CN113420168A - Picture storage method, device, equipment and storage medium - Google Patents
Picture storage method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a picture storage method, a picture storage device, picture storage equipment and a picture storage medium. The method comprises the following steps: selecting at least two original pictures from an original picture database according to a preset selection rule to serve as a picture set to be processed; YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture; and storing each coded picture into a target storage space. According to the embodiment of the invention, the YUV coding processing is carried out on part of the pictures in the original picture database, so that the memory capacity of the original pictures is reduced, and the usable mapping capacity of a user is effectively improved.
Description
Technical Field
The embodiment of the invention relates to the field of data storage, in particular to a picture storage method, a picture storage device, picture storage equipment and a picture storage medium.
Background
With the development of technology, the memory and storage capacity of mobile devices is getting larger and larger, and game maps are also getting larger and larger. The large-size pasters bring clearer picture effect, a large number of pasters bring rich expression, and meanwhile, more artistic expression contents are brought to games. In the field of mobile GPU, the video memory can achieve the super-large capacity of G, and theoretically does not become a bottleneck any more. However, the bandwidth problem of the mobile GPU is still very small, so that the developer still faces the problem that the total amount of the single rendering map cannot be too large when rendering the image.
Disclosure of Invention
In view of this, the present invention provides a picture storage method, apparatus, device and storage medium, which reduce the picture memory capacity and thus increase the available mapping capacity for users.
In a first aspect, an embodiment of the present invention provides a picture storage method, including:
selecting at least two original pictures from an original picture database according to a preset selection rule to serve as a picture set to be processed;
YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture;
and storing each coded picture into a target storage space.
In a second aspect, an embodiment of the present invention further provides a picture storage device, including:
the selection module is used for selecting at least two original pictures from the original picture database according to a preset selection rule to serve as a picture set to be processed;
the encoding module is used for carrying out YUV encoding on each original picture in the picture set to be processed to obtain a corresponding encoded picture;
and the storage module is used for storing each coded picture to a target storage space.
In a third aspect, an embodiment of the present invention further provides a picture storage device, where the picture storage device includes: a memory, and one or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the picture storage method according to any of the embodiments.
In a fourth aspect, a computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements a picture storage method as in any of the above embodiments.
The invention discloses a picture storage method, which comprises the following steps: selecting at least two original pictures from an original picture database according to a preset selection rule to serve as a picture set to be processed; YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture; and storing each coded picture into a target storage space. According to the embodiment of the invention, the YUV coding processing is carried out on part of the pictures in the original picture database, so that the memory capacity of the original pictures is reduced, and the usable mapping capacity of a user is effectively improved.
Drawings
Fig. 1 is a flowchart of a picture storage method according to an embodiment of the present invention;
FIG. 2 is a flowchart of another method for storing pictures according to an embodiment of the present invention;
fig. 3 is a flowchart of another picture storage method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of the present invention for converting RGB into YCrCb;
fig. 5 is a schematic diagram of a display of YUV420 encoding according to an embodiment of the present invention;
FIG. 6 is a block diagram of a picture storage device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a hardware structure of a picture storage device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In an embodiment, fig. 1 is a flowchart of a picture storage method according to an embodiment of the present invention, and this embodiment is applicable to a case of performing encoding processing on a picture. This embodiment may be performed by a picture storage device. The picture storage device may be a terminal device having an image processing function. Illustratively, the picture storage device may be a computer device. As shown in fig. 1, the present embodiment includes the following steps:
s110, selecting at least two original pictures from the original picture database according to a preset selection rule to serve as a picture set to be processed.
The preset selection rule is used for selecting a plurality of rules of the pictures from the original picture database. In an embodiment, the preset selection rule may be configured from different dimensions. For example, the preset selection rule may be configured from a dimension of a memory capacity of the picture, or may be configured from a dimension of a display time of the picture, which is not limited herein. Exemplarily, when configuring from a picture memory capacity dimension, pre-configuring a preset memory capacity threshold, comparing the current memory capacity of an original picture with the preset memory capacity threshold, and regularly selecting a plurality of original pictures from an original picture database according to a comparison result to serve as a to-be-processed picture set; when the configuration is carried out from the image display time dimension, a plurality of original images can be continuously selected from the original image database to be used as a to-be-processed image set; or selecting a plurality of original pictures from the original picture database at intervals to be used as a picture set to be processed.
Wherein, the original picture refers to an unprocessed original picture. Illustratively, the original picture may be in RGB format.
And S120, carrying out YUV coding on each original picture in the picture set to be processed to obtain a corresponding coded picture.
In an embodiment, each original picture is converted from an RGB format into a picture in YCrCb color space, then the picture in YCrCb color space is YUV encoded to retain complete Y data, and using half-size CbCr data, the complete Y data will be retained, and the picture using half-size CbCr data will be used as the corresponding encoded picture for each original picture.
And S130, storing each coded picture into a target storage space.
The target storage space refers to a certain storage position in the picture storage device. For example, the target storage space may be a certain location in a memory of the picture storage device, or may be an online server associated with the picture storage device, which is not limited in this respect.
According to the technical scheme in the embodiment, at least two original pictures are selected from an original picture database according to a preset selection rule to serve as a picture set to be processed; YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture; and storing each coded picture into a target storage space. According to the embodiment of the invention, the YUV coding processing is carried out on part of the pictures in the original picture database, so that the memory capacity of the original pictures is reduced, and the usable mapping capacity of a user is effectively improved.
In an embodiment, fig. 2 is a flowchart of another picture storage method according to an embodiment of the present invention. This embodiment is further described with respect to the process of storing pictures on the basis of the above-described embodiment. As shown in fig. 2, the picture storage method in this embodiment includes the following steps:
s210, selecting at least two original pictures from the original picture database according to a preset selection rule to serve as a picture set to be processed.
Wherein, S210 includes the following three implementation manners:
the first method is as follows: s210 includes: determining a picture selection interval corresponding to an original picture; and selecting at least two original pictures from the original picture database at intervals at picture selection intervals to serve as a picture set to be processed.
The picture selection interval refers to an interval for selecting an original picture from an original picture database, namely the time interval of the picture to be processed in the original picture database. Illustratively, the picture selection interval may be set by time intervals, or by the number of pictures. If the picture selection interval is determined according to the interval duration, selecting an original picture at intervals of preset duration; if the picture selection interval is determined according to the number of the pictures at intervals, selecting one original picture at intervals of a preset number of original pictures. And after at least two original pictures are selected from the original picture database, taking the selected original pictures as a picture set to be processed.
The second method comprises the following steps: s210 includes: segmenting all original pictures in an original picture database to obtain at least two segmented original picture sets; and taking at least one segmented original picture set as a picture set to be processed.
In the embodiment, all original pictures in the original picture database are segmented according to the preset number of pictures to obtain at least two segmented original picture sets. Illustratively, the number of the preset pictures is 10, that is, each continuous 10 original pictures are taken as a segmented original picture set; at least one segmented original picture set is then selected as the set of pictures to be processed. Of course, all the original pictures in the original picture database may also be segmented according to a preset picture duration, for example, the preset picture duration is 3 seconds(s), that is, the original pictures appearing in every continuous 3s are taken as a segmented original picture set, and then at least one segmented picture set is selected as a to-be-processed picture set.
The third method comprises the following steps: s210 includes: acquiring the current memory capacity of each original picture in an original picture database; identifying and extracting all original pictures with the current memory capacity larger than a preset memory capacity threshold; and taking all original pictures as a picture set to be processed.
The preset memory capacity threshold value may be determined according to an experience value of a developer. In the embodiment, the current memory capacity of each original picture is obtained, and the current memory capacity is compared with a preset memory capacity threshold value to obtain a comparison result; if the current content capacity of the original picture is larger than a preset memory capacity threshold value, listing the original picture into a picture set to be processed; otherwise, if the current content capacity of the original picture is smaller than the preset memory capacity threshold, the original picture is not coded.
S220, reserving Y data of pixels corresponding to each picture in the picture set to be processed.
And S230, selecting and reserving the U data and the V data of the pixel corresponding to each picture in the picture set to be processed to obtain a corresponding coded picture.
In an embodiment, the complete Y data is retained for each picture in the set of pictures to be processed, but only half-size U data and V data are used to obtain the corresponding encoded picture.
The execution sequence between S220 and S230 is not limited, and may be executed simultaneously or sequentially.
And S240, packing and compressing each coded picture in an RGB color combination mode or a micro PRB mode to store the coded picture in a target storage space.
In an embodiment, when 4 color pictures need to be accessed at one time (for example, terrain rendering in a game interface), the coded pictures are packaged in an RGB color combination mode; for PBR rendering, the coded pictures are packed in a mini PRB mode.
And S250, rendering each coded picture to the current game interface.
In the embodiment, after YUV coding is carried out on the original picture to obtain the coded picture, each coded picture is rendered to the current game interface, so that the total capacity of the picture is reduced on the basis of ensuring that the image quality of the game picture can be accepted, and the available chartlet capacity of a user is effectively improved.
In an embodiment, fig. 3 is a flowchart of another image storage method according to an embodiment of the present invention. In this embodiment, the process of picture coding and picture storage is described by taking an original picture as an example.
As shown in fig. 3, the picture storing process in this embodiment includes the following steps:
s310, converting the mapping from the RGB color space to the YCrCb color space to obtain the YCrCb picture.
Fig. 4 is a schematic diagram illustrating RGB conversion into YCrCb according to an embodiment of the present invention. In an embodiment, RGB is converted into YCrCb format according to the conversion formula from RGB to YCrCb; similarly, YCrCb is converted to RGB format according to the YCrCb to RGB conversion formula.
Wherein, the conversion formula from RGB to YCrCb is as follows:
Y’＝0+(0.299·R’D)+(0.587·G’D)+(0.114·B’D)
CB＝128-(0.168736·R’D)+(0.331264·G’D)+(0.5·B’D)
CR＝128+(0.5·R’D)+(0.418688·G’D)+(0.081312·B’D)
the conversion formula of YCrCb to RGB is:
R’D＝Y’+1.402·(CR-128)
G’D＝Y’-0.344136·(CB-128)-0.714136·(CR-128)
B’D＝Y’+1.772·(CB-128)
and S320, carrying out YUV420 coding on the YCrCb picture to obtain a coded picture.
Exemplarily, fig. 5 is a display diagram of YUV420 coding according to an embodiment of the present invention, and as shown in fig. 5, YUV420 coding is adopted, that is, complete Y (luminance) data is retained, but only half-size CbCr data is used. This makes the total capacity of picture data under YUV420 coding half of that under RGB coding.
This approach is used because the human eye senses luminance significantly more than color, so using the YCbCr color encoding format, luminance is separated from color data, and using the YUV420 encoding format, the full precision of luminance (Y) is preserved, but the precision of color (CrCb) data is sacrificed.
And S330, storing the coded picture into a map file.
Since the size of Y data is different from that of uv (crcb) data, and the ASTC format used in the field of mobile GPUs is optimized to store 4-channel data, it is necessary to store an original picture into multiple pictures. In the embodiment, the packing processing is performed on a plurality of pictures in the following two data packing forms.
Firstly, a first data packing mode is as follows: four color combination modes:
wherein, the original data is 4 RGB color format chartlets;
the total capacity is: average 12 bytes per pixel;
packaging format: 1 full-size 4-channel picture stores Y data of 4 pictures, and 2 half-size 4-channel pictures stores U (Cr) and V (Cb) of 4 pictures;
total capacity: average 6 bytes per pixel
The packaging method is very suitable for the case that 4 color pictures need to be accessed at one time, such as terrain rendering.
Secondly, a data packaging mode II: mini PBR mode:
raw data: color (RGB), normal (RGB), degree of metallization (Y), roughness (Y);
total capacity: average 8 bytes per pixel;
packaging format: a full-size 4-channel saves Y and normal; a half-size 4-channel is used for storing UV, metal degree and roughness;
total capacity: average 5 bytes per pixel
The packaging mode sacrifices color and accuracy of metal degree and roughness, but acquires 4 attributes at one time, and is very efficient for PBR rendering.
In an embodiment, fig. 6 is a block diagram of a picture storage apparatus according to an embodiment of the present invention, where the apparatus is suitable for use in a case where a picture is encoded, and the apparatus may be implemented by hardware/software. As shown in fig. 6, the apparatus includes: a selecting module 610, an encoding module 620 and a storing module 630.
The selecting module 610 is configured to select at least two original pictures from an original picture database according to a preset selecting rule, and use the selected at least two original pictures as a to-be-processed picture set;
the encoding module 620 is configured to perform YUV encoding on each original picture in the picture set to be processed to obtain a corresponding encoded picture;
and a storage module 630, configured to store each coded picture in the target storage space. According to the technical scheme of the embodiment, the YUV encoding processing is carried out on part of the pictures in the original picture database, so that the memory capacity of the original pictures is reduced, and the usable mapping capacity of a user is effectively improved.
On the basis of the above embodiment, the picture storage device further includes:
and the rendering module is used for rendering each coded picture to the current game interface. On the basis of the above embodiment, the selecting module includes:
the first determining unit is used for determining the picture selection interval corresponding to the original picture;
and the selecting unit is used for selecting at least two original pictures from the original picture database at intervals at picture selecting intervals to be used as a picture set to be processed.
On the basis of the above embodiment, the selecting module includes:
the segmentation unit is used for segmenting all original pictures in the original picture database to obtain at least two segmented original picture sets;
and the second determining unit is used for taking at least one segmented original picture set as a picture set to be processed.
On the basis of the above embodiment, the selecting module includes:
the acquisition unit is used for acquiring the current memory capacity of each original picture in the original picture database;
the identification and extraction unit is used for identifying and extracting all original pictures with the current memory capacity larger than a preset memory capacity threshold;
and the third determining unit is used for taking all the original pictures as the picture set to be processed.
On the basis of the foregoing embodiment, the encoding module is specifically configured to: reserving Y data of pixels corresponding to each picture in the picture set to be processed;
and selecting and reserving the U data and the V data of the pixel corresponding to each picture in the picture set to be processed to obtain the corresponding coded picture.
On the basis of the foregoing embodiment, the storage module is specifically configured to: and packing and compressing each coded picture in an RGB color combination mode or a micro PRB mode so as to store the coded picture in a target storage space.
The image storage device can execute the image storage method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the image storage method.
Fig. 7 is a schematic diagram of a hardware structure of a picture storage device according to an embodiment of the present invention. The device in the embodiment of the present invention is described by taking a computer device as an example. As shown in fig. 7, a computer device provided in an embodiment of the present invention includes: a processor 710, a memory 720, an input device 730, and an output device 740. The processor 710 in the computer device may be one or more, one processor 710 is illustrated in fig. 7, the processor 710, the memory 720, the input device 730, the output device 740, and the communication module 750 in the computer device may be connected by a bus or other means, and the processor 710, the memory 720, the input device 730, the output device 740, and the communication module 750 in fig. 7 are illustrated as being connected by a bus.
The memory 720 of the computer device, which is a computer-readable storage medium, can be used to store one or more programs, which may be software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the picture storage method (e.g., modules in the picture storage apparatus shown in fig. 5, including the selecting module 510, the encoding module 520, and the storing module 530) according to the embodiment of the present invention. The processor 510 executes various functional applications and data processing of the computer device by executing the software programs, instructions and modules stored in the memory 520, namely, implements the picture storage method in the above method embodiments.
The memory 720 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory 720 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 720 may further include memory located remotely from the processor 710, which may be connected to devices over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 730 may be used to receive numeric or character information input by a user to generate key signal inputs related to user settings and function control of the terminal apparatus. The output device 740 may include a display device such as a display screen.
And, when the one or more programs included in the computer device are executed by the one or more processors 710, the programs perform the following operations: selecting at least two original pictures from an original picture database according to a preset selection rule to serve as a picture set to be processed; YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture; and storing each coded picture into a target storage space.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a picture storage method provided in an embodiment of the present invention, where the method includes: selecting at least two original pictures from an original picture database according to a preset selection rule to serve as a picture set to be processed; YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture; and storing each coded picture into a target storage space.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM or flash Memory), an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A picture storage method, comprising:
selecting at least two original pictures from an original picture database according to a preset selection rule to serve as a picture set to be processed;
YUV coding is carried out on each original picture in the picture set to be processed to obtain a corresponding coded picture;
and storing each coded picture into a target storage space.
2. The method of claim 1, further comprising:
and rendering each coded picture to the current game interface.
3. The method according to claim 1, wherein the selecting at least two original pictures from the original picture database according to a preset selection rule as the to-be-processed picture set comprises:
determining a picture selection interval corresponding to an original picture;
and selecting at least two original pictures from the original picture database at intervals at the picture selection interval to be used as a picture set to be processed.
4. The method according to claim 1, wherein the selecting at least two original pictures from the original picture database according to a preset selection rule as the to-be-processed picture set comprises:
segmenting all original pictures in the original picture database to obtain at least two segmented original picture sets;
and taking at least one segmented original picture set as a picture set to be processed.
5. The method according to claim 1, wherein the selecting at least two original pictures from the original picture database according to a preset selection rule as the to-be-processed picture set comprises:
acquiring the current memory capacity of each original picture in an original picture database;
identifying and extracting all original pictures of which the current memory capacity is larger than a preset memory capacity threshold;
and taking all original pictures as a picture set to be processed.
6. The method according to claim 1, wherein YUV encoding each original picture in the to-be-processed picture set to obtain a corresponding encoded picture comprises:
reserving Y data of pixels corresponding to each picture in the picture set to be processed;
and selecting and reserving the U data and the V data of the pixel corresponding to each picture in the picture set to be processed to obtain a corresponding coded picture.
7. The method of claim 1, wherein storing each of the encoded pictures in a target storage space comprises:
and packing and compressing each coded picture in an RGB color combination mode or a micro PRB mode so as to store the coded picture in a target storage space.
8. A picture storage device, comprising:
the selection module is used for selecting at least two original pictures from the original picture database according to a preset selection rule to serve as a picture set to be processed;
the encoding module is used for carrying out YUV encoding on each original picture in the picture set to be processed to obtain a corresponding encoded picture;
and the storage module is used for storing each coded picture to a target storage space.
9. A picture storage device, characterized in that the device comprises: a memory, and one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the picture storage method as claimed in any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the picture storage method according to any one of claims 1 to 7.
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| US20160277492A1 (en) * | 2015-03-16 | 2016-09-22 | International Business Machines Corporation | Image file transmission |
| CN109840058A (en) * | 2019-01-07 | 2019-06-04 | 烽火通信科技股份有限公司 | Cloud game collecting method and system |
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