CN112616083A - Video display layer superposition processing method, device, equipment and storage medium - Google Patents
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- 238000004590 computer program Methods 0.000 claims description 11
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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Abstract
The application discloses a method, a device, equipment and a storage medium for processing superposition of display layers of videos, wherein the method comprises the following steps: acquiring the overlapping weight of the display layers in the overlapping area; screening a target display layer with the superposition weight not being 0 in the display layers; reading target display layer data of the target display layer at the overlapping area; and performing overlapping operation on the data of the target display layer based on the overlapping weight to obtain an overlapping video result of the overlapping area. According to the method, the display layer data with the superposition weight of 0 in the superposition area does not need to be read, so that the total amount of the display layer data read is reduced, and further, the bandwidth overhead and the time overhead in the process of generating the video based on the superposition of the display layers are relatively reduced. In addition, the application also provides a video display layer superposition processing device, equipment and a storage medium, and the beneficial effects are as described above.
Description
Technical Field
The present application relates to the field of video processing, and in particular, to a method, an apparatus, a device, and a storage medium for processing a video display layer overlay.
Background
The current video display system can provide a playing function of a corresponding video according to the requirements of users, and the video played in the current video display system is a result of overlapping and displaying multiple display layers.
At present, in the process of performing overlay processing on display layers, higher communication bandwidth is often occupied, and higher time overhead is generated, while a video display system often has the requirements of high bandwidth and low delay in the process of playing videos to users, so that in the process of superimposing and generating videos on a multi-channel display layer, optimization processing on the multi-channel overlaid display layers is more important.
Therefore, it is a problem to be solved by those skilled in the art to provide a method for processing display layer overlay of a video to relatively reduce bandwidth overhead and time overhead in the process of generating a video based on display layer overlay.
Disclosure of Invention
The application aims to provide a display layer superposition processing method, a display layer superposition processing device, display layer superposition processing equipment and a storage medium of a video, so as to relatively reduce bandwidth overhead and time overhead in the process of generating the video based on display layer superposition.
In order to solve the above technical problem, the present application provides a method for processing a video display layer in an overlay manner, including:
acquiring the overlapping weight of the display layers in the overlapping area;
screening a target display layer with the superposition weight not being 0 in the display layers;
reading target display layer data of the target display layer at the overlapping area;
and performing overlapping operation on the data of the target display layer based on the overlapping weight to obtain an overlapping video result of the overlapping area.
Preferably, the method further comprises:
reading data of the display layer at the non-overlapping area; wherein the non-overlapping region is a region where the display layers are not overlapped;
generating a non-overlay video result based on data of the display layer at the non-overlapping region;
and generating a final video result based on the overlapped video result and the non-overlapped video result.
Preferably, reading the target display layer data of the target display layer at the overlap region includes:
and reading the target display layer data of the target display layer at the overlapping area in the DDR storage device.
Preferably, the display layer includes a video layer and a graphics layer.
Preferably, the screening of the target display layer with the overlay weight different from 0 in the display layers includes:
and screening target display layers with the superposition weight larger than 0 in the display layers.
In addition, this application still provides a video's display layer stack processing apparatus, includes:
the weight acquisition module is used for acquiring the superposition weight of the display layers in the overlapping area;
the display layer screening module is used for screening a target display layer with the superposition weight not being 0 in the display layers;
the overlapping data reading module is used for reading the data of the target display layer at the overlapping area of the target display layer;
and the superposition processing module is used for executing superposition operation on the data of the target display layer based on the superposition weight to obtain a superposed video result of the superposed region.
Preferably, the apparatus further comprises:
the non-overlapping data reading module is used for reading data of the display layer at a non-overlapping area; wherein the non-overlapping region is a region where the display layers are not overlapped;
a non-overlay processing module for generating a non-overlay video result based on data of the display layer at the non-overlay region;
and the video result generating module is used for generating a final video result based on the superposed video result and the non-superposed video result.
Preferably, the apparatus further comprises:
and the data reading submodule is used for reading the data of the target display layer at the overlapping area in the DDR storage device.
In addition, the present application also provides a display layer overlay processing apparatus for a video, including:
a memory for storing a computer program;
a processor for implementing the steps of the display layer overlay processing method of the video when executing the computer program.
In addition, the present application also provides a computer readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the display layer overlay processing method of the video as described above.
According to the video display layer overlapping processing method, the overlapping weight of the display layers in the overlapping area is obtained firstly, then the target display layers with the overlapping weight not being 0 in the display layers are screened, the data of the target display layers in the overlapping area are read, and finally the overlapping operation is performed on the data of the target display layers based on the overlapping weight, so that the overlapping video result of the overlapping area is obtained. According to the method, only the target display layer data of the target display layer with the overlay weight not being 0 in the overlay region is read, and the overlay operation is performed based on the target display layer data to obtain the overlay video result of the overlay region, so that the display layer data with the overlay weight being 0 in the overlay region does not need to be read, the total amount of the display layer data is reduced, and further, the bandwidth overhead and the time overhead in the process of generating the video based on the overlay of the display layers are relatively reduced. In addition, the application also provides a video display layer superposition processing device, equipment and a storage medium, and the beneficial effects are as described above.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a video display layer overlay processing method disclosed in an embodiment of the present application;
fig. 2 is a schematic view of display layer superposition in a specific application scenario disclosed in the embodiment of the present application;
fig. 3 is a schematic structural diagram of a display layer overlay processing apparatus for video according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
At present, in the process of performing overlay processing on display layers, higher communication bandwidth is often occupied, and higher time overhead is generated, while a video display system often has the requirements of high bandwidth and low delay in the process of playing videos to users, so that in the process of superimposing and generating videos on a multi-channel display layer, optimization processing on the multi-channel overlaid display layers is more important.
Therefore, the core of the application is to provide a video display layer superposition processing method to relatively reduce the bandwidth overhead and the time overhead in the process of generating the video based on the display layer superposition.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present application discloses a method for processing a video display layer overlay, including:
step S10: the overlay weight between display layers in the overlap region is obtained.
It should be noted that the display layer in this step refers to each video data content layer required in the process of generating a video by integrating multiple video contents. In the process of generating the video, there may be a case of overlapping display between the display layers in the video display area, that is, in a specific area in the video display area, the video data contents of the display layers are displayed simultaneously, and in the overlapping area of the display layers, the display layers are overlapped according to the weight relationship, so as to generate the video in the overlapping area.
In this step, the overlay weight of the display layers in the overlay region is obtained, so as to further obtain the display layer data to be used when the overlay processing of each display layer is performed in the overlay region.
Step S11: and screening target display layers with the superposition weight not being 0 in the display layers.
In this step, a target display layer whose superimposition weight is not 0 is selected from the display layers, that is, a display layer that needs to be used when the superimposition processing of each display layer is performed in the superimposition area.
Step S12: and reading the target display layer data of the target display layer at the overlapping area.
After the target display layers with the overlay weight not being 0 in the display layers are screened, the target display layer data of the target display layers at the overlapping area are further read in the step, so that the overlay operation is further performed on the target display layer data in the subsequent steps. The key point of this step is to read only the data of the target display layer at the overlapping region of the target display layer, and not to read the data of the display layer with the overlay weight of 0, so as to reduce the bandwidth overhead and resource overhead when reading the data of the display layer with the overlay weight of 0.
Step S13: and performing overlapping operation on the data of the target display layer based on the overlapping weight to obtain an overlapping video result of the overlapping area.
After reading the target display layer data of the target display layer at the overlap region, the step further performs the overlay operation on the target display layer data based on the overlay weight, so as to obtain the overlay video result of the overlap region.
According to the video display layer overlapping processing method, the overlapping weight of the display layers in the overlapping area is obtained firstly, then the target display layers with the overlapping weight not being 0 in the display layers are screened, the data of the target display layers in the overlapping area are read, and finally the overlapping operation is performed on the data of the target display layers based on the overlapping weight, so that the overlapping video result of the overlapping area is obtained. According to the method, only the target display layer data of the target display layer with the overlay weight not being 0 in the overlay region is read, and the overlay operation is performed based on the target display layer data to obtain the overlay video result of the overlay region, so that the display layer data with the overlay weight being 0 in the overlay region does not need to be read, the total amount of the display layer data is reduced, and further, the bandwidth overhead and the time overhead in the process of generating the video based on the overlay of the display layers are relatively reduced.
On the basis of the above embodiment, as a preferred implementation, the method further includes:
reading data of the display layer at the non-overlapping area; wherein the non-overlapping region is a region where the display layers are not overlapped;
generating a non-overlay video result based on data of the display layer at the non-overlapping region;
and generating a final video result based on the overlapped video result and the non-overlapped video result.
In this embodiment, the method further reads data corresponding to non-overlapped non-overlapping regions between the display layers of each display layer, further generates a non-overlapped video result based on the data of the display layers in the non-overlapping regions, and further generates a final video result based on the overlapped video result and the non-overlapped video result, so that complete video content is generated by multiple display layer data. The embodiment further ensures the integrity and usability of the video generated based on multiple display layers.
On the basis of the foregoing embodiment, as a preferred implementation, reading the target display layer data of the target display layer at the overlap region includes:
and reading the target display layer data of the target display layer at the overlapping area in the DDR storage device.
It should be noted that the focus of the present embodiment is to read the target display layer data of the target display layer at the overlap region by the DDR memory device. Ddr (double Data rate) memory devices, i.e. double Data rate Synchronous Dynamic Random Access Memories (SDRAMs), are one of the memories, which are SDRAMs with double Data rates, and Synchronous Dynamic Random Access Memories (SDRAM) are Dynamic Random Access Memories (DRAM) with a synchronous interface, and the Data transmission speed is twice the system clock frequency, and the transmission performance is better than that of the conventional SDRAM due to the increased speed.
According to the embodiment, the target display layer data of the target display layer at the overlapping area is read in the DDR storage device, so that the reading efficiency and the reliability of the target display layer data are further improved.
On the basis of the above embodiment, as a preferred implementation, the display layer includes a video layer and a graphics layer.
It should be noted that, the video layer in this embodiment refers to a playing layer of dynamic content in a video, and the graphics layer refers to a playing layer of static content in the video, and the display layer in this embodiment further includes a video layer and a graphics layer, and further, based on obtaining a superimposition weight between the video layer and the graphics layer in an overlap region, a target display layer with a superimposition weight not equal to 0 in the video layer and the graphics layer is screened, target display layer data of the target display layer in the overlap region is read, and finally, based on the superimposition weight, a superimposition operation is performed on the target display layer data.
The embodiment further reduces the bandwidth overhead and the time overhead in the process of generating the video based on the superposition processing between the video layer and the graphic layer.
On the basis of the above series of embodiments, as a preferred implementation manner, the method for screening a target display layer whose overlay weight is not 0 in display layers includes:
and screening target display layers with the superposition weight larger than 0 in the display layers.
In addition, in the present embodiment, on the basis that the superimposition weight of the display layer that needs to be subjected to the superimposition processing operation in the superimposition area is greater than 0 and the sum of the superimposition weights of the display layers is 1, the target display layer with the superimposition weight greater than 0 in the display layers is screened, only the target display layer data of the target display layer in the superimposition area is obtained, and the superimposition operation is performed on the target display layer data based on the superimposition weight. The method and the device further improve the accuracy of screening the target display layer, further ensure that the data of the target display layer are subjected to the superposition operation, and obtain the accuracy of the superposition video result of the superposition area.
In order to deepen understanding of the series of embodiments, the application further provides a scene embodiment in a specific application scenario for further explanation.
Fig. 2 is a schematic diagram illustrating display layer superposition in an embodiment of the scenario provided in the present application. As shown in fig. 2, the DSP is a display window of the entire video system, G0 (including LAP) is a window of a graphic layer, V0 (including LAP) is a window of a video layer, and LAP is an overlapping area of G0 and V0, and an overlay process is required.
When the overlap region of V0 and G0 is subjected to the superimposition processing, output data is generated by a generally linear weighting calculation.
Such as a superposition process: out _ data (alpha) G0_ data + (1-alpha) V0_ data.
Where alpha is the weighting value for the graphics layer;
(1-alpha) is the weighting value for the video layer;
g0_ data is data of the graphics layer;
v0_ data is data of the video layer;
out _ data is data that is output to the downstream after final superimposition.
For a common video display system, the data of V0 and G0 are directly read out from the buffer, and are output after corresponding superposition is performed in the overlapping area of V0 and G0.
For a common video display system, the data of the graphics layer is read out from the DDR in the G0 area; in the V0 area, all data of the video layer are read out from the DDR; and data of the video layer and the graphic layer are overlapped in the LAP area.
However, when the weight of the video layer or the graphics layer is 1, the system still reads all data of the video layer and the graphics layer from the DDR, especially in the LAP area.
For the above scenario, for example, when the graphics layer weight for the overlap region is 1 and the video layer weight is 0, that is, when only the graphics layer is actually displayed in the overlap region, the present invention supports a mode: only the data of the graphic layer is read in the LAP area. During the overlay processing, the mode can be identified, and the data of the graphic layer is directly displayed in the LAP area (or the graphic layer and other invalid data are overlaid, and the weight of the graphic layer is 1, so that the data result cannot be influenced by other data).
Referring to fig. 3, an embodiment of the present application provides a display layer overlay processing apparatus for a video, including:
a weight obtaining module 10, configured to obtain a superimposition weight between display layers in an overlap region;
the display layer screening module 11 is configured to screen a target display layer with a superposition weight not equal to 0 in the display layers;
an overlapped data reading module 12, configured to read target display layer data of the target display layer at an overlapped region;
and the overlay processing module 13 is configured to perform an overlay operation on the data of the target display layer based on the overlay weight, so as to obtain an overlay video result in the overlay region.
Further, as a preferred embodiment, the apparatus further comprises:
the non-overlapping data reading module is used for reading data of the display layer at a non-overlapping area; wherein the non-overlapping region is a region where the display layers are not overlapped;
a non-overlay processing module for generating a non-overlay video result based on data of the display layer at the non-overlay region;
and the video result generating module is used for generating a final video result based on the superposed video result and the non-superposed video result.
Further, as a preferred embodiment, the apparatus further comprises:
and the data reading submodule is used for reading the data of the target display layer at the overlapping area in the DDR storage device.
According to the video display layer overlapping processing device, the overlapping weight of the display layers in the overlapping area is firstly obtained, then the target display layers with the overlapping weight not being 0 in the display layers are screened, the data of the target display layers in the overlapping area are read, and finally the overlapping operation is performed on the data of the target display layers based on the overlapping weight, so that the overlapping video result of the overlapping area is obtained. According to the device, only the target display layer data of the target display layer with the overlay weight not being 0 in the overlay region is read, and the overlay operation is executed based on the target display layer data to obtain the overlay video result of the overlay region, so that the display layer data with the overlay weight being 0 in the overlay region does not need to be read, the total amount of the display layer data is reduced, and further, the bandwidth overhead and the time overhead in the process of generating the video based on the overlay of the display layers are relatively reduced.
In addition, the present application also provides a display layer overlay processing apparatus for a video, including:
a memory for storing a computer program;
a processor for implementing the steps of the display layer overlay processing method of the video when executing the computer program.
According to the video display layer overlapping processing equipment, the overlapping weight of the display layers in the overlapping area is firstly obtained, then the target display layers with the overlapping weight not being 0 in the display layers are screened, the data of the target display layers in the overlapping area are read, and finally the overlapping operation is carried out on the data of the target display layers based on the overlapping weight, so that the overlapping video result of the overlapping area is obtained. According to the device, only the target display layer data of the target display layer with the overlay weight not being 0 in the overlay region is read, and the overlay operation is executed based on the target display layer data to obtain the overlay video result of the overlay region, so that the display layer data with the overlay weight being 0 in the overlay region does not need to be read, the total amount of the display layer data is reduced, and further, the bandwidth overhead and the time overhead in the process of generating the video based on the overlay of the display layers are relatively reduced.
In addition, the present application also provides a computer readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the display layer overlay processing method of the video as described above.
The computer-readable storage medium provided by the application firstly obtains the overlay weight of the display layers in the overlay region, further screens the target display layers with the overlay weight not being 0 in the display layers, reads the target display layer data of the target display layers in the overlay region, and finally performs overlay operation on the target display layer data based on the overlay weight to obtain the overlay video result of the overlay region. Because only the target display layer data of the target display layer with the overlay weight not 0 in the overlay region is read in the computer readable storage medium, and the overlay operation is performed based on the target display layer data to obtain the overlay video result of the overlay region, the display layer data with the overlay weight of 0 in the overlay region does not need to be read, the total amount of the display layer data is reduced, and the bandwidth overhead and the time overhead in the process of generating the video based on the overlay of the display layers are relatively reduced.
The detailed description is given above of a method, an apparatus, a device, and a storage medium for processing video display layer superposition according to the present application. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A display layer overlay processing method of a video, comprising:
acquiring the overlapping weight of the display layers in the overlapping area;
screening a target display layer of which the superposition weight is not 0 in the display layers;
reading target display layer data of the target display layer at the overlap region;
and performing overlapping operation on the data of the target display layer based on the overlapping weight to obtain an overlapping video result of the overlapping area.
2. The method for processing superimposition of a display layer of video according to claim 1, further comprising:
reading data of the display layer at a non-overlapping area; wherein the non-overlapping region is a region where the display layers do not overlap;
generating a non-overlay video result based on data of the display layer at a non-overlapping region;
generating a final video result based on the overlay video result and the non-overlay video result.
3. The method according to claim 1, wherein reading the target display layer data of the target display layer at the overlap region comprises:
reading the target display layer data of the target display layer at the overlap region in a DDR memory device.
4. The method according to claim 1, wherein the display layer includes a video layer and a graphics layer.
5. The method according to any one of claims 1 to 4, wherein the selecting a target display layer of the display layers whose overlay weight is not 0 includes:
and screening the target display layer with the superposition weight larger than 0 in the display layers.
6. A display layer superimposition processing apparatus for a video, comprising:
the weight acquisition module is used for acquiring the superposition weight of the display layers in the overlapping area;
the display layer screening module is used for screening a target display layer with the superposition weight not being 0 in the display layer;
the overlapping data reading module is used for reading the target display layer data of the target display layer at the overlapping area;
and the superposition processing module is used for executing superposition operation on the data of the target display layer based on the superposition weight to obtain a superposed video result of the superposed region.
7. The apparatus for processing superimposition of video according to claim 6, further comprising:
a non-overlapping data reading module for reading data of the display layer at a non-overlapping area; wherein the non-overlapping region is a region where the display layers do not overlap;
a non-overlay processing module to generate a non-overlay video result based on data of the display layer at a non-overlap region;
and the video result generating module is used for generating a final video result based on the overlapped video result and the non-overlapped video result.
8. The apparatus for processing superimposition of video according to claim 6, further comprising:
a data reading sub-module, configured to read, in the DDR memory device, the target display layer data of the target display layer at the overlap region.
9. A display layer superimposition processing device for a video, characterized by comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method of display layer overlay processing of video according to any of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, implements the steps of the display layer overlay processing method of a video according to any one of claims 1 to 5.
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| CN114090550A (en) * | 2022-01-19 | 2022-02-25 | 成都博恩思医学机器人有限公司 | Robot database construction method and system, electronic device and storage medium |
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