CN112261443B - Image processing method and device and image processing system - Google Patents
Image processing method and device and image processing system Download PDFInfo
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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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- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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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
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4781—Games
Abstract
The application provides an image processing method and device and an image processing system, wherein the image processing method is applied to a first terminal and comprises the following steps: dividing pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data; generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group; generating a first data group and a second data group corresponding to the image to be processed according to the first data and the second data corresponding to each pixel group of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; and sending the first coded data and the second coded data to a second terminal, and effectively storing the complete data of each pixel by the method to realize lossless image coding.
Description
Technical Field
The present application relates to the field of internet technologies, and in particular, to an image processing method and apparatus, an image processing system, a computing device, and a computer-readable storage medium.
Background
With the development of the internet technology, the cloud computing technology is becoming mature, cloud games are generated accordingly, when a user plays the cloud games, game pictures are generated in a server, game images are sent to a client after being coded, and the client plays the game pictures after decoding.
At present, when a game image is coded, an encoding mode is to convert an RGB format of the image into a YUV444 format, the encoding conversion is lossless conversion, but few terminal devices supporting YUV444 format decoding are available in the market at present, a user needs to replace the terminal devices to experience games, and the game cost of the user is too high, so that YUV444 format conversion is not practical, and a method is to convert the RGB format of the image into a YUV420 format, the capacity of the YUV420 format is smaller than that of the RGB format, when the image is coded, a part of data can be lost, the precision of a game picture image can be lost, and the game experience of the user can be greatly reduced.
Therefore, how to improve the accuracy of game images at a low cost becomes a problem to be solved urgently by technicians.
Disclosure of Invention
In view of the above, embodiments of the present application provide an image processing method and apparatus, an image processing system, a computing device, and a computer-readable storage medium, so as to solve technical defects in the prior art.
According to a first aspect of the embodiments of the present application, there is provided an image processing method applied to a first terminal, including:
dividing pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data;
generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group;
generating a first data group and a second data group corresponding to an image to be processed according to first data and second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed;
respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed;
and sending the first coded data and the second coded data of the image to be processed to a second terminal.
According to a second aspect of the embodiments of the present application, there is provided an image processing method applied to a second terminal, including:
receiving first coded data and second coded data of an image to be processed;
decoding the first coded data to obtain a first image corresponding to the image to be processed, and decoding the second coded data to obtain a second image corresponding to the image to be processed;
and generating an original image corresponding to the image to be processed according to the first image and the second image.
According to a third aspect of embodiments of the present application, there is provided an image processing system including: the system comprises a first terminal and a second terminal, wherein,
the first terminal is configured to divide pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data; generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group; generating a first data group and a second data group corresponding to an image to be processed according to first data and second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; sending the first coded data and the second coded data of the image to be processed to a second terminal;
the second terminal is configured to receive first coded data and second coded data of an image to be processed; decoding the first coded data to obtain a first image corresponding to the image to be processed, and decoding the second coded data to obtain a second image corresponding to the image to be processed; and generating an original image corresponding to the image to be processed according to the first image and the second image.
According to a fourth aspect of the embodiments of the present application, there is provided an image processing apparatus, configured in a first terminal, including:
the image processing device comprises a dividing module, a processing module and a processing module, wherein the dividing module is configured to divide pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset dividing rule, each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data;
the first generation module is configured to generate first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group;
the second generation module is configured to generate a first data group and a second data group corresponding to the image to be processed according to the first data and the second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed;
the encoding module is configured to encode the first data group and the second data group respectively to obtain first encoded data and second encoded data corresponding to the image to be processed;
and the transmitting module is configured to transmit the first coded data and the second coded data of the image to be processed to a second terminal.
According to a fifth aspect of the embodiments of the present application, there is provided an image processing apparatus, configured in a second terminal, including:
the image processing device comprises a receiving module, a processing module and a processing module, wherein the receiving module is configured to receive first encoding data and second encoding data of an image to be processed;
the decoding module is configured to decode the first coded data to obtain a first image corresponding to the image to be processed, and decode the second coded data to obtain a second image corresponding to the image to be processed;
the generating module is configured to generate an original image corresponding to the image to be processed according to the first image and the second image.
According to a sixth aspect of embodiments herein, there is provided a computing device comprising a memory, a processor and computer instructions stored on the memory and executable on the processor, the processor implementing the steps of the image processing method when executing the instructions.
According to a seventh aspect of embodiments of the present application, there is provided a computer-readable storage medium storing computer instructions which, when executed by a processor, implement the steps of the image processing method.
In the embodiment of the application, pixel points of an image to be processed are divided into a plurality of ordered pixel groups according to a preset division rule at a first terminal, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data; generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group; generating a first data group and a second data group corresponding to an image to be processed according to first data and second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; the image to be processed is coded twice, the chrominance data and the luminance data corresponding to each pixel can be reserved in the most complete form, any original data cannot be lost, the image can be restored more completely during subsequent decoding and restoration, the first coded data and the second coded data of the image to be processed are sent to the second terminal, transmission with higher quality is achieved, and transmission efficiency is improved.
Drawings
FIG. 1 is a block diagram of a computing device provided by an embodiment of the present application;
fig. 2 is a flowchart of an image processing method applied to a first terminal according to an embodiment of the present application;
fig. 3 is a flowchart of a method for generating first data and second data in an image processing method applied to a first terminal according to an embodiment of the present application;
fig. 4 is a flowchart of an image processing method applied to a second terminal according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an image processing system provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of an image processing apparatus configured in a first terminal according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an image processing apparatus configured in a second terminal according to an embodiment of the present disclosure.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit and scope of this application, and thus this application is not limited to the specific implementations disclosed below.
The terminology used in the one or more embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of the present application. As used in one or more embodiments of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in one or more embodiments of the present application refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that, although the terms first, second, etc. may be used herein in one or more embodiments to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first aspect may be termed a second aspect, and, similarly, a second aspect may be termed a first aspect, without departing from the scope of one or more embodiments of the present application. The word "if" as used herein may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.
First, the noun terms to which one or more embodiments of the present invention relate are explained.
YUV: is a color coding method, which is often used in various video processing, and YUV allows for a reduction in the bandwidth of chrominance in consideration of human perception when encoding photos or videos.
Luminance data: y in YUV format, represents brightness, i.e., a gray scale value.
Chroma data: the UV in YUV, which represents chroma, is used to describe the color and saturation of an image for a given pixel color.
In the present application, an image processing method and apparatus, a computing device, and a computer-readable storage medium are provided, which are described in detail one by one in the following embodiments.
FIG. 1 shows a block diagram of a computing device 100 according to an embodiment of the present application. The components of the computing device 100 include, but are not limited to, memory 110 and processor 120. The processor 120 is coupled to the memory 110 via a bus 130 and a database 150 is used to store data.
Computing device 100 also includes access device 140, access device 140 enabling computing device 100 to communicate via one or more networks 160. Examples of such networks include the Public Switched Telephone Network (PSTN), a Local Area Network (LAN), a Wide Area Network (WAN), a Personal Area Network (PAN), or a combination of communication networks such as the internet. Access device 140 may include one or more of any type of network interface (e.g., a Network Interface Card (NIC)) whether wired or wireless, such as an IEEE802.11 Wireless Local Area Network (WLAN) wireless interface, a worldwide interoperability for microwave access (Wi-MAX) interface, an ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a bluetooth interface, a Near Field Communication (NFC) interface, and so forth.
In one embodiment of the present application, the above-mentioned components of the computing device 100 and other components not shown in fig. 1 may also be connected to each other, for example, by a bus. It should be understood that the block diagram of the computing device architecture shown in FIG. 1 is for purposes of example only and is not limiting as to the scope of the present application. Those skilled in the art may add or replace other components as desired.
Computing device 100 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., tablet, personal digital assistant, laptop, notebook, netbook, etc.), a mobile phone (e.g., smartphone), a wearable computing device (e.g., smartwatch, smartglasses, etc.), or other type of mobile device, or a stationary computing device such as a desktop computer or PC. Computing device 100 may also be a mobile or stationary server.
Wherein the processor 120 may perform the steps of the image processing method shown in fig. 2. Fig. 2 shows a flowchart of an image processing method according to an embodiment of the present application, which is applied to a first terminal and includes steps 202 to 210.
Step 202: dividing pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data.
The first terminal is a terminal for executing an encoding operation on the image to be processed, and may be a server or a client with an encoding function.
The image to be processed is an image needing to be encoded, such as a video frame image generated in a server by a cloud game, or any image needing to be encoded and processed, such as a photo needing to be transmitted.
Each image has corresponding pixels, such as a 1920 × 1080 sized image, that is, 1920 × 1080 pixels representing the image, and for an 800 × 1200 sized image, that is, 800 × 1200 pixels representing the image, each pixel corresponds to luminance data Y and chrominance data UV, and for example, for a pixel in row 1 and column 1, the pixel can be simplified to be represented as (1, 1 11 ，U 11 ，V 11 ) For the pixel points in the ith row and the jth column, the values can be simply expressed as (i, j; y is ij ，U ij ，V ij ) Where i and j represent the coordinates of the pixel, i.e. the label of the pixel, Y ij Luminance data, U, representing the pixel ij And V ij And expressing the chrominance data of the pixel point.
In practical application, according to the image coding method in the YUV420 format, an image to be processed needs to be divided into a plurality of pixel groups, each pixel group includes 4 pixels, the specific division manner is many, for simple representation, an 8 × 4 image to be processed is taken as an example for explanation, the image can be sequentially slid on the image to be processed according to a pixel frame with a size of 4 × 1, the pixels of the image to be processed are divided into a plurality of sequential pixel groups, as shown in the following table 1, 11, 12, 13, and 14 are one pixel group, 15, 16, 17, and 18 are one pixel group, and so on.
TABLE 1
| 11 12 13 14 | 15 16 17 18 |
| 21 22 23 24 | 25 26 27 28 |
| 31 32 33 34 | 35 36 37 38 |
| 41 42 43 44 | 45 46 47 48 |
Or sequentially sliding a pixel frame with the size of 2 × 2 on the image to be processed, dividing the pixel points of the image to be processed into a plurality of ordered pixel groups, as shown in table 2 below, 11, 12, 21, and 22 are a pixel group, 13, 14, 23, and 24 are a pixel group, and so on.
TABLE 2
Or sequentially sliding a pixel frame with the size of 1 × 4 on the image to be processed, dividing the pixel points of the image to be processed into a plurality of ordered pixel groups, as shown in table 3 below, 11, 21, 31, and 41 are a pixel group, 12, 22, 32, and 42 are a pixel group, and so on.
TABLE 3
It should be noted that, the above are only a few division rules provided in the present application, and in practical applications, corresponding grouping may be performed according to practical situations, and the present application does not limit any specific division rule.
Step 204: and generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group.
Specifically, referring to fig. 3, fig. 3 shows a flowchart for generating first data and second data corresponding to each pixel group in the image processing method provided in the embodiment of the present application, and step 204 includes steps 302 to 306:
step 302: a target pixel point is determined in each pixel group.
There are many methods for determining the target pixel point, for example, one pixel point may be selected from each pixel group as the target pixel point, or the target pixel point is determined according to the label of each pixel point in each pixel group, for example, the pixel point with the smallest label of the pixel point in each pixel group is determined as the target pixel point or the pixel point with the largest label of the pixel point in each pixel group is determined as the target pixel point.
In the embodiment provided in the present application, the grouping method shown in table 2 is taken as an example for further explanation, referring to table 2, the pixel point with the smallest label of the pixel point in each pixel group is determined as the target pixel point, that is, 11, 13, 15, 17, 31, 33, 35, 37 are respectively the target pixel points corresponding to 8 pixel groups,
step 304: and extracting the chrominance data of the target pixel point and the luminance data of the four pixel points in each pixel group as first data corresponding to each pixel group.
And extracting the chrominance data (namely UV data) of the target pixel point in each pixel group and the luminance data (namely Y data) of the four pixel points as first data corresponding to each pixel group.
In the embodiment provided in the present application, following the above example, referring to table 2, for the first pixel group, the pixel 11 is the target pixel, and the UV data (U) of the pixel 11 is extracted 11 ，V 11 ) And brightness data (Y) of four pixels 11 ，Y 12 ，Y 21 ，Y 22 ) As first data (U) of the current pixel group 11 ，V 11 ，Y 11 ，Y 12 ，Y 21 ，Y 22 )。
For the second pixel group, pixel 13 is the target pixel, and the UV data (U) of pixel 13 is extracted 13 ，V 13 ) And brightness data (Y) of four pixels 13 ，Y 14 ，Y 23 ，Y 24 ) As first data (U) of the current pixel group 13 ，V 13 ，Y 13 ，Y 14 ，Y 23 ，Y 24 ) And so on.
Step 306: and extracting the chrominance data of the non-target pixel points in each pixel group as second data corresponding to each pixel group.
And extracting the chrominance data (UV data) of the non-target pixel points in each pixel group as second data corresponding to each pixel group.
In the embodiment provided by the present application, the above example is continued, see table 2, for the first pixel group, the pixel point 11 is a target pixel point, and UV data (U) of other pixel points except the pixel point 11 is extracted 12 ，V 12 )、(U 21 ，V 21 )、(U 22 ，V 22 ) Second data (U) as current pixel group 12 ，V 12 ，U 21 ，V 21 ，U 22 ，V 22 )。
For the second pixel group, pixel 13 is the target pixel, and the UV data (U) of other pixels except pixel 13 is extracted 14 ，V 14 )、(U 23 ，V 23 )、(U 24 ，V 24 ) Second data (U) as a current pixel group 14 ，V 14 ，U 23 ，V 23 ，U 24 ，V 24 ) And so on.
Step 206: and generating a first data group and a second data group corresponding to the image to be processed according to the first data and the second data corresponding to each pixel group in the plurality of ordered pixel groups of the image to be processed.
After first data corresponding to each pixel group in a plurality of ordered pixel groups of an image to be processed are obtained, the first data corresponding to each pixel group are spliced into a first data group according to the data of the ordered pixel groups, and after second data corresponding to each pixel group in the ordered pixel groups of the image to be processed are obtained, the second data corresponding to each pixel group are spliced into a second data group according to the data of the ordered pixel groups.
In the embodiment provided by the present application, still following the above example, referring to table 2, after the first data and the second data of each pixel group in the multiple ordered pixel groups of the image to be processed are obtained, the first data of each pixel group is merged into the first data group [ (U) is performed 11 ，V 11 ，Y 11 ，Y 12 ，Y 21 ，Y 22 ),(U 13 ，V 13 ，Y 13 ，Y 14 ，Y 23 ，Y 24 ),……(U 37 ，V 37 ，Y 37 ，Y 38 ，Y 47 ，Y 48 )]And splicing the second data of each pixel group into a second data group [ (U) 12 ，V 12 ，U 21 ，V 21 ，U 22 ，V 22 )，(U 14 ，V 14 ，U 23 ，V 23 ，U 24 ，V 24 )，……(U 38 ，V 38 ，U 47 ，V 47 ，U 48 ，V 48 )]。
Step 208: and respectively coding the first data group and the second data group to obtain first coded data and second coded data corresponding to the image to be processed.
Specifically, the encoding the first data group and the second data group respectively to obtain first encoded data and second encoded data corresponding to the image to be processed includes: sequentially storing a plurality of first data in the first data group into a first color coding format to generate first coded data; and sequentially storing the plurality of second data in the second data group into a second color coding format to generate second coded data.
The YUV420 coding format is very popular, most terminals on the market support decoders of the coding format at present, and the capacity of the YUV420 coding format is smaller than that of the RGB format, so that the size of an image can be effectively reduced, the data transmission time is reduced, and the data transmission efficiency is improved.
The YUV420 encoding format can store 4 pieces of luminance data and 1 piece of chrominance data, and 6 pieces of data in total, so that the YUV420 encoding can be respectively carried out on a first data group and a second data group, a plurality of first data in the first data group are stored in the first YUV420 encoding format to generate first encoded data, and a plurality of second data in the second data group are stored in the second YUV420 encoding format to generate second encoded data.
In the examples provided in this application, following the above example, the first data set [ (U) is used 11 ，V 11 ，Y 11 ，Y 12 ，Y 21 ，Y 22 ),(U 13 ，V 13 ，Y 13 ，Y 14 ，Y 23 ，Y 24 ),……(U 37 ，V 37 ，Y 37 ，Y 38 ，Y 47 ，Y 48 )]Storing the data in a first YUV420 encoding format to generate a first encoded data E1, and storing a second data set [ (U) 12 ，V 12 ，U 21 ，V 21 ，U 22 ，V 22 )，(U 14 ，V 14 ，U 23 ，V 23 ，U 24 ，V 24 )，……(U 38 ，V 38 ，U 47 ，V 47 ，U 48 ，V 48 )]And storing the coded data into a second YUV420 coding format to generate second coded data E2.
Step 210: and sending the first coded data and the second coded data of the image to be processed to a second terminal.
In practical applications, the second terminal is a terminal having a decoding function, and may be a server or a client, and the specific representation form of the second terminal is not limited in this application.
And after the image to be processed is coded twice, obtaining first coded data and second coded data, and sending the first coded data and the second coded data to a second terminal.
The image processing method provided by the embodiment of the application is applied to a first terminal, and the pixel points of an image to be processed are divided into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data; generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group; in this way, the luminance data and the chrominance data of each pixel are not lost, the original data of the pixel can be ensured, and a first data group and a second data group corresponding to the image to be processed are generated according to the first data and the second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; the image to be processed is coded twice, the chrominance data and the luminance data corresponding to each pixel can be reserved in the most complete form, any original data cannot be lost, the image can be restored more completely during subsequent decoding and restoration, the first coded data and the second coded data of the image to be processed are sent to the second terminal, and because the size of the YUV420 format is smaller than that of the RGB format, transmission with higher quality is achieved, and transmission efficiency is improved.
Fig. 4 illustrates an image processing method according to an embodiment of the present application, which is applied to a second terminal and includes steps 402 to 406.
Step 402: first coded data and second coded data of an image to be processed are received.
In practical application, the second terminal receives the first coded data and the second coded data of the image to be processed, which are sent by the first terminal, wherein the second terminal can be a client or a server, and the second terminal only needs to have decoding capability.
In the embodiment provided by the application, the second terminal is a client, and the client receives the first encoded data E1 and the second encoded data E2 of the image to be processed, which are sent by the server.
Step 404: and decoding the first coded data to obtain a first image corresponding to the image to be processed, and decoding the second coded data to obtain a second image corresponding to the image to be processed.
And respectively decoding the first coded data and the second coded data to obtain a first image and a second image corresponding to the image to be processed.
Specifically, decoding the first encoded data to obtain a first image corresponding to the image to be processed, and decoding the second encoded data to obtain a second image corresponding to the image to be processed includes the following steps S4042 to S4046:
s4042, acquiring a plurality of first data in a first color coding format corresponding to the first encoded data, and acquiring a plurality of second data in a second color coding format corresponding to the second encoded data.
In practical application, the decoding of the first encoded data is specifically to obtain a plurality of first data in a first YUV420 format corresponding to the first encoded data.
Decoding the second encoded data specifically to obtain a plurality of second data in the second YUV4420 format corresponding to the second encoded data.
In the embodiments provided in the present application, still taking the above table 2 as an example to further explain the present application, the first encoded data is decoded to obtain a plurality of first data [ (U) 11 ，V 11 ，Y 11 ，Y 12 ，Y 21 ，Y 22 ),(U 13 ，V 13 ，Y 13 ，Y 14 ，Y 23 ，Y 24 ),……(U 37 ，V 37 ，Y 37 ，Y 38 ，Y 47 ，Y 48 )]Decoding the second coded data to obtain a plurality of second data [ (U) 12 ，V 12 ，U 21 ，V 21 ，U 22 ，V 22 )，(U 14 ，V 14 ，U 23 ，V 23 ，U 24 ，V 24 )，……(U 38 ，V 38 ，U 47 ，V 47 ，U 48 ，V 48 )]。
S4044, extracting the brightness data of four pixel points and the chromaticity data of one pixel point in each first data, and extracting the chromaticity data of three pixel points in each second data.
In the embodiment provided by the present application, the above example is used, and the luminance data of four pixel points and the chrominance data U of one pixel point in each first data are extracted 11 ，V 11 ，Y 11 ，Y 12 ，Y 21 ，Y 22 ,……U 37 ，V 37 ，Y 37 ，Y 38 ，Y 47 ，Y 48 And extracting the chrominance data U of three pixel points in each second data 12 ，V 12 ，U 21 ，V 21 ，U 22 ，V 22 ……U 38 ，V 38 ，U 47 ，V 47 ，U 48 ，V 48 。
S4046, generating a first image corresponding to the image to be processed according to the brightness data of four pixel points and the chromaticity data of one pixel point in each first data, and generating a second image of the image to be processed according to the chromaticity data of three pixel points in each second data.
In the examples provided in this application, follow the above example, according to U 11 ，V 11 ，Y 11 ，Y 12 ，Y 21 ，Y 22 ,……U 37 ，V 37 ，Y 37 ，Y 38 ，Y 47 ，Y 48 Generating a first image according to U 12 ，V 12 ，U 21 ，V 21 ，U 22 ，V 22 ……U 38 ，V 38 ，U 47 ，V 47 ，U 48 ，V 48 A second image is generated.
Step 406: and generating an original image corresponding to the image to be processed according to the first image and the second image.
And splicing the first image and the second image to generate an original image corresponding to the image to be processed.
Specifically, in practical applications, generating an original image corresponding to the image to be processed according to the first image and the second image includes: and splicing the chrominance data of each pixel point in the second image with the luminance data of the corresponding pixel point in the first image to generate an original image corresponding to the image to be processed.
In the embodiment provided in the present application, following the above example, in the first image, the pixel point is labeled 12 until there is the luminance data Y 12 The chrominance data U corresponding to the pixel point 12 in the second image is marked 12 And V 12 Splicing into the pixel point label 12 of the first image, generating the chrominance data and the luminance data (Y) corresponding to the pixel point 12 ，U 12 ，V 12 ). And analogizing in sequence to finally generate the original image corresponding to the image to be processed.
The image processing method provided by the embodiment of the application is applied to the second terminal, and the first coded data and the second coded data are decoded twice, and then the decoding results are reassembled to generate the image, so that the original image is more completely restored by the obtained image, the transmission with higher quality is realized, and the image quality is improved.
Referring to fig. 5, the present application further provides an image processing system, and fig. 5 shows a schematic structural diagram of the image processing system, which includes a first terminal 502 and a second terminal 504.
The first terminal 502 is configured to divide pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises luminance data and chrominance data; generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group; generating a first data group and a second data group corresponding to an image to be processed according to first data and second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; sending the first coded data and the second coded data of the image to be processed to a second terminal 504;
the second terminal 504 is configured to receive first coded data and second coded data of an image to be processed; decoding the first coded data to obtain a first image corresponding to the image to be processed, and decoding the second coded data to obtain a second image corresponding to the image to be processed; and generating an original image corresponding to the image to be processed according to the first image and the second image.
The first terminal 502, further configured to:
determining a target pixel point in each pixel group;
extracting the chrominance data of a target pixel point and the luminance data of four pixel points in each pixel group as first data corresponding to each pixel group;
and extracting the chrominance data of the non-target pixel points in each pixel group as second data corresponding to each pixel group.
The first terminal 502, further configured to:
selecting one pixel point in each pixel group as a target pixel point; or
And determining a target pixel point according to the label of each pixel point in each pixel group.
The first terminal 502, further configured to:
splicing the first data corresponding to each pixel group into a first data group according to the sequence of the plurality of ordered pixel groups corresponding to the image to be processed;
and splicing the second data corresponding to each pixel group into a second data group according to the sequence of the plurality of ordered pixel groups corresponding to the image to be processed.
The first terminal 502, further configured to:
sequentially sliding the pixel frames with the sizes of 1 to 4 on the image to be processed, and dividing pixel points of the image to be processed into a plurality of ordered pixel groups; or
Sequentially sliding on the image to be processed according to the pixel frame with the size of 2 x 2, and dividing pixel points of the image to be processed into a plurality of ordered pixel groups; or
And sequentially sliding the pixel frames with the sizes of 4 x 1 on the image to be processed, and dividing the pixel points of the image to be processed into a plurality of ordered pixel groups.
The first terminal 502, further configured to:
sequentially storing a plurality of first data in the first data group into a first color coding format to generate first coded data;
and sequentially storing the plurality of second data in the second data group into a second color coding format to generate second coded data.
The second terminal 504, further configured to:
acquiring a plurality of first data in a first color coding format corresponding to the first coded data, and acquiring a plurality of second data in a second color coding format corresponding to the second coded data;
extracting brightness data of four pixel points and chromaticity data of one pixel point in each first data, and extracting chromaticity data of three pixel points in each second data;
and generating a first image corresponding to the image to be processed according to the brightness data of four pixel points and the chrominance data of one pixel point in each first data, and generating a second image of the image to be processed according to the chrominance data of three pixel points in each second data.
The second terminal 504, further configured to:
and splicing the chrominance data of each pixel point in the second image with the luminance data of the corresponding pixel point in the first image to generate an original image corresponding to the image to be processed.
The image processing system that this application embodiment provided, with pending image through twice coding, generate first coded data and second coded data, can guarantee effectively that the chrominance data of every pixel does not lose, the color of pending image has been guaranteed to the at utmost, after transmitting the second terminal, utilize the current decoder of second terminal to go forward twice again and decode, data reassembly after decoding twice again, generate the image, can guarantee that the image that generates has more completely reduced original image, higher quality transmission has been realized, and the user can utilize current second terminal to realize, need not to purchase new terminal equipment again, user's expense has been practiced thrift, can also attract the user with higher clear image, attract the user to play clear cloud game of picture quality.
Corresponding to the above embodiment of the image processing method applied to the first terminal, the present application further provides an embodiment of an image processing apparatus configured at the first terminal, and fig. 6 shows a schematic structural diagram of the image processing apparatus according to an embodiment of the present application. As shown in fig. 6, the apparatus includes:
a dividing module 602 configured to divide pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset dividing rule, wherein each pixel group includes four pixel points, and each pixel point includes luminance data and chrominance data;
a first generating module 604 configured to generate first data and second data corresponding to each pixel group according to luminance data and chrominance data of four pixels in each pixel group;
a second generating module 606 configured to generate a first data group and a second data group corresponding to the image to be processed according to the first data and the second data corresponding to each of the plurality of ordered pixel groups of the image to be processed;
an encoding module 608, configured to encode the first data group and the second data group respectively, to obtain first encoded data and second encoded data corresponding to the image to be processed;
a sending module 610 configured to send the first encoded data and the second encoded data of the image to be processed to a second terminal.
Optionally, the first generating module 604 is further configured to:
determining a target pixel point in each pixel group;
extracting the chrominance data of a target pixel point and the luminance data of four pixel points in each pixel group as first data corresponding to each pixel group;
and extracting the chrominance data of the non-target pixel points in each pixel group as second data corresponding to each pixel group.
Optionally, the first generating module 604 is further configured to:
selecting one pixel point in each pixel group as a target pixel point; or
And determining a target pixel point according to the label of each pixel point in each pixel group.
Optionally, the second generating module 606 is further configured to:
splicing the first data corresponding to each pixel group into a first data group according to the sequence of the plurality of ordered pixel groups corresponding to the image to be processed;
and splicing the second data corresponding to each pixel group into a second data group according to the sequence of the plurality of ordered pixel groups corresponding to the image to be processed.
Optionally, the dividing module 602 is further configured to:
sequentially sliding the pixel frames with the sizes of 1 to 4 on the image to be processed, and dividing pixel points of the image to be processed into a plurality of ordered pixel groups; or
Sequentially sliding on the image to be processed according to the pixel frame with the size of 2 x 2, and dividing pixel points of the image to be processed into a plurality of ordered pixel groups; or
And sequentially sliding the pixel frames with the sizes of 4 x 1 on the image to be processed, and dividing the pixel points of the image to be processed into a plurality of ordered pixel groups.
Optionally, the encoding module 608 is further configured to:
sequentially storing a plurality of first data in the first data group into a first color coding format to generate first coded data;
and sequentially storing the plurality of second data in the second data group into a second color coding format to generate second coded data.
The image processing device provided by the embodiment of the application is configured at a first terminal, and divides pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data; generating first data and second data corresponding to each pixel group according to the brightness data and the chrominance data of the four pixel points in each pixel group; the method can ensure that the brightness data and the chrominance data of each pixel are not lost, can ensure the original data of the pixel, and generates a first data group and a second data group corresponding to the image to be processed according to the first data and the second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; the image to be processed is coded twice, the chrominance data and the luminance data corresponding to each pixel can be reserved in the most complete form, any original data cannot be lost, the image can be restored more completely during subsequent decoding and restoration, and the first coded data and the second coded data of the image to be processed are sent to the second terminal, so that higher-quality transmission is realized and the transmission efficiency is improved because the size of the YUV420 format is smaller than that of the RGB format.
Corresponding to the above embodiment of the image processing method applied to the second terminal, the present application further provides an embodiment of an image processing apparatus configured at the second terminal, and fig. 7 shows a schematic structural diagram of the image processing apparatus according to an embodiment of the present application. As shown in fig. 7, the apparatus includes:
a receiving module 702 configured to receive first encoded data and second encoded data of an image to be processed;
a decoding module 704, configured to decode the first encoded data to obtain a first image corresponding to the image to be processed, and decode the second encoded data to obtain a second image corresponding to the image to be processed;
a generating module 706 configured to generate an original image corresponding to the image to be processed according to the first image and the second image.
Optionally, the decoding module 704 is further configured to:
acquiring a plurality of first data in a first color coding format corresponding to the first coded data, and acquiring a plurality of second data in a second color coding format corresponding to the second coded data;
extracting brightness data of four pixel points and chromaticity data of one pixel point in each first data, and extracting chromaticity data of three pixel points in each second data;
and generating a first image corresponding to the image to be processed according to the brightness data of four pixel points and the chrominance data of one pixel point in each first data, and generating a second image of the image to be processed according to the chrominance data of three pixel points in each second data.
Optionally, the generating module 706 is further configured to:
and splicing the chrominance data of each pixel point in the second image with the luminance data of the corresponding pixel point in the first image to generate an original image corresponding to the image to be processed.
The image processing device provided by the embodiment of the application is configured at the second terminal, and generates the image by decoding the first coded data and the second coded data twice and then reassembling the decoding results, so that the obtained image more completely restores the original image, the transmission with higher quality is realized, and the image quality is improved.
There is also provided in an embodiment of the present application a computing device comprising a memory, a processor, and computer instructions stored on the memory and executable on the processor, the processor implementing the steps of the image processing method when executing the instructions.
An embodiment of the present application further provides a computer readable storage medium, which stores computer instructions, and when the instructions are executed by a processor, the instructions implement the steps of the image processing method as described above.
The above is an illustrative scheme of a computer-readable storage medium of the present embodiment. It should be noted that the technical solution of the storage medium belongs to the same concept as the technical solution of the image processing method, and for details that are not described in detail in the technical solution of the storage medium, reference may be made to the description of the technical solution of the image processing method.
The foregoing description of specific embodiments of the present application has been presented. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The computer instructions comprise computer program code which may be in the form of source code, object code, an executable file or some intermediate form, or the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The preferred embodiments of the present application disclosed above are intended only to aid in the explanation of the application. Alternative embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical applications, to thereby enable others skilled in the art to best understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.
Claims (13)
1. An image processing method applied to a first terminal comprises the following steps:
dividing pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data;
generating first data and second data corresponding to each pixel group according to brightness data and chrominance data of four pixels in each pixel group, wherein the first data comprises chrominance data of a target pixel point in the four pixel points in the pixel group and the four brightness data of the four pixel points, the second data comprises chrominance data of other three pixel points except the target pixel point in the four pixel points, and the target pixel point is one of the four pixel points; generating a first data group and a second data group corresponding to an image to be processed according to first data and second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed;
respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed;
and sending the first coded data and the second coded data of the image to be processed to a second terminal.
2. The image processing method of claim 1, wherein determining a target pixel point in each pixel group comprises:
selecting one pixel point in each pixel group as a target pixel point; or
And determining a target pixel point according to the label of each pixel point in each pixel group.
3. The image processing method of claim 1, wherein generating the first data group and the second data group corresponding to the image to be processed from the first data and the second data corresponding to each of the plurality of ordered pixel groups of the image to be processed comprises:
splicing the first data corresponding to each pixel group into a first data group according to the sequence of the plurality of ordered pixel groups corresponding to the image to be processed;
and splicing the second data corresponding to each pixel group into a second data group according to the sequence of the plurality of ordered pixel groups corresponding to the image to be processed.
4. The image processing method of claim 1, wherein dividing the pixel points of the image to be processed into a plurality of ordered pixel groups according to a preset division rule comprises:
sequentially sliding the pixel frames with the sizes of 1 to 4 on the image to be processed, and dividing pixel points of the image to be processed into a plurality of ordered pixel groups; or
Sequentially sliding the pixel frames with the sizes of 2 x 2 on the image to be processed, and dividing pixel points of the image to be processed into a plurality of ordered pixel groups; or
And sequentially sliding the pixel frames with the size of 4 × 1 on the image to be processed, and dividing the pixel points of the image to be processed into a plurality of ordered pixel groups.
5. The image processing method according to claim 1, wherein encoding the first data group and the second data group respectively to obtain first encoded data and second encoded data corresponding to the image to be processed comprises:
sequentially storing a plurality of first data in the first data group into a first color coding format to generate first coded data;
and sequentially storing the plurality of second data in the second data group into a second color coding format to generate second coded data.
6. An image processing method applied to a second terminal comprises the following steps:
receiving first coded data and second coded data of an image to be processed, wherein the first coded data is formed by coding a plurality of first data, the second coded data is formed by coding a plurality of second data, the first data comprises target pixel point chrominance data in four pixel points in the image to be processed and four luminance data of the four pixel points, the second data comprises chrominance data of other three pixel points except the target pixel point in the four pixel points, the pixel points of the image to be processed are divided according to a preset division rule to obtain a plurality of ordered pixel groups, each ordered pixel group comprises the four pixel points, and the target pixel point is one of the four pixel points in the ordered pixel group; decoding the first coded data to obtain a first image corresponding to the image to be processed, and decoding the second coded data to obtain a second image corresponding to the image to be processed;
and generating an original image corresponding to the image to be processed according to the first image and the second image.
7. The image processing method of claim 6, wherein decoding the first encoded data to obtain a first image corresponding to the image to be processed, and decoding the second encoded data to obtain a second image corresponding to the image to be processed, comprises:
acquiring a plurality of first data in a first color coding format corresponding to the first coded data, and acquiring a plurality of second data in a second color coding format corresponding to the second coded data;
extracting brightness data of four pixel points and chromaticity data of one pixel point in each first data, and extracting chromaticity data of three pixel points in each second data;
and generating a first image corresponding to the image to be processed according to the brightness data of four pixel points and the chrominance data of one pixel point in each first data, and generating a second image of the image to be processed according to the chrominance data of three pixel points in each second data.
8. The image processing method of claim 7, wherein generating an original image corresponding to the image to be processed from the first image and the second image comprises:
and splicing the chrominance data of each pixel point in the second image with the luminance data of the corresponding pixel point in the first image to generate an original image corresponding to the image to be processed.
9. An image processing system, characterized in that the system comprises a first terminal and a second terminal, wherein,
the first terminal is configured to divide pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset division rule, wherein each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data; generating first data and second data corresponding to each pixel group according to brightness data and chrominance data of four pixels in each pixel group, wherein the first data comprises chrominance data of a target pixel point in the four pixel points in the pixel group and the four brightness data of the four pixel points, the second data comprises chrominance data of other three pixel points except the target pixel point in the four pixel points, and the target pixel point is one of the four pixel points; generating a first data group and a second data group corresponding to an image to be processed according to first data and second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed; respectively encoding the first data group and the second data group to obtain first encoded data and second encoded data corresponding to the image to be processed; sending the first coded data and the second coded data of the image to be processed to a second terminal;
the second terminal is configured to receive first encoded data and second encoded data of an image to be processed, wherein the first encoded data is formed by encoding a plurality of first data, the second encoded data is formed by encoding a plurality of second data, the first data includes chrominance data of a target pixel point in four pixel points in the image to be processed and four luminance data of the four pixel points, the second data includes chrominance data of other three pixel points except the target pixel point in the four pixel points, the pixel points of the image to be processed are divided according to a preset division rule to obtain a plurality of ordered pixel groups, each ordered pixel group includes the four pixel points, and the target pixel point is one of the four pixel points in the ordered pixel group; decoding the first coded data to obtain a first image corresponding to the image to be processed, and decoding the second coded data to obtain a second image corresponding to the image to be processed; and generating an original image corresponding to the image to be processed according to the first image and the second image.
10. An image processing apparatus, disposed in a first terminal, includes:
the image processing device comprises a dividing module, a processing module and a processing module, wherein the dividing module is configured to divide pixel points of an image to be processed into a plurality of ordered pixel groups according to a preset dividing rule, each pixel group comprises four pixel points, and each pixel point comprises brightness data and chrominance data;
the first generation module is configured to generate first data and second data corresponding to each pixel group according to luminance data and chrominance data of four pixel points in each pixel group, wherein the first data comprises chrominance data of a target pixel point in the four pixel points in the pixel group and four luminance data of the four pixel points, the second data comprises chrominance data of other three pixel points except the target pixel point in the four pixel points, and the target pixel point is one of the four pixel points;
the second generation module is configured to generate a first data group and a second data group corresponding to the image to be processed according to the first data and the second data corresponding to each pixel group in a plurality of ordered pixel groups of the image to be processed;
the encoding module is configured to encode the first data group and the second data group respectively to obtain first encoded data and second encoded data corresponding to the image to be processed;
and the transmitting module is configured to transmit the first coded data and the second coded data of the image to be processed to a second terminal.
11. An image processing apparatus, disposed at a second terminal, comprising:
the image processing device comprises a receiving module, a processing module and a processing module, wherein the receiving module is configured to receive first coded data and second coded data of an image to be processed, the first coded data is formed by coding a plurality of first data, the second coded data is formed by coding a plurality of second data, the first data comprises target pixel point chrominance data of four pixel points in the image to be processed and four luminance data of the four pixel points, the second data comprises chrominance data of other three pixel points except the target pixel point in the four pixel points, pixel points of the image to be processed are divided according to a preset division rule to obtain a plurality of ordered pixel groups, each ordered pixel group comprises the four pixel points, and the target pixel point is one of the four pixel points in the ordered pixel group;
the decoding module is configured to decode the first coded data to obtain a first image corresponding to the image to be processed, and decode the second coded data to obtain a second image corresponding to the image to be processed;
the generating module is configured to generate an original image corresponding to the image to be processed according to the first image and the second image.
12. A computing device comprising a memory, a processor, and computer instructions stored on the memory and executable on the processor, wherein the processor implements the steps of the method of any of claims 1-5 or 6-8 when executing the instructions.
13. A computer-readable storage medium storing computer instructions, which when executed by a processor, perform the steps of the method of any one of claims 1-5 or 6-8.
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