, both M and N are positive integer multiples of i, where i is the smallest horizontal size or the smallest vertical size of all image blocks. For example, i may be the smaller of the smallest horizontal size or the smallest vertical size of all image blocks.
参考图4~图10,在一些实施例中,存储单元大小例如可以为4×8、8×4、8×8,本公开对此不作特殊限定。Referring to FIG. 4 to FIG. 10 , in some embodiments, the size of the storage unit may be, for example, 4×8, 8×4, or 8×8, which is not specifically limited in the present disclosure.
当存储单元大小不大于当前帧的最小图像块的尺寸时,一个存储单元对应一个图像块,对应于一个存储单元存储的MV即为一个图像块的MV。When the size of the storage unit is not larger than the size of the smallest image block of the current frame, one storage unit corresponds to one image block, and the MV stored corresponding to one storage unit is the MV of one image block.
当存储单元大小大于当前帧的最小图像块的尺寸时,存储单元可能对应于两个或两个以上图像块,此时,对应于该存储单元,仅存储一个图像块的运动信息。在本公开的一个实施例中,对应该存储单元仅存储该存储单元的坐标位置所在的图像块的运动信息。When the size of the storage unit is larger than the size of the smallest image block of the current frame, the storage unit may correspond to two or more image blocks, and at this time, only the motion information of one image block is stored corresponding to the storage unit. In an embodiment of the present disclosure, the storage unit only stores the motion information of the image block where the coordinate position of the storage unit is located.
扩大存储单元后,从空域候选列表中的多个候选运动信息中选取第一图像块的运动信息时,每个候选运动信息对应的存储单元大小为M×N。After the storage unit is enlarged, when the motion information of the first image block is selected from multiple candidate motion information in the spatial candidate list, the size of the storage unit corresponding to each candidate motion information is M×N.
通过扩大存储单元,可以减少对一个图像块存储的运动信息的数量,进而减少数据处理量。By enlarging the storage unit, the amount of motion information stored for one image block can be reduced, thereby reducing the amount of data processing.
在一些实施例中,第一图像块还可以包括多个子图像块(PU1、PU2、PUn……),每个子图像块的运动信息为至少一个,每个子图像块对应于至少一个存储单元,此时,在步骤S111中,获取当前帧的第一图像块的多个运动信息,在步骤S112中,对应于每个子图像块的存储单元存储该子图像块的运动信息。In some embodiments, the first image block may also include multiple sub-image blocks (PU1, PU2, PUn...), each sub-image block has at least one motion information, and each sub-image block corresponds to at least one storage unit, here When , in step S111, a plurality of pieces of motion information of the first image block of the current frame are acquired, and in step S112, a storage unit corresponding to each sub-image block stores the motion information of the sub-image block.
应理解,该方法1100中各个步骤的实现可以参考上文的描述,为了简洁,在此不再赘述。It should be understood that the implementation of each step in the
图12是根据本公开实施例的视频处理装置1200的示意性框图。该视频处理设备1200包括:FIG. 12 is a schematic block diagram of a
运动信息获取模块1201,用于获取当前帧的第一图像块的运动信息;A motion
运动信息存储模块1202,用于对应于存储单元存储所述运动信息,所述运动信息用于所述第一图像块的空域相邻块的编码或解码;A motion
其中,所述存储单元大小为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。Wherein, the size of the storage unit is M×N, and M and N meet the following conditions: M is greater than the minimum horizontal size of all image blocks in the current frame, and/or, N is greater than the minimum vertical size of all image blocks in the current frame.
在本公开的一种示例性实施例中,所述空域相邻块包括与所述第一图像块直接相邻的图像块。In an exemplary embodiment of the present disclosure, the spatial adjacent blocks include image blocks directly adjacent to the first image block.
在本公开的一种示例性实施例中,所述空域相邻块包括与所述第一图像块间隔至少一个像素的图像块。In an exemplary embodiment of the present disclosure, the spatial adjacent block includes an image block at least one pixel apart from the first image block.
在本公开的一种示例性实施例中,所述M和N均为i的正整数倍,其中i为所述所有图像块的最小横向尺寸或最小纵向尺寸。In an exemplary embodiment of the present disclosure, both M and N are positive integer multiples of i, where i is the smallest horizontal size or the smallest vertical size of all image blocks.
在本公开的一种示例性实施例中,所述i为所述所有图像块的最小横向尺寸或最小纵向尺寸中较小的一者。In an exemplary embodiment of the present disclosure, the i is the smaller one of the smallest horizontal size or the smallest vertical size of all the image blocks.
在本公开的一种示例性实施例中,所述存储单元大小为4×8。In an exemplary embodiment of the present disclosure, the size of the storage unit is 4×8.
在本公开的一种示例性实施例中,所述存储单元大小为8×4。In an exemplary embodiment of the present disclosure, the size of the storage unit is 8×4.
在本公开的一种示例性实施例中,所述存储单元大小为8×8。In an exemplary embodiment of the present disclosure, the size of the storage unit is 8×8.
在本公开的一种示例性实施例中,所述运动信息存储模块1202设置为:In an exemplary embodiment of the present disclosure, the exercise
当所述存储单元对应于多个图像块时,仅对应所述存储单元存储一个图像块的运动信息。When the storage unit corresponds to multiple image blocks, only the motion information of one image block is stored corresponding to the storage unit.
在本公开的一种示例性实施例中,所述运动信息存储模块1202设置为:In an exemplary embodiment of the present disclosure, the exercise
对应所述存储单元仅存储所述存储单元的坐标位置所在的图像块的运动信息。Corresponding to the storage unit, only the motion information of the image block where the coordinate position of the storage unit is stored is stored.
在本公开的一种示例性实施例中,所述运动信息获取模块1201用于获取当前帧的第一图像块的多个运动信息。In an exemplary embodiment of the present disclosure, the motion
在本公开的一种示例性实施例中,所述第一图像块包括多个子图像块,每个所述子图像块的运动信息为至少一个。In an exemplary embodiment of the present disclosure, the first image block includes a plurality of sub-image blocks, and each sub-image block has at least one piece of motion information.
在本公开的一种示例性实施例中,每个所述子图像块对应于至少一个存储单元,所述运动信息存储模块1202还用于对应于所述子图像块的存储单元存储所述子图像块的运动信息。In an exemplary embodiment of the present disclosure, each of the sub-image blocks corresponds to at least one storage unit, and the motion
在本公开的一种示例性实施例中,所述运动信息获取模块用于在空域候选列表中的多个候选运动信息中选取所述第一图像块的运动信息,其中,每个候选运动信息对应的存储单元大小为M×N。In an exemplary embodiment of the present disclosure, the motion information acquisition module is configured to select the motion information of the first image block from a plurality of motion information candidates in the spatial candidate list, wherein each motion information candidate The corresponding storage unit size is M×N.
在本公开的一种示例性实施例中,所述运动信息存储模块用于将所述运动信息转换成指数形式表示的运动信息,并将所述指数形式表示的运动信息存储至所述存储单元中。In an exemplary embodiment of the present disclosure, the motion information storage module is configured to convert the motion information into motion information expressed in exponential form, and store the motion information represented in exponential form into the storage unit middle.
在本公开的一种示例性实施例中,所述指数形式包括尾数指数形式。In an exemplary embodiment of the present disclosure, the exponential form includes a mantissa exponential form.
在本公开的一种示例性实施例中,使用第一预设位数存储所述尾数,使用第二预设位数存储所述指数。In an exemplary embodiment of the present disclosure, a first preset number of bits is used to store the mantissa, and a second preset number of bits is used to store the exponent.
在本公开的一种示例性实施例中,所述第一预设位数为6bit。In an exemplary embodiment of the present disclosure, the first preset number of bits is 6 bits.
在本公开的一种示例性实施例中,所述第二预设位数为4bit。In an exemplary embodiment of the present disclosure, the second preset number of bits is 4 bits.
在本公开的一种示例性实施例中,所述第一预设位数与所述第二预设位数之和小于所述运动信息按照二进制存储时占用的位数。In an exemplary embodiment of the present disclosure, the sum of the first preset number of bits and the second preset number of bits is smaller than the number of bits occupied when the motion information is stored in binary.
应理解,装置1200可以用于实现方法300,为了简洁,在此不再赘述。It should be understood that the
图13是根据本公开实施例的视频处理装置1300的示意性框图。该视频处理装置1300包括:FIG. 13 is a schematic block diagram of a
运动信息获取模块1301,用于获取当前帧的第一图像块的运动信息;A motion
运动信息存储模块1302,用于将所述运动信息转换成指数形式表示的运动信息,并对应于存储单元存储所述指数形式表示的运动信息,所述指数形式表示的运动信息用于所述第一图像块的空域相邻块的编码或解码。A motion
在本公开的一种示例性实施例中,所述空域相邻块包括与所述第一图像块直接相邻的图像块。In an exemplary embodiment of the present disclosure, the spatial adjacent blocks include image blocks directly adjacent to the first image block.
在本公开的一种示例性实施例中,所述空域相邻块包括与所述第一图像块间隔至少一个像素的图像块。In an exemplary embodiment of the present disclosure, the spatial adjacent block includes an image block at least one pixel apart from the first image block.
在本公开的一种示例性实施例中,所述指数形式包括尾数指数形式。In an exemplary embodiment of the present disclosure, the exponential form includes a mantissa exponential form.
在本公开的一种示例性实施例中,使用第一预设位数存储所述尾数,使用第二预设位数存储所述指数。In an exemplary embodiment of the present disclosure, a first preset number of bits is used to store the mantissa, and a second preset number of bits is used to store the exponent.
在本公开的一种示例性实施例中,所述第一预设位数为6bit。In an exemplary embodiment of the present disclosure, the first preset number of bits is 6 bits.
在本公开的一种示例性实施例中,所述第二预设位数为4bit。In an exemplary embodiment of the present disclosure, the second preset number of bits is 4 bits.
在本公开的一种示例性实施例中,所述第一预设位数与所述第二预设位数之和小于所述运动信息按照二进制存储时占用的位数。In an exemplary embodiment of the present disclosure, the sum of the first preset number of bits and the second preset number of bits is smaller than the number of bits occupied when the motion information is stored in binary.
在本公开的一种示例性实施例中,所述存储单元大小为M×N,M、N满足如下条件:M大于当前帧所有图像块的最小横向尺寸,和/或,N大于当前帧所有图像块的最小纵向尺寸。In an exemplary embodiment of the present disclosure, the size of the storage unit is M×N, and M and N meet the following conditions: M is larger than the minimum horizontal size of all image blocks in the current frame, and/or, N is larger than all image blocks in the current frame The minimum vertical size of an image block.
在本公开的一种示例性实施例中,所述M和N均为i的正整数倍,其中i为所述所有图像块的最小横向尺寸或最小纵向尺寸。In an exemplary embodiment of the present disclosure, both M and N are positive integer multiples of i, where i is the smallest horizontal size or the smallest vertical size of all image blocks.
在本公开的一种示例性实施例中,所述i为所述所有图像块的最小横向尺寸或最小纵向尺寸中较小的一者。In an exemplary embodiment of the present disclosure, the i is the smaller one of the smallest horizontal size or the smallest vertical size of all the image blocks.
在本公开的一种示例性实施例中,所述存储单元大小为4×8。In an exemplary embodiment of the present disclosure, the size of the storage unit is 4×8.
在本公开的一种示例性实施例中,所述存储单元大小为8×4。In an exemplary embodiment of the present disclosure, the size of the storage unit is 8×4.
在本公开的一种示例性实施例中,所述存储单元大小为8×8。In an exemplary embodiment of the present disclosure, the size of the storage unit is 8×8.
在本公开的一种示例性实施例中,所述运动信息存储模块1302设置为:In an exemplary embodiment of the present disclosure, the exercise
当所述存储单元对应于多个图像块时,仅对应所述存储单元存储一个图像块的运动信息。When the storage unit corresponds to multiple image blocks, only the motion information of one image block is stored corresponding to the storage unit.
在本公开的一种示例性实施例中,所述运动信息存储模块1302设置为:In an exemplary embodiment of the present disclosure, the exercise
对应所述存储单元仅存储所述存储单元的坐标位置所在的图像块的运动信息。Corresponding to the storage unit, only the motion information of the image block where the coordinate position of the storage unit is stored is stored.
在本公开的一种示例性实施例中,所述运动信息获取模块用于在空域候选列表中的多个候选运动信息中选取所述第一图像块的运动信息,其中,每个候选运动信息对应的存储单元大小为M×N。In an exemplary embodiment of the present disclosure, the motion information acquisition module is configured to select the motion information of the first image block from a plurality of motion information candidates in the spatial candidate list, wherein each motion information candidate The corresponding storage unit size is M×N.
在本公开的一种示例性实施例中,运动信息获取模块用于获取当前帧的第一图像块的多个运动信息。In an exemplary embodiment of the present disclosure, the motion information acquiring module is configured to acquire multiple pieces of motion information of the first image block of the current frame.
在本公开的一种示例性实施例中,所述第一图像块包括多个子图像块,每个所述子图像块的运动信息为至少一个。In an exemplary embodiment of the present disclosure, the first image block includes a plurality of sub-image blocks, and each sub-image block has at least one piece of motion information.
在本公开的一种示例性实施例中,每个所述子图像块对应于至少一个存储单元;所述运动信息存储模块用于对应于所述子图像块的存储单元存储所述子图像块的运动信息。In an exemplary embodiment of the present disclosure, each of the sub-image blocks corresponds to at least one storage unit; the motion information storage module is configured to store the sub-image blocks in the storage unit corresponding to the sub-image blocks sports information.
应理解,装置1300可以用于实现方法1100,为了简洁,在此不再赘述。It should be understood that the
图14示出了本公开实施例的视频处理设备1400的示意性框图。FIG. 14 shows a schematic block diagram of a
如图14所示,该视频处理设备1400可以包括处理器1410,进一步地可以包括存储器1420。As shown in FIG. 14 , the
应理解,该视频处理设备1400还可以包括其他视频处理设备中通常所包括的部件,例如,输入输出设备、通信接口等,本公开实施例对此并不限定。It should be understood that the
存储器1420用于存储计算机可执行指令。The
存储器1420可以是各种种类的存储器,例如可以包括高速随机存取存储器(Random Access Memory,RAM),还可以包括非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器,本公开实施例对此并不限定。The
处理器1410用于访问该存储器1420,并执行该计算机可执行指令,以进行上述本公开实施例的中的视频处理方法300或1100。The
处理器1410可以包括微处理器,现场可编程门阵列(Field-Programmable GateArray,FPGA),中央处理器(Central Processing unit,CPU),图形处理器(GraphicsProcessing Unit,GPU)等,本公开实施例对此并不限定。The
本公开实施例的视频处理设备可对应于本公开实施例的视频处理方法的执行主体,并且视频处理设备中的各个模块的上述和其它操作和/或功能分别为了实现前述各个方法的相应流程,为了简洁,在此不再赘述。The video processing device in the embodiment of the present disclosure may correspond to the execution subject of the video processing method in the embodiment of the present disclosure, and the above-mentioned and other operations and/or functions of each module in the video processing device are to realize the corresponding processes of the foregoing methods, For the sake of brevity, details are not repeated here.
本公开实施例还提供了一种电子设备,该电子设备可以包括上述本公开各种实施例的用于视频处理的设备。An embodiment of the present disclosure further provides an electronic device, and the electronic device may include the above-mentioned device for video processing in various embodiments of the present disclosure.
本公开实施例还提供了一种计算机存储介质,该计算机存储介质中存储有程序代码,该程序代码可以用于指示执行上述本公开实施例的视频处理方法300或1100。The embodiment of the present disclosure also provides a computer storage medium, in which program code is stored, and the program code may be used to instruct the execution of the
应理解,在本公开实施例中,术语“和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系。例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。It should be understood that, in the embodiments of the present disclosure, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. For example, A and/or B may mean that A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本公开的范围。Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functions using different methods for each particular application, but such implementation should not be considered as exceeding the scope of the present disclosure.
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.
在本公开所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接,也可以是电的,机械的或其它的形式连接。In the several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本公开实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solutions of the embodiments of the present disclosure.
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对现有技术做出贡献的部分,或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-OnlyMemory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium In the above, several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc and other media that can store program codes.
以上所述,仅为本公开的具体实施方式,但本公开的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本公开揭露的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本公开的保护范围之内。因此,本公开的保护范围应以权利要求的保护范围为准。The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the technical scope of the present disclosure. Modifications or replacements should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.
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