CN107093204A - It is a kind of that the method for virtual objects effect of shadow is influenceed based on panorama - Google Patents
It is a kind of that the method for virtual objects effect of shadow is influenceed based on panorama Download PDFInfo
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- CN107093204A CN107093204A CN201710243732.7A CN201710243732A CN107093204A CN 107093204 A CN107093204 A CN 107093204A CN 201710243732 A CN201710243732 A CN 201710243732A CN 107093204 A CN107093204 A CN 107093204A
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- panorama
- virtual objects
- shadow
- effect
- diffusing reflection
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/50—Lighting effects
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2215/00—Indexing scheme for image rendering
- G06T2215/16—Using real world measurements to influence rendering
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Abstract
It is a kind of that the method for virtual objects effect of shadow, including step are influenceed based on panorama：Obtain the panorama of current scene；The surrounding environment generated with panorama, mirror-reflection is carried out on virtual objects surface；Diffusing reflection environment map is generated according to panorama；It is that virtual objects generate the photograph that diffuses by diffusing reflection environment map；It is virtual objects generation final effect figure according to mirror-reflection and diffusing reflection effect.The present invention's influences the method for virtual objects effect of shadow based on panorama, according to the prompting taken pictures, assigned direction is taken pictures, multiple pictures based on photographing device multi-angled shooting, panorama is generated, shadow information is extracted from panorama, removes to influence the shadow expression effect in virtual picture, virtual picture is allowed to be influenceed by the shadow in real world, so as to obtain truer, more rich Product Experience.
Description
Technical field
It is more particularly to a kind of that virtual objects shadow is influenceed based on panorama the present invention relates to technical field of image processing
The method of effect.
Background technology
In current virtual product disclosed on the market, the Scenario Design such as shadow color is an important element, in order to more
Experience of reality is approached, product vendor carries out related processing using design software, to reach effect true to nature, but due to all
It is the scene that system is fixed, its shadow color effect is the parameter set, thus with significant limitation.Working as
In the modern epoch for increasingly pursuing true effect, more personal actual experience can not be brought to user.
It is therefore proposed a kind of influence the method for virtual objects effect of shadow based on panorama, can be in real world
Shadow color and other effects project in virtual system, to meet the demand of user, as urgent problem to be solved.
The content of the invention
In order to solve the deficiency of prior art presence, influence empty based on panorama it is an object of the invention to provide one kind
Intend the method for object effect of shadow, virtual objects can be allowed to be influenceed by real world shadow, and the shadow in real world
It can produce interactive.
To achieve the above object, what the present invention was provided influences the method for virtual objects effect of shadow, bag based on panorama
Include following steps：
（1）Obtain the panorama of current scene；（2）The surrounding environment generated with panorama, is carried out on virtual objects surface
Mirror-reflection；（3）Diffusing reflection environment map is generated according to panorama；（4）It is that virtual objects generation is unrestrained by diffusing reflection environment map
Reflected light is shone；（5）It is virtual objects generation final effect figure according to mirror-reflection and diffusing reflection effect.
The step（1）Further comprise：（11）By photographing device, the shooting of different angles is carried out to surrounding environment；
（12）Panorama is generated by all photographic intelligences of shooting.
The step（2）Further comprise：（21）Direction of visual lines v and virtual objects surface arbitrfary point P according to the observation
Normal direction n, calculate incident light direction r；（22）Obtain the illumination letter that incident beam is reflexed at point P in observer's eye
Breath.
The step（22）Further comprise：According to the smooth degree g at point P, the minute surface environment for corresponding resolution of sampling
Reflectogram, obtains the reflective information of correspondence readability.
Further, the step（3）For：All pixels in read group total panorama, for the void that normal direction is n
Intend the arbitrfary point P of subject surface illumination result.
Further, step（3）Described in diffusing reflection environment map, for being stored in panorama each arbitrfary point P,
The intensity and color of the photograph that diffuses for the surrounding environment transmitting that all directions can be received.
Further, step（3）Described in diffusing reflection environment map, with cube or ball it is humorous preserve.
Further, the step（4）For：According to virtual objects surface arbitrfary point P normal direction n, from diffusing reflection ring
Normal direction n Lighting information is obtained in the figure of border.
The present invention's influences the method for virtual objects effect of shadow based on panorama, according to the prompting taken pictures, to specifying
Direction is taken pictures, based on the multiple pictures of photographing device multi-angled shooting, is generated panorama, is extracted from panorama
Shadow information, removes to influence the shadow expression effect in virtual picture, allows virtual picture to be influenceed by the shadow in real world,
So as to obtain truer, more rich Product Experience.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, and with the present invention's
Embodiment together, for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is that the method flow diagram of virtual objects effect of shadow is influenceed based on panorama according to the present invention；
Fig. 2 is a photo in the multiple pictures according to the shooting of the present invention；
Fig. 3 is the cube of the panorama according to the present invention；
Fig. 4 is the schematic diagram for calculating the incident light direction r in virtual objects surface according to the present invention；
Fig. 5 is the schematic diagram of the calculating virtual objects surface specular reflections light according to the present invention；
Fig. 6 is the mirror-reflection comparison diagram of the different degree of roughness according to the present invention；
Fig. 7 is the schematic diagram of the directive illumination sum received according to the calculating virtual objects surface of the present invention；
Fig. 8 is the diffusing reflection environment cube of the generation according to the present invention；
Fig. 9 is to be diffused to shine design sketch according to the virtual objects of the present invention；
Figure 10 is the flow chart of the lighting effect of the influence virtual objects statue model according to the present invention.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that preferred reality described herein
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 1 is that the method flow diagram of virtual objects effect of shadow is influenceed based on panorama according to the present invention, below will
With reference to Fig. 1, the method for virtual objects effect of shadow is influenceed to be described in detail based on panorama the present invention.
In step 101, provide and take pictures into after system, in system（Manually or automatically take pictures）Function, enters to surrounding environment
The different angles of row（The all angles of current scene are covered as far as possible）Shooting；Or uploading pictures function is provided, worked as
One group of photo of preceding scene.Fig. 2 is a photo in the multiple pictures according to the shooting of the present invention.
In step 102, panorama is generated according to all photographic intelligences of shooting；
Fig. 3 is the cube of the panorama according to the present invention（CubeMap）.As shown in figure 3, according to multiple photographs of shooting
Piece, generates panorama textures.
In step 103, the surrounding environment generated with panorama carries out mirror-reflection on virtual objects surface
（specular reflection）.
The concrete scheme of mirror-reflection is：
（1）Direction of visual lines v and virtual objects surface arbitrfary point P normal direction n according to the observation, calculate incident light side
To r；Fig. 4 is the schematic diagram for calculating the incident light direction r in virtual objects surface according to the present invention.
Incident light direction r calculation formula is：R=v-2*n*dot (v, n)
Wherein, * represents the multiplication of scalar sum vector, and dot (v, n) represents direction of visual lines vector v and normal line vector n dot product.
（2）Obtain the Lighting information that incident beam is reflexed at point P in observer's eye.
Fig. 5 is the schematic diagram of the calculating virtual objects surface specular reflections light according to the present invention.Point P smooth degree g determines
The thickness of irradiating light beam is incorporated into, the incident beam of more smooth surface is thinner, and reflective information is more clear.According to the smooth degree at point P
G, corresponding resolution of sampling（Precision）Minute surface Ambient figure, obtain correspondence readability reflective information.
The smooth surface of sampling, obtains high-resolution minute surface Ambient figure, obtains apparent reflective information.
Fig. 6 is the mirror-reflection comparison diagram of the different degree of roughness according to the present invention.As shown in fig. 6, the model of the leftmost side
Material it is most smooth（G is maximum）, the material for the model turned right is more and more coarse（G is less and less）, from fig. 6 it can be seen that more
Smooth material mirror-reflection is more clear.
In step 104, diffusing reflection environment map is generated according to panorama；
Generation diffusing reflection environment map concrete scheme be：All pixels in read group total panorama, are n's for normal direction
The arbitrfary point P on virtual objects surface illumination result.Fig. 7 is according to owning that the calculating virtual objects surface of the present invention is received
The schematic diagram of the illumination sum in direction.
Specifically, to arbitrfary point P of the normal direction for n virtual objects surface, all directions are calculated（That is any direction
d）Incident light it is as follows in the formula of point P Lighting information sum：
E=∑Ed* max (0, dot (d, n))
Wherein, E is Lighting information and EdIt is any direction d incident light, max is the function for seeking two number maximums, dot (d,
N) it is the result of asking incident light vector d and normal line vector n dot products.
Diffusing reflection environment map, for being stored in panorama each arbitrfary point P, the week that can be received in all directions
The intensity and color of the photograph that diffuses of collarette border transmitting.
Diffusing reflection environment map can use cube（CubeMap）Or ball is humorous（Spherical harmonics）Preserve,
Fig. 8 is the diffusing reflection environment cube of the generation according to the present invention.
In the step, when obtaining diffusing reflection environment map, only a kind of resolution ratio, it is not necessary to according to smooth degree g samplings not
With the textures of resolution ratio.
It is that virtual objects generate the photograph that diffuses by diffusing reflection environment map in step 105；
The diffuse concrete scheme of photograph of generation is：According to virtual objects surface arbitrfary point P normal direction n, from diffusing reflection ring
Normal direction n Lighting information is obtained in the figure of border.Fig. 9 is to be diffused to shine design sketch according to the virtual objects of the present invention.
It is virtual objects generation final effect figure according to mirror-reflection and diffusing reflection effect in step 106.
The present invention's influences the method for virtual objects effect of shadow based on panorama, and ambient light is obtained by capture apparatus
The truth of shadow, so as to influence the shadow in virtual system to show.
Figure 10 is the flow chart of the lighting effect of the influence virtual objects statue model according to the present invention, with reference to figure
10, the operation principle of the present invention is expanded on further.
First, obtaining includes Figure 10（a）One group of photo of current scene inside；
Secondly, by one group of photo of current scene, generation such as Figure 10（b）Shown panorama；
Again, panorama Figure 10 is passed through（b）, the lighting effect of virtual objects statue model is handled, generation such as Figure 10
（c）Shown mirror reflection effect figure；In the step, panorama is directly used as minute surface Ambient figure.
Again, by panorama Figure 10（b）, generation such as Figure 10（d）Shown diffusing reflection Environment, and pass through diffusing reflection
Environment Figure 10（d）, the lighting effect of virtual objects statue model is handled, generation such as Figure 10（e）Shown is unrestrained anti-
Penetrate design sketch；
Finally, mirror reflection effect figure Figure 10 is passed through（c）And diffusing reflection design sketch Figure 10（c）, generation such as Figure 10（f）It is shown most
Whole design sketch.
The present invention's influences the method for virtual objects effect of shadow based on panorama, according to the prompting taken pictures, to specifying
Direction is taken pictures, based on the multiple pictures of photographing device multi-angled shooting, is generated panorama, is extracted from panorama
Shadow information, removes to influence the shadow expression effect in virtual picture, allows virtual picture to be influenceed by the shadow in real world,
So as to obtain truer, more rich Product Experience.
One of ordinary skill in the art will appreciate that：It the foregoing is only the preferred embodiments of the present invention, and without
In the limitation present invention, although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still be modified to the technical scheme that foregoing embodiments are recorded, or which part technical characteristic is entered
Row equivalent substitution.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., all should be included
Within protection scope of the present invention.
Claims (8)
1. a kind of influence the method for virtual objects effect of shadow based on panorama, it is characterised in that comprises the following steps：
（1）Obtain the panorama of current scene；
（2）The surrounding environment generated with panorama, mirror-reflection is carried out on virtual objects surface；
（3）Diffusing reflection environment map is generated according to panorama；
（4）It is that virtual objects generate the photograph that diffuses by diffusing reflection environment map；
（5）It is virtual objects generation final effect figure according to mirror-reflection and diffusing reflection effect.
2. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 1, it is characterised in that described
Step（1）Further comprise：
（11）By photographing device, the shooting of different angles is carried out to surrounding environment；
（12）Panorama is generated by all photographic intelligences of shooting.
3. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 1, it is characterised in that described
Step（2）Further comprise：
（21）Direction of visual lines v and virtual objects surface arbitrfary point P normal direction n according to the observation, calculate incident light direction
r；
（22）Obtain the Lighting information that incident beam is reflexed at point P in observer's eye.
4. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 3, it is characterised in that described
Step（22）Further comprise：
According to the smooth degree g at point P, the minute surface Ambient figure for corresponding resolution of sampling obtains the anti-of correspondence readability
Penetrate information.
5. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 1, it is characterised in that described
Step（3）For：
All pixels in read group total panorama, for illumination knot of the normal direction for the arbitrfary point P on n virtual objects surface
Really.
6. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 1, it is characterised in that step
（3）Described in diffusing reflection environment map, for being stored in panorama each arbitrfary point P, can be received in all directions
The intensity and color of the photograph that diffuses of surrounding environment transmitting.
7. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 1, it is characterised in that step
（3）Described in diffusing reflection environment map, with cube or ball it is humorous preserve.
8. the method for virtual objects effect of shadow is influenceed based on panorama according to claim 1, it is characterised in that described
Step（4）For：
According to virtual objects surface arbitrfary point P normal direction n, normal direction n illumination letter is obtained in diffusing reflection environment map
Breath.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107633549A (en) * | 2017-10-13 | 2018-01-26 | 苏州蜗牛数字科技股份有限公司 | A kind of real-time rendering method and device based on ambient lighting probe |
| CN107854840A (en) * | 2017-12-06 | 2018-03-30 | 北京像素软件科技股份有限公司 | Eyes analogy method and device |
| CN110070621A (en) * | 2018-01-19 | 2019-07-30 | 宏达国际电子股份有限公司 | Electronic device, the method and computer readable media for showing augmented reality scene |
| CN110166760A (en) * | 2019-05-27 | 2019-08-23 | 浙江开奇科技有限公司 | Image treatment method and terminal device based on panoramic video image |
| CN112492230A (en) * | 2020-11-26 | 2021-03-12 | 北京字跳网络技术有限公司 | Video processing method and device, readable medium and electronic equipment |
| CN114026831A (en) * | 2019-06-28 | 2022-02-08 | 斯纳普公司 | 3D object camera customization system |
| US11620791B2 (en) | 2018-11-27 | 2023-04-04 | Snap Inc. | Rendering 3D captions within real-world environments |
| US11715268B2 (en) | 2018-08-30 | 2023-08-01 | Snap Inc. | Video clip object tracking |
| US11908093B2 (en) | 2019-12-19 | 2024-02-20 | Snap Inc. | 3D captions with semantic graphical elements |
| US12175613B2 (en) | 2019-12-19 | 2024-12-24 | Snap Inc. | 3D captions with face tracking |
| US12217374B2 (en) | 2017-01-09 | 2025-02-04 | Snap Inc. | Surface aware lens |
| WO2025039667A1 (en) * | 2023-08-18 | 2025-02-27 | 腾讯科技（深圳）有限公司 | Picture rendering method and apparatus, device, and storage medium |
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| US12444138B2 (en) | 2024-07-03 | 2025-10-14 | Snap Inc. | Rendering 3D captions within real-world environments |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US12217374B2 (en) | 2017-01-09 | 2025-02-04 | Snap Inc. | Surface aware lens |
| CN107633549B (en) * | 2017-10-13 | 2021-02-09 | 苏州蜗牛数字科技股份有限公司 | Real-time rendering method and device based on ambient illumination probe |
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| US11620791B2 (en) | 2018-11-27 | 2023-04-04 | Snap Inc. | Rendering 3D captions within real-world environments |
| US12106441B2 (en) | 2018-11-27 | 2024-10-01 | Snap Inc. | Rendering 3D captions within real-world environments |
| US12387436B2 (en) | 2018-12-20 | 2025-08-12 | Snap Inc. | Virtual surface modification |
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| CN114026831B (en) * | 2019-06-28 | 2024-03-08 | 斯纳普公司 | 3D object camera customization system, method and machine readable medium |
| US12211159B2 (en) | 2019-06-28 | 2025-01-28 | Snap Inc. | 3D object camera customization system |
| CN114026831A (en) * | 2019-06-28 | 2022-02-08 | 斯纳普公司 | 3D object camera customization system |
| US11908093B2 (en) | 2019-12-19 | 2024-02-20 | Snap Inc. | 3D captions with semantic graphical elements |
| US12175613B2 (en) | 2019-12-19 | 2024-12-24 | Snap Inc. | 3D captions with face tracking |
| US12347045B2 (en) | 2019-12-19 | 2025-07-01 | Snap Inc. | 3D captions with semantic graphical elements |
| CN112492230A (en) * | 2020-11-26 | 2021-03-12 | 北京字跳网络技术有限公司 | Video processing method and device, readable medium and electronic equipment |
| WO2025039667A1 (en) * | 2023-08-18 | 2025-02-27 | 腾讯科技（深圳）有限公司 | Picture rendering method and apparatus, device, and storage medium |
| US12444138B2 (en) | 2024-07-03 | 2025-10-14 | Snap Inc. | Rendering 3D captions within real-world environments |
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