CN105719335B - A kind of map image rendering method, device and car-mounted terminal - Google Patents
A kind of map image rendering method, device and car-mounted terminal Download PDFInfo
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- CN105719335B CN105719335B CN201610099943.3A CN201610099943A CN105719335B CN 105719335 B CN105719335 B CN 105719335B CN 201610099943 A CN201610099943 A CN 201610099943A CN 105719335 B CN105719335 B CN 105719335B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/10—Geometric effects
- G06T15/20—Perspective computation
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Abstract
The embodiment of the invention discloses map image rendering methods, comprising: obtains the color value of source map image, the source map image includes the image of 32 textures；The color value of the source map image is subjected to alpha calculation process, the color value after obtaining operation, and store the color value after the operation；When needing to render the source map image, the color value after calling the operation carries out hybrid operation.The invention also discloses map image rendering device and car-mounted terminals, reduce operand when carrying out map image rendering in the prior art, when in particular for the map image or very high rendering frequency for rendering a large amount of 32 textures, it is greatly improved rendering efficiency, the electric terminal for enabling map image rendering capability poor shows image glibly, solves the problems, such as that being easy to appear map image in the prior art shows Caton.
Description
Technical field
The present invention relates to computer field more particularly to map image rendering methods, device and car-mounted terminal.
Background technique
Rendering is one of the most important research topic in three dimensional computer graphics, and the field of practicing it with it is other
Technology is closely related.In graphics pipeline, rendering is last important step, obtains model by it and finally shows with animation
Show effect.With the continuous complication of computer graphical, rendering also increasingly becomes an important technology.
Image or the application field of figure rendering have very much, for example computer video game, simulation, film or TV are special
Effect and the visual design etc., each application are all comprehensively considering for characteristic and technology.For example, engine map in the prior art
During to map carries out rendering display, the map image for rendering a large amount of 32 textures, including text, interest are generally required
Point icon, customized floating layer etc. need to carry out a large amount of hybrid operation in rendering, and rendering efficiency is not high, is easy to appear ground
The problem of figure image displaying card.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing a kind of map image rendering method, map image
Rendering device and car-mounted terminal, can greatly improve rendering efficiency, and solution is easy to appear map image display card in the prior art
The problem of pausing.
In order to solve the above-mentioned technical problem, first aspect of the embodiment of the present invention discloses a kind of map image rendering method,
Include:
The color value of acquisition source map image, the source map image include the image of 32 textures；
The color value of the source map image is subjected to Alpha alpha calculation process, the color value after obtaining operation, and
Color value after storing the operation；
When needing to render the source map image, the color value after calling the operation carries out hybrid operation.
With reference to first aspect, in the first possible implementation, the color value by the source map image into
Row alpha calculation process, the color value after obtaining operation, comprising:
By the color value of each pixel in the source map image respectively multiplied by respective alpha value, obtain described
Color value after pixel point processing.
With reference to first aspect, in the second possible implementation, the color value after the storage operation, packet
It includes:
Color value after the color value of each pixel in the source map image to be replaced with to the pixel point processing, obtains
To the map image resource for image rendering, and store the map image resource.
The possible implementation of second with reference to first aspect, in the third possible implementation, the calling
Color value after the operation carries out hybrid operation, comprising:
Color value directly after extracting the pixel point processing in the map image resource of storage；
Utilize the alpha value of color value, the pixel after the operation and the face of target map image slices vegetarian refreshments
Color value carries out hybrid operation, obtains the color value of mixed pixel.
Perhaps second of the first possible implementation of first aspect or first aspect with reference to first aspect
The possible implementation of the third of possible implementation or first aspect, in the fourth possible implementation, institute
The source map image of stating includes the image when engine map on car-mounted terminal is rendered.
Second aspect of the embodiment of the present invention discloses a kind of map image rendering device, comprising:
Module is obtained, for obtaining the color value of source map image, the source map image includes the image of 32 textures；
Computing module, for the color value of the source map image to be carried out alpha calculation process, the face after obtaining operation
Color value；
Memory module, for storing the color value after the operation；
Rendering module, for the color value when needing to render the source map image, after calling the operation
Carry out hybrid operation.
In conjunction with second aspect, in the first possible implementation, the computing module is specifically used for, by the source
The color value of each pixel color multiplied by respective alpha value, after obtaining the pixel point processing respectively in figure image
Value.
In conjunction with second aspect, in the second possible implementation, the memory module is specifically used for, by the source
The color value of each pixel replaces with the color value after the pixel point processing in figure image, obtains the ground for image rendering
Figure image resource, and store the map image resource.
In conjunction with second of possible implementation of second aspect, in the third possible implementation, the rendering
Module includes:
Extraction unit, for the color directly after extracting the pixel point processing in the map image resource of storage
Value；
Hybrid operation unit, for the alpha value of color value, the pixel after the utilization operation and target
The color value of figure image slices vegetarian refreshments carries out hybrid operation, obtains the color value of mixed pixel.
The third aspect of the embodiment of the present invention discloses a kind of car-mounted terminal, comprising:
Memory, for storing the corresponding color value of image being used for when engine map is rendered；Described image includes
The image of 32 textures, the corresponding color value of described image are that the original color value of the image has been carried out alpha calculation process
Color value after the operation obtained afterwards；
Processor, for when needing to render described image, calling the described image pair of the memory storage
The color value answered carries out hybrid operation.
Fourth aspect of the embodiment of the present invention discloses a kind of computer storage medium, and the computer storage medium is stored with
Program, described program include the first possible realization side of first aspect of the embodiment of the present invention or first aspect when executing
Formula perhaps first aspect second of possible implementation perhaps the third possible implementation of first aspect or
The Overall Steps of map image rendering method in 4th kind of possible implementation of first aspect.
Implement the embodiment of the present invention, the color value of source map image is obtained before carrying out image rendering, by the source map
The color value of image carries out alpha calculation process, the color value after obtaining operation, and stores the color value after the operation, then
When needing to render the source map image, the color value after calling directly the operation carries out hybrid operation, reduces
Operand when map image rendering is carried out in the prior art, in particular for the map image or wash with watercolours for rendering a large amount of 32 textures
When dye frequency is very high, it is greatly improved rendering efficiency, the electric terminal for enabling map image rendering capability poor is shown glibly
Diagram picture solves the problems, such as that being easy to appear map image in the prior art shows Caton.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram of map image rendering method provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of another embodiment of map image rendering method provided by the invention；
Fig. 3 is the structural schematic diagram of map image rendering device provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of rendering module provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of car-mounted terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is the flow diagram of map image rendering method provided in an embodiment of the present invention referring to Fig. 1, this method can wrap
It includes:
Step S100: the color value of source map image is obtained；
Specifically, the image of 32 textures of source map image in each embodiment of the present invention；By taking map as an example, the source
Figure image may include text, point of interest icon, customized floating layer, some user interfaces (User Interface, UI) button
Etc..The color value of source map image is specially the color value of each pixel in the map image of source, it will be understood that, each
Pixel can include red (R), green (G), blue (B) three color components, three color components (i.e. R value, G value and B value)
The as color value of the pixel.By step S100, it can analyze and obtain the corresponding face of each pixel of source map image
Color value.
Step S102: the color value of the source map image is subjected to alpha calculation process, the color after obtaining operation
Value, and store the color value after the operation；
Specifically, in 32 uncompressed RGB images, each pixel is made of four parts: an Alpha
The channel alpha and three color components (R, G and B), the channel alpha are one 8 gray channels, the 256 grades of ashes in the channel
It spends to record the transparence information in image, transparent, opaque and translucent area is defined, wherein transparent, the white expression of black expression
Opaque, ash indicates translucent.Step S102 can specifically distinguish the color value of each pixel in the source map image
Color value multiplied by respective alpha value, after obtaining the pixel point processing；For example, Rs, Gs, Bs and As respectively indicate certain pixel
Red color component value, green component values, blue color component value and alpha value in point, then Rs × As, Gs × As, Bs × As are
Alpha calculation process is carried out to the pixel, that is to say, that the color value after the pixel point processing is Rs × As, Gs × As, Bs
Then color value after the operation can be stored in local by × As.
Step S104: when needing to render the source map image, the color value after calling the operation is carried out
Hybrid operation.
Specifically, user opens a picture by electric terminal, perhaps sliding browsing graph text information or opening map
During scaling map or dragging map etc. afterwards, require to needing image to be shown to render, then to the source Map
As when being rendered, which mixes the color value after the corresponding operation of source map image for calling storage
Operation.
It should be noted that there are corresponding relationship, Ke Yitong with the source map image for the color value after the operation of the storage
It crosses the modes such as foundation index or map listing and calls the color value after the corresponding operation of source map image.
Preferably, the embodiment of the present invention may include: by the source map image when storing the color value after the operation
In the color value of each pixel replace with the color value after the pixel point processing, obtain the map image for image rendering
Resource, and store the map image resource.
Specifically, source map image is handled, replaces the color value of each pixel in the source map image, replaced
For the color value after the pixel point processing, to form map image resource, and the map image resource is stored；The map image
Resource is used to make hybrid operation when subsequent progress image rendering, which is not image, that is, clicks and open
The map image resource cannot be shown as source map image, or need scheduled decoding algorithm (inverse alpha fortune as escribed above
Calculation processing) it can just be shown as source map image.
Below with reference to Fig. 2 shows map image rendering method provided by the invention another embodiment process signal
Figure, the map image rendering method for embodiment that present invention be described in more detail may include:
Step S200: the color value of source map image is obtained；
Specifically, can be with reference to step S100 in above-mentioned Fig. 1 embodiment, which is not described herein again.
Step S202: it by the color value of each pixel in the source map image respectively multiplied by respective alpha value, obtains
Color value to after the pixel point processing；
Specifically, each pixel is made of four parts: a channel Alpha alpha and three color components
(R, G and B), Rs, Gs, Bs and As respectively indicate red color component value in certain pixel, green component values, blue color component value and
Alpha value, then Rs × As, Gs × As, Bs × As are to carry out alpha calculation process to the pixel, it is assumed that Rs × As=
Rn, Gs × As=Gn, Bs × As=Bn, then the color value after the pixel point processing is Rn, Gn, Bn.
Step S204: the color after the color value of each pixel in the source map image to be replaced with to pixel point processing
Value, obtains the map image resource for image rendering, and store the map image resource；
It specifically, is respectively Rs, Gs and Bs difference by three original color components of the pixel in the source map image
Rn, Gn and Bn are replaced with, map image resource is obtained, which can include Rn, Gn, Bn and alpha value.It can
Understanding, each pixel is carried out aforesaid operations in the source map image, the color value after all replacing with itself operation, from
And obtain the corresponding map image resource of entire source map image.
Step S206: it when needing to render the source map image, is directly provided from the map image of storage
Color value after extracting the pixel point processing in source；
Specifically, user opens a picture by electric terminal, perhaps sliding browsing graph text information or opening map
During scaling map or dragging map etc. afterwards, require to needing image to be shown to render, then to the source Map
As when being rendered, which extracts the required each pixel pair of rendering directly from the map image resource of storage
Color value after the operation answered.
Step S208: the alpha value and target map image slices of color value, the pixel after the operation are utilized
The color value of vegetarian refreshments carries out hybrid operation, obtains the color value of mixed pixel.
Specifically, it is assumed that image rendering is that the source map image is plotted on target map image, the target map figure
The color value of picture is respectively Rd, Gd and Bd, is illustrated with a pixel, then the hybrid operation rendered can be Rn+ (1-
As) × Rd, Gn+ (1-As) × Gd and Bn+ (1-As) × Bd, the value after three operations are respectively the pixel hybrid operation
Color value afterwards.It will be appreciated that each pixel is carried out aforesaid operations in the source map image.
It should be noted that the source map image in each embodiment of the present invention may include that map on car-mounted terminal draws
Hold up image when being rendered.That is, the map image rendering method of the embodiment of the present invention can be applied in car-mounted terminal
On, such as when car-mounted terminal carries out navigation or user and carries out map view by the display screen of car-mounted terminal, car-mounted terminal fortune
Capable engine map can through the embodiment of the present invention in map image rendering method rendered, can greatly improve vehicle-mounted
Terminal shows the efficiency of image, avoids user and display Caton occurs when car-mounted terminal executes dragging or the operation of scaling map
The problem of.
Through the embodiment of the present invention, the map image resource for image rendering can be pre-generated and be stored, is avoided
Alpha calculation process, i.e., the render process of each pixel just are executed to color value original in the map image of source when rendering
Reduce 3 alpha operations for being directed to color value, then when needing to render the image containing many pixels or needing to render very
When multiple images, the operand of rendering can be greatly reduced, improve rendering efficiency, so that the electronics end that image rendering abilities are poor
End can show image glibly, solve the problems, such as to be easy to appear image displaying card in the prior art.
For the ease of better implementing the above scheme of the embodiment of the present invention, the present invention also correspondence provides a kind of Map
As rendering device, the structural schematic diagram of map image rendering device provided in an embodiment of the present invention as shown in Figure 3, map image
Rendering device 30 may include: to obtain module 300, computing module 302, memory module 304 and rendering module 306, wherein
The color value that module 300 is used to obtain source map image is obtained, the source map image includes the figure of 32 textures
Picture；
Computing module 302 is used to the color value of the source map image carrying out alpha calculation process, after obtaining operation
Color value；
Memory module 304 is for storing the color value after the operation；
Rendering module 406 is used for the color when needing to render the source map image, after calling the operation
Value carries out hybrid operation.
Specifically, computing module 302 can be specifically used for, by the color value of each pixel in the source map image
Color value respectively multiplied by respective alpha value, after obtaining the pixel point processing.
Memory module 304 can be specifically used for, and the color value of each pixel in the source map image is replaced with institute
Color value after stating pixel point processing obtains the map image resource for image rendering, and stores the map image resource.
Further, the structural schematic diagram of rendering module provided in an embodiment of the present invention as shown in Figure 4, rendering module
306 may include extraction unit 3060 and hybrid operation unit 3062, wherein
Extraction unit 3060 is used for directly after extracting the pixel point processing in the map image resource of storage
Color value；
Hybrid operation unit 3062 is used for alpha value and mesh using color value, the pixel after the operation
The color value for marking map image pixel carries out hybrid operation, obtains the color value of mixed pixel.
It should be noted that the map image rendering device 30 in the embodiment of the present invention can include but is not limited to personal meter
Calculation machine, car-mounted terminal, mobile intelligent terminal (such as mobile phone), tablet computer, personal digital assistant (Personal Digital
Assistant, PDA), media player, smart television, smartwatch, intelligent glasses, the user equipmenies such as Intelligent bracelet, map
The function of each functional module of image rendering device 30 can be implemented according to the method in above method embodiment, specific real
Existing process is referred to the associated description of above method embodiment, and details are not described herein again.
In addition, referring to Fig. 5, Fig. 5 is the structural schematic diagram of car-mounted terminal provided in an embodiment of the present invention.Wherein, such as Fig. 5
Shown, car-mounted terminal 50 may include: at least one processor 501, such as CPU, at least one network interface 504, Yong Hujie
Mouth 503, memory 505, at least one automobile bus 502 and display screen 506.Wherein, automobile bus 502 is for realizing these
Connection communication between component.Wherein, which may include touch screen.Network interface 504 optionally may include
Standard wireline interface and wireless interface (such as WI-FI interface).Memory 505 can be high speed RAM memory, be also possible to non-
Unstable memory (non-volatile memory), for example, at least a magnetic disk storage, memory 505 include this hair
Flash in bright embodiment.Memory 505 optionally can also be that at least one is located remotely from the storage of aforementioned processor 501
System.As shown in figure 5, as may include operating system, network communication mould in a kind of memory 505 of computer storage medium
Block, Subscriber Interface Module SIM and map image rendering program.
It will be appreciated that car-mounted terminal 50 can also be defeated including other modules, such as audio/video encoding/decoding module, audio-video
Enter output module, speech recognition module etc. functional module, is not limited with the functional module of the car-mounted terminal 50 drawn in Fig. 5
The structure of car-mounted terminal 50.
It is illustrated, deposits so that the car-mounted terminal 50 is installed and has run map application or navigation application program as an example
Reservoir 505 is also stored with the corresponding color value of map image when being rendered for engine map；The map image includes 32
The image of position texture, the corresponding color value of the map image are that the original color value of the map image has been carried out alpha in advance
Color value after the operation obtained after calculation process；The step of preparatory operation, (can specifically join after computer end execution
The embodiment in above method embodiment is examined, which is not described herein again), the color value after the operation is sent to car-mounted terminal 50
Memory 50 in stored.
So when needing to render the map image, processor 501 can be used for calling to be deposited in memory 505
Color value after the map image rendering program of storage and operation carries out hybrid operation.
Specifically, processor 501 directly can extract the pixel from the map image resource that memory 505 stores
Color value after operation；Then the alpha value and target map image pixel of color value, the pixel after the operation are utilized
The color value of point carries out hybrid operation, obtains the color value of mixed pixel.
In conclusion implementing the embodiment of the present invention, the color value of source map image is obtained before carrying out image rendering, it will
The color value of the source map image carries out alpha calculation process, the color value after obtaining operation, and stores the color after the operation
Value, then when needing to render the source map image, the color value after calling directly the operation carries out hybrid operation,
Reduce operand when carrying out map image rendering in the prior art, in particular for the Map for rendering a large amount of 32 textures
When picture or very high rendering frequency, it is greatly improved rendering efficiency, the electric terminal for enabling map image rendering capability poor flows
It freely shows image, solves the problems, such as that being easy to appear map image in the prior art shows Caton.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (4)
1. a kind of map image rendering method characterized by comprising
When not needing to render source map image, the color value of the source map image, the source map are obtained in advance
Image includes the map image of 32 textures；
By the color value of each pixel in the source map image respectively multiplied by respective alpha value, the pixel is obtained
Color value after point processing, and after the color value of each pixel in the source map image is replaced with the pixel point processing
Color value, obtain the map image resource for image rendering, and store the map image resource；
When needing to render the source map image, the picture directly is extracted from the map image resource of storage
Color value after vegetarian refreshments operation；Utilize the alpha value and target map image of color value, the pixel after the operation
The color value of pixel carries out hybrid operation, obtains the color value of mixed pixel；
The hybrid operation includes Rn+ (1-As) × Rd, Gn+ (1-As) × Gd and Bn+ (1-As) × Bd；Wherein Rn, Gn and Bn
For the color value after the operation, As is the alpha value of the pixel, and Rd, Gd and Bd are the target map image pixel
The color value of value.
2. the method as described in claim 1, which is characterized in that the source map image includes the engine map on car-mounted terminal
Map image when being rendered.
3. a kind of map image rendering device characterized by comprising
Module is obtained, for when not needing to render source map image, obtaining the color of the source map image in advance
Value, the source map image includes the map image of 32 textures；
Computing module, for by the color value of each pixel in the source map image respectively multiplied by respective alpha value,
Color value after obtaining the pixel point processing；
Memory module, after the color value of each pixel in the source map image is replaced with the pixel point processing
Color value obtains the map image resource for image rendering, and stores the map image resource；
Rendering module, for when needing to render the source map image, the color value after calling the operation to be carried out
Hybrid operation；
The rendering module includes:
Extraction unit, for the color value directly after extracting the pixel point processing in the map image resource of storage；
Hybrid operation unit, for the alpha value and target map figure using color value, the pixel after the operation
As the color value progress hybrid operation of pixel, the color value of mixed pixel is obtained；
The hybrid operation includes Rn+ (1-As) × Rd, Gn+ (1-As) × Gd and Bn+ (1-As) × Bd；Wherein Rn, Gn and Bn
For the color value after the operation, As is the alpha value of the pixel, and Rd, Gd and Bd are the target map image pixel
The color value of value.
4. a kind of car-mounted terminal characterized by comprising
Memory, for storing the corresponding color value of map image being used for when engine map is rendered；The map image
Map image including 32 textures, the corresponding color value of the map image are not need to carry out wash with watercolours to the map image
When dye, the color value of pixel each in the map image is obtained into the picture respectively multiplied by respective alpha value in advance
Color value after vegetarian refreshments operation, and after the color value of pixel each in the map image is replaced with the pixel point processing
Color value；
Processor, for when need the map image is rendered when,
Color value directly after extracting the pixel point processing in the map image resource of storage；After the operation
Color value, the pixel alpha value and target map image slices vegetarian refreshments color value carry out hybrid operation, mixed
The color value of pixel after conjunction；
The hybrid operation includes Rn+ (1-As) × Rd, Gn+ (1-As) × Gd and Bn+ (1-As) × Bd；Wherein Rn, Gn and Bn
For the color value after the operation, As is the alpha value of the pixel, and Rd, Gd and Bd are the target map image pixel
The color value of value.
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| CN109598672B (en) * | 2017-09-30 | 2021-12-14 | 腾讯科技（深圳）有限公司 | Map road rendering method and device |
| CN110807114B (en) * | 2019-11-07 | 2024-01-30 | 北京有竹居网络技术有限公司 | Method, device, terminal and storage medium for picture display |
| CN112637667A (en) * | 2020-12-30 | 2021-04-09 | 上海铼锶信息技术有限公司 | Progress bar display method and intelligent electronic equipment |
| CN112711417A (en) * | 2020-12-30 | 2021-04-27 | 上海铼锶信息技术有限公司 | Manufacturing method of progress bar and electronic equipment |
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| JPH07282274A (en) * | 1994-04-04 | 1995-10-27 | Mitsubishi Electric Corp | Graphic display device |
| CN100590654C (en) * | 2006-08-01 | 2010-02-17 | 深圳安凯微电子技术有限公司 | Graphic accelerators and graphic processing method |
| CN101650822B (en) * | 2009-09-21 | 2012-05-16 | 潘建 | Method and system for generating mutual information |
| CN102096897B (en) * | 2011-03-17 | 2012-05-02 | 长沙景嘉微电子有限公司 | Realization of tile cache strategy in graphics processing unit (GPU) based on tile based rendering |
| DE202012013439U1 (en) * | 2011-10-12 | 2017-01-17 | Google Inc. | Using banding to optimize map playback in a three-dimensional tilt view |
| WO2014076744A1 (en) * | 2012-11-19 | 2014-05-22 | 株式会社ソニー・コンピュータエンタテインメント | Image processing device and image processing method |
| CN103915033A (en) * | 2012-12-29 | 2014-07-09 | 高德软件有限公司 | Method and apparatus for rendering map, and mobile terminal |
| CN103500465B (en) * | 2013-09-13 | 2017-01-18 | 西安工程大学 | Ancient cultural relic scene fast rendering method based on augmented reality technology |
| US9025902B2 (en) * | 2013-09-25 | 2015-05-05 | Lucasfilm Entertainment Company Ltd. | Post-render motion blur |
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