TWI825410B - Image processing methods, devices, photographic equipment and storage media - Google Patents

Abstract

Embodiments of the present invention provide an image processing method, device, photography equipment and storage medium. The image processing method includes: collecting an initial image, the initial image corresponding to the RGB data format; dividing the initial image into a plurality of image blocks; and dividing each image in the plurality of image blocks. The image block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye chart image area The block is one or more of the plurality of image blocks; the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the target of the initial image Image data. By inverting the brightness value Y into the darkness value D, the effect of reducing the data amount of the encoded image data is achieved.

Description

Image processing methods, devices, photographic equipment and storage media

Embodiments of the present invention relate to the field of image processing technology, and in particular, to an image processing method, device, photography equipment and storage medium.

With the advancement of 5G technology and high-resolution imaging technology, there is an increasing demand for high-resolution displays.

Currently, high-resolution images are displayed by dividing the image into frames, and converting RGB data into YUV data for each image before decoding it. It is then transmitted to a display device, such as a television, for playback. Commonly used display devices all use passive light-emitting mode for display, so existing encoding methods are also set up for display devices in passive light-emitting mode. For some active light-emitting mode display devices, the encoding method of passive light-emitting mode is also used.

However, for display devices in active light-emitting mode, the encoding method of passive light-emitting mode is still used to encode each frame of the image, which results in a very large amount of encoded image data.

Embodiments of the present invention provide an image processing method, device, photography equipment, and storage medium to reduce the amount of encoded image data.

In a first aspect, embodiments of the present invention provide an image processing method, including: collecting an initial image, where the initial image corresponds to an RGB data format; Divide the initial image into multiple image blocks; convert each image block in the multiple image blocks from the RGB data format to the YUV data format, where Y is the brightness value, and UV is the chromaticity value; invert the brightness value Y of the bull's-eye chart image block, which is one or more of the plurality of image blocks, into the darkness value D; The DUV data of the image block of the image and the YUV data of the non-inverted image block are encoded to obtain the target image data of the initial image.

Optionally, the image block includes one or more primitive points, the RGB data format includes R component, G component and B component, and the YUV data format includes Y component, U component and V component, so Converting each image block in the plurality of image blocks from RGB data format to YUV data format includes: determining one or more graphic element points corresponding to each image block; according to each The R component, G component and B component of the primitive point determine the Y component of each primitive point; determine the first target primitive point among the one or more primitive points; according to the first target primitive point The R component, G component and B component determine the U component and/or V component of the first target primitive point.

Optionally, inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: inverting the brightness value Y of the bullseye chart image block into the darkness value D through a first preset formula, The first preset formula is: D=255-Y, where Y=(0.299R+0.587G+0.114B).

Optionally, inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: Obtain the average brightness value of each image block; determine the image block whose average brightness value is greater than the first preset brightness threshold as the bull's-eye chart image block; determine the target image block corresponding to the bull's-eye chart image block The brightness value Y of each primitive point is inverted into the darkness value D.

Optionally, inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: obtaining the brightness value Y of each primitive point corresponding to each image block; converting the brightness value Y to greater than The primitive point with the second preset brightness threshold is determined as the second target primitive point; the brightness value Y of the second target primitive point is inverted into the darkness value D.

Optionally, encoding the DUV data of the image block of the bull's-eye chart and the YUV data of the non-inverted image block to obtain the target image data of the initial image includes: encoding the bull's-eye chart The DUV data of the image block and the YUV data of the non-inverted image block are subjected to discrete cosine transformation to obtain the DUV data after discrete cosine transformation and the YUV data after discrete cosine transformation; the DUV data after discrete cosine transformation and The YUV data after discrete cosine transformation is encoded to obtain the target image data of the initial image.

Optionally, after encoding the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain the target image data of the initial image, the method includes: The target image data is transmitted to the display device for the display device to decode and play the target image data of the initial image.

In a second aspect, an embodiment of the present invention provides an image processing device, including: The image acquisition module is used to collect the initial image, and the initial image corresponds to the RGB data format; the division module is used to divide the initial image into multiple image blocks; the data conversion module is used Converting each image block in the plurality of image blocks from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the data conversion module is also used Invert the brightness value Y of the bullseye chart image block to the darkness value D, and the bullseye chart image block is one or more of the plurality of image blocks; an encoding module is used to convert the The DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the target image data of the initial image.

In a third aspect, embodiments of the present invention provide a photographic device, including: one or more processors; a storage device for storing one or more programs. When the one or more programs are used by the one or more The processor executes, so that the one or more processors implement the image processing method according to any embodiment of the present invention.

In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the image processing method as described in any embodiment of the present invention is implemented.

The embodiment of the present invention collects an initial image corresponding to the RGB data format; divides the initial image into multiple image blocks; and divides each image in the multiple image blocks into The block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye chart image block is Be one or more of the plurality of image blocks; encode the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain the target image of the initial image Image data solves the problem of a very large amount of image data obtained by encoding and reduces the amount of image data obtained by encoding. Effect.

S110, S120, S130, S140, S150: steps

S210, S220, S230, S240, S250, S260: steps

310:Image acquisition module

320:Divide module

330:Data conversion module

340: Encoding module

612: Photographic equipment

614:External device

616: Processor

618:Bus

620:Network interface

622:Input/output interface

624:Display

628:Storage device

630: Random access memory

632: cache memory

634:Storage system

640:Application

642:Program module

Figure 1 is a schematic flowchart of an image processing method provided in Embodiment 1 of the present invention; Figure 2 is a schematic flowchart of an image processing method provided in Embodiment 2 of the present invention; Figure 3 is an image processing device provided in Embodiment 3 of the present invention 4 is a schematic structural diagram of a photographic device provided in Embodiment 4 of the present invention.

The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for convenience of description, only some but not all structures related to the present invention are shown in the drawings.

Before discussing example embodiments in more detail, it should be mentioned that some example embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts depict steps as a sequential process, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps can be rearranged. The process may be terminated when its operations are completed, but may also have additional steps not included in the figures. Processing may correspond to methods, functions, procedures, subroutines, subroutines, and so on.

In addition, the terms "first," "second," etc. may be used herein to describe various directions, actions, steps or elements, but these directions, actions, steps or elements are not limited by these terms. These terms are only used to distinguish a first direction, act, step or element from another direction, act, step or element. For example, without departing from the scope of the present application, a first target primitive point may be referred to as a second target primitive point, and similarly, the second target primitive point may be referred to as a first target primitive point. point. The first target primitive point and the second target primitive point are both target primitive points, but they are not the same target primitive point. The terms "first", "second", etc. shall not be understood as indicating or implying relative importance or implying an indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

Embodiment 1

Figure 1 is a schematic flowchart of an image processing method provided by Embodiment 1 of the present invention, which can be applied to image processing scenarios. The method can be executed by an image processing device, and the device can adopt software and/or hardware. This method is implemented and can be integrated into photography equipment.

As shown in Figure 1, the image processing method provided by Embodiment 1 of the present invention includes:

S110. Collect an initial image, where the initial image corresponds to the RGB data format.

Among them, the initial image refers to the image that needs to be encoded. Specifically, the initial image can be each frame of multiple images that make up an image. For example, each frame of a high-resolution image can be used as the initial image in this embodiment; the initial image can also be It can be a picture, such as a landscape photo, etc. There are no specific restrictions here. In this step, the initial image corresponds to the RGB data format. RGB data format refers to the data format in RGB color mode. Specifically, any color light F can be additively mixed with three colors of R, G, and B with different components: F=r[R]+g[G]+b[B]. Among them, R, G, and B are the coefficients of the three primary colors participating in the mixing. Optionally, the initial image can be collected through a camera or other photographic equipment with image shooting function. After color separation correction, the RGB data format of each primitive point in the initial image can be obtained, that is, the RGB of each primitive point. value.

S120. Divide the initial image into multiple image blocks.

In this step, specifically, the images between multiple image blocks do not overlap with each other. Multiple image blocks refer to two or more image blocks, and the specific number of multiple image blocks is not limited. Optionally, the image sizes between multiple image blocks can be the same or different, which will not be specified here. limit. Preferably, the image sizes among the multiple image blocks are the same. For example, the initial image is 160*160 in size and divided into 20*20 blocks of 8*8. Each block has a total of 64 primitive points, and each primitive point is represented by RGB.

S130. Convert each image block in the plurality of image blocks from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value.

In this step, specifically, each image block includes one or more primitive points. The specific number of primitive points is determined according to the way of dividing the image blocks, and is not specifically limited in this embodiment.

In an optional implementation, the image block includes one or more primitive points, the RGB data format includes R component, G component and B component, and the YUV data format includes Y component, U component and V components. Converting each image block in the plurality of image blocks from the RGB data format to the YUV data format includes: determining one or more graphics elements corresponding to each image block. points; determine the Y component of each primitive point according to the R component, G component and B component of each primitive point; determine the first target primitive point among the one or more primitive points; according to the first The R component, G component and B component of a target primitive point determine the U component and/or V component of the first target primitive point.

In this embodiment, the R component, G component and B component of each primitive point can be obtained by performing color separation correction on the initial image. Then determine the Y component of each primitive point based on the R component, G component and B component of each primitive point. Optionally, the Y component of each primitive point can be calculated through Y=(0.299R+0.587G+0.114B). The first target primitive point refers to the primitive point for which the U component and/or V component needs to be calculated. Specifically, for different YUV data formats, the first target primitive point is also different. Taking the YUV420 format as an example, each primitive retains a Y (brightness) component. In the horizontal direction, instead of taking the U and V components for each row, only the U component is taken for one row, and then only the U component is taken for the next row. V component, repeat this (i.e. 4:2:0, 4:0:2, 4:2:0, 4:0:2...). Optional, can be calculated by U=-0.147R-0.289G+0.436B U component to the first target primitive point. The V component of the first target primitive point can be calculated through V=0.615R-0.515G-0.100B.

S140. Invert the brightness value Y of the bull's-eye chart image block, which is one or more of the plurality of image blocks, into the darkness value D.

The bull's-eye chart image block refers to one or more image blocks among multiple image blocks that need to invert the brightness value Y to the darkness value D. Optionally, all image blocks in the multiple image blocks can be used as bullseye chart image blocks in this embodiment, thereby inverting the brightness value Y to the darkness value D; it is also possible to convert multiple image blocks into Some of the image blocks, for example, the image blocks whose average brightness value is greater than 128 are used as bullseye chart image blocks in this embodiment, and are not specifically limited here.

Optionally, the brightness value Y of the bullseye chart image block can be inverted into the darkness value D through a first preset formula. The first preset formula is: D=255-Y, where Y=(0.299R +0.587G+0.114B). Among them, R, G, and B are the coefficients of the three primary colors participating in the mixing.

In an optional implementation, inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: obtaining the average brightness value of each image block; changing the average brightness value to be greater than The image block with the first preset brightness threshold is determined as the bull's-eye chart image block; the brightness value Y of each primitive point corresponding to the bull's-eye chart image block is inverted into a darkness value D.

In this embodiment, the average brightness value in this embodiment can be obtained by summing the brightness values Y of the primitive points corresponding to each image block. Optionally, the first preset brightness threshold is 128. In this embodiment, the brightness value Y of each primitive point of the bullseye chart image block is inverted into the darkness value D.

Specifically, the brightness value Y of the primitive points of all image blocks is inverted into the darkness value D, which can reduce the amount of data. However, the brightness value Y of some image blocks is inverted into the darkness value D, which actually improves the data. Material quantity. Therefore, the bull's-eye chart image blocks whose average brightness value is greater than the first preset brightness threshold are inverted, while the non-bull's-eye chart image blocks are not inverted, further reducing the amount of data obtained by decoding.

In another optional implementation, inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: obtaining the brightness value Y of each primitive point corresponding to each image block. ; Determine the primitive point whose brightness value Y is greater than the second preset brightness threshold as the second target primitive point; invert the brightness value Y of the second target primitive point into a darkness value D.

In this implementation, optionally, all image blocks are used as bullseye chart image blocks. The second target primitive point refers to a primitive point whose brightness value Y is greater than the second preset brightness threshold. Optionally, the second preset brightness threshold is 128. In this embodiment, the brightness value Y of the second target graphic element point is inverted into the darkness value D, and the brightness value Y of other non-second target graphic element points does not need to be inverted into the darkness value D, which further reduces Determines the amount of data obtained by decoding.

S150: Encode the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain the target image data of the initial image.

Among them, the target image data refers to the data obtained by encoding the DUV data of the bullseye chart image block in the initial image and the YUV data of the non-inverted image block. Encoding refers to the operation of compiling DUV data and YUV data into binary characters. The non-inverted image block is the image block among the plurality of image blocks except the bullseye chart image block.

In this embodiment, specifically, since most current high-resolution display devices use active light-emitting mode (dark background + highlight pattern, that is, white text on a black background) to display images, a large area is darkly displayed. In the passive light-emitting mode, the dark color display is coded as 1, and the bright color display is coded as 0. However, in the active light-emitting mode, the dark color display is coded as 0, and the bright color display is coded as 1. At this time, if you just change the entire image area When the block YUV data is encoded according to the requirements of the active light-emitting mode, it will inevitably lead to a very large amount of encoded data. In this embodiment, the brightness value Y of the bullseye chart image block is inverted into dark Degree value D, adapts to the active light-emitting mode display device for encoding, solves the problem of a very large amount of image data obtained by encoding, especially solves the problem of encoding the image data obtained by encoding the active light-emitting mode display device The problem is that the amount of data is very large. In addition, the amount of decoded image data is reduced, and the transmission efficiency to the display device for playback is improved.

In an optional implementation, after encoding the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain the target image data of the initial image, The method includes: transmitting the target image data to a display device so that the display device can decode and play the target image data of the initial image.

In this embodiment, the display device may be in an active light-emitting mode, or may be a device in which the active light-emitting mode and the passive light-emitting mode are compatible. Specifically, when all the primitive points of the initial image are inverted from the brightness value Y to the darkness value D, the display device can be a device in active light-emitting mode. The code for dark display is 0, and the code for bright display is 0. is 1. When some of the primitive points of the initial image are inverted from the brightness value Y to the dark value D, then the reversed part of the primitive points are displayed in the active light-emitting mode, that is, the dark color display is coded as 0, and the bright color display is coded as 1 ; The remaining non-inverted primitive points are displayed in passive light-emitting mode, that is, the code for dark display is 1, and the code for bright display is 0. Decoding and playback refers to the operation of decoding the target image data and then playing and displaying it.

Specifically, when the initial image is a picture, the display device can decode and play the initial image. When the initial image is each frame of multiple images that make up an image, each initial image is decoded and encoded according to the time stamp, thereby achieving complete playback of an image.

The technical solution of the embodiment of the present invention is to collect an initial image corresponding to the RGB data format; divide the initial image into a plurality of image blocks; and divide the plurality of image blocks into Each image block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye chart image area The block is one or more of the plurality of image blocks; the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the target of the initial image The image data is encoded by inverting the brightness value Y into the darkness value D and adapted to the active light-emitting mode display device, thereby achieving the technical effect of reducing the data volume of the encoded image data.

Embodiment 2

FIG. 2 is a schematic flowchart of an image processing method provided in Embodiment 2 of the present invention. This embodiment is a further refinement of the above technical solution and is suitable for scenes of image processing. The method can be executed by an image processing device, which can be implemented in software and/or hardware, and can be integrated on the photography equipment.

As shown in Figure 2, the image processing method provided by Embodiment 2 of the present invention includes:

S210. Collect an initial image, where the initial image corresponds to the RGB data format.

Among them, the initial image refers to the image that needs to be encoded.

S220. Divide the initial image into multiple image blocks.

In this step, specifically, the images between multiple image blocks do not overlap with each other. Multiple image blocks refer to two or more image blocks, and the specific number of multiple image blocks is not limited.

S230. Convert each image block in the plurality of image blocks from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chrominance value.

In this step, specifically, each image block includes one or more primitive points. The specific number of primitive points is determined according to the way of dividing the image blocks, and is not specifically limited in this embodiment.

S240. Invert the brightness value Y of the bull's-eye chart image block, which is one or more of the plurality of image blocks, into the darkness value D.

The bull's-eye chart image block refers to one or more image blocks among multiple image blocks that need to invert the brightness value Y to the darkness value D.

S250: Perform discrete cosine transform on the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block, to obtain DUV data after discrete cosine transform and YUV data after discrete cosine transform.

In this step, the discrete cosine transform is performed on the bullseye chart image block and the non-inverted image block, which refers to converting the image block from the spatial domain to the frequency domain, which is to calculate which two-dimensional cosine waves the image consists of. composition. Specifically, the discrete cosine transform discards high-frequency coefficients (AC coefficients) and retains low-frequency information (DC coefficients). High-frequency coefficients generally store the boundary and texture information of the image, while low-frequency information mainly stores flat area information in the image.

S260: Encode the DUV data after discrete cosine transformation and the YUV data after discrete cosine transformation to obtain target image data of the initial image.

In this step, the DUV data after discrete cosine transformation and the YUV data after discrete cosine transformation are encoded, thereby obtaining the target image data of the initial image.

The technical solution of the embodiment of the present invention is to collect an initial image corresponding to the RGB data format; divide the initial image into a plurality of image blocks; and divide the plurality of image blocks into Each image block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye The chart image block is one or more of the plurality of image blocks; the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the initial image By inverting the brightness value Y into the darkness value D, the target image data of the image is encoded by adapting to the active light-emitting mode display device, thereby achieving the technical effect of reducing the data volume of the encoded image data.

Embodiment 3

Figure 3 is a schematic structural diagram of an image processing device provided in Embodiment 3 of the present invention. This embodiment can be applied to image processing scenarios. The device can be implemented in software and/or hardware, and can be integrated in on photography equipment.

As shown in Figure 3, the image processing device provided by this embodiment may include an image acquisition module 310, a dividing module 320, a data conversion module 330 and an encoding module 340, wherein: the image acquisition module 310 is used for Collect an initial image, which corresponds to the RGB data format; the dividing module 320 is used to divide the initial image into multiple image blocks; the data conversion module 330 is used to convert the multiple Each image block in the image block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the data conversion module 330 is also used to convert the bullseye chart image area The brightness value Y of the block is inverted into the darkness value D, and the bull's-eye chart image block is one or more of the plurality of image blocks; the encoding module 340 is used to convert the bull's-eye chart image area The DUV data of the block and the YUV data of the non-inverted image block are encoded to obtain the target image data of the initial image.

Optionally, the image block includes one or more primitive points, the RGB data format includes R component, G component and B component, and the YUV data format includes Y component, U component and V component. The conversion module 330 includes: a primitive point determination unit, used to determine one or more primitive points corresponding to each image block; a Y component determination unit, used to determine the R component and G component of each primitive point. and B components to determine the Y component of each primitive point; a first target primitive point determination unit, used to determine the first target primitive point among the one or more primitive points; a UV component determination unit, used to The U component and/or V component of the first target primitive point is determined according to the R component, G component and B component of the first target primitive point.

Optionally, the data conversion module 330 is specifically configured to invert the brightness value Y of the bullseye chart image block into the darkness value D through a first preset formula, where the first preset formula is: D=255-Y, where Y=(0.299R+0.587G+0.114B).

Optionally, the data conversion module 330 also includes: an average brightness value acquisition unit, used to obtain the average brightness value of each image block; a bullseye chart image block determination unit, used to determine the average brightness value greater than the An image block with a preset brightness threshold is determined as the bull's-eye chart image block; a first darkness value inversion unit is used to convert the brightness value Y of each primitive point corresponding to the bull's-eye chart image block Invert to the darkness value D.

Optionally, the data conversion module 330 also includes: a brightness value Y obtaining unit, used to obtain the brightness value Y of each primitive point corresponding to each image block; a second target primitive point determination unit, using The graphic element point whose brightness value Y is greater than the second preset brightness threshold is determined as the second target graphic element point; the second degree value inversion unit is used to invert the brightness value Y of the second target graphic element point. Convert to darkness value D.

Optionally, the encoding module 340 includes: a transformation unit for performing discrete cosine transformation on the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain the DUV after discrete cosine transformation. data and YUV data after discrete cosine transform; a coding unit, used to encode the DUV data after discrete cosine transform and YUV data after discrete cosine transform, to obtain the target image data of the initial image.

Optionally, the device further includes: a transmission module for transmitting the target image data to a display device, so that the display device can decode and play the target image data of the initial image.

The image processing device provided by the embodiment of the present invention can execute the image processing method provided by any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method. Contents that are not described in detail in the embodiments of the present invention may refer to the descriptions in any method embodiments of the present invention.

Embodiment 4

Figure 4 is a schematic structural diagram of a photographic device provided in Embodiment 4 of the present invention. Figure 4 shows a block diagram of an exemplary photographic device 612 suitable for implementing embodiments of the present invention. The photography device 612 shown in FIG. 4 is only an example and should not bring any limitations to the functions and scope of use of the embodiments of the present invention.

As shown in FIG. 4 , the photographing device 612 is embodied in the form of a general photographing device. Components of the photography device 612 may include, but are not limited to: one or more processors 616, storage devices 628, and a bus 618 connecting different system components (including the storage device 628 and the processor 616).

Bus 618 represents one or more of several types of bus structures, including a storage bus or storage controller, a peripheral bus, a graphics acceleration port, a processor, or a local computer using any of a variety of bus structures. Domain bus. For example, these architectures include, but are not limited to, Industry Subversive Alliance (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (Video Electronics) Standards Association, VESA) local bus and peripheral component interconnect (Peripheral Component Interconnect, PCI) bus.

Photography device 612 typically includes a variety of computer system readable media. These media may be any available media that can be accessed by the photography device 612, including volatile and non-volatile media, removable and non-removable media.

Storage device 628 may include computer system-readable media in the form of volatile memory, such as random access memory (Random Access Memory, RAM) 630 and/or cache memory 632. Terminal 612 may further include other removable/non-removable, volatile/non-volatile computer system storage. storage media. By way of example only, storage system 634 may be used to read and write to non-removable, non-volatile magnetic media (not shown in Figure 4 and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a disk drive may be provided for reading and writing removable non-volatile magnetic disks (eg, "floppy disks"), and for removable non-volatile optical disks, such as read-only compact discs (Compact Discs). An optical disc drive that reads and writes from Read-Only Memory (CD-ROM), Digital Video Disc-Read Only Memory (DVD-ROM) or other optical media). In these cases, each drive may be connected to bus 618 through one or more data media interfaces. Storage device 628 may include at least one program product having a set of (eg, at least one) program modules configured to perform the functions of various embodiments of the invention.

An application 640 having a set (at least one) of program modules 642 may be stored, for example, in a storage device 628. Such program modules 642 include, but are not limited to, an operating system, one or more applications, other program modules, and Programming Materials Each or some combination of these examples may include an implementation of a network environment. Program modules 642 generally perform functions and/or methods in the described embodiments of the invention.

Photography device 612 may also communicate with one or more external devices 614 (eg, keyboard, pointing terminal, display 624, etc.), may also communicate with one or more terminals that enable a user to interact with the camera device 612, and/or Communicates with any terminal (eg, network card, modem, etc.) that enables the photography device 612 to communicate with one or more other computing terminals. This communication may occur through input/output (I/O) interface 622. Moreover, the photography device 612 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN)) and/or a public network, such as the Internet, through the network interface card 620 road) communication. As shown in FIG. 4 , the network interface card 620 communicates with other modules of the photography device 612 through the bus 618 . It should be understood that, although not shown in the figure, other hardware and/or software modules may be used in conjunction with the photography device 612, including but not limited to: microcode, terminal drivers, redundant processors, external disk drive arrays, disks Array (Redundant Arrays of Independent Disks, RAID) systems, tape drives and data backup storage systems, etc.

The processor 616 executes programs stored in the storage device 628 to perform various functional applications and data processing, such as implementing an image processing method provided by any embodiment of the present invention. The method may include: acquiring an initial image, the The initial image corresponds to the RGB data format; the initial image is divided into multiple image blocks; each image block in the multiple image blocks is converted from the RGB data format to the YUV data format, Wherein, Y is the brightness value, UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye chart image block is one of the plurality of image blocks. or more; encoding the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain the target image data of the initial image.

The technical solution of the embodiment of the present invention is to collect an initial image corresponding to the RGB data format; divide the initial image into a plurality of image blocks; and divide the plurality of image blocks into Each image block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye The chart image block is one or more of the plurality of image blocks; the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the initial image By inverting the brightness value Y into the darkness value D, the target image data of the image is encoded by adapting to the active light-emitting mode display device, thereby achieving the technical effect of reducing the data volume of the encoded image data.

Embodiment 5

Embodiment 5 of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, an image processing method as provided in any embodiment of the present invention is implemented. The method may include: acquisition Initial image, the initial image corresponds to the RGB data format; Divide the initial image into multiple image blocks; convert each image block in the multiple image blocks from the RGB data format to the YUV data format, where Y is the brightness value, and UV is the chromaticity value; invert the brightness value Y of the bull's-eye chart image block, which is one or more of the plurality of image blocks, into the darkness value D; The DUV data of the image block of the image and the YUV data of the non-inverted image block are encoded to obtain the target image data of the initial image.

The computer-readable storage medium in the embodiment of the present invention may be 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. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections having one or more wires, portable computer disks, hard drives, random access memory (RAM), read-only Memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact magnetic disk read-only memory (CD-ROM), optical memory, magnetic memory device, or any suitable combination of the above. In this case, a computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, device, or device.

A computer-readable signal medium may include a data signal propagating at a fundamental frequency or as part of a carrier wave carrying computer-readable program code. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate, or transmit a program for use by or in connection with an instruction execution system, device, or device .

Program code contained on a storage medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

Computer program code for performing operations of the present invention may be written in one or more programming languages, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming, or a combination thereof. Programming language - such as "C" or similar programming language. 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 Execute on terminal. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., using the Internet). Internet service provider to connect via the Internet).

The technical solution of the embodiment of the present invention is to collect an initial image corresponding to the RGB data format; divide the initial image into a plurality of image blocks; and divide the plurality of image blocks into Each image block is converted from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; the brightness value Y of the bullseye chart image block is inverted into the darkness value D, and the bullseye The chart image block is one or more of the plurality of image blocks; the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the initial image By inverting the brightness value Y into the darkness value D, the target image data of the image is encoded by adapting to the active light-emitting mode display device, thereby achieving the technical effect of reducing the amount of encoded image data obtained.

Note that the above are only the preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made to those with ordinary skill in the technical field to which the subject matter belongs without departing from the protection of the present invention. Scope. Therefore, although the present invention has been described in more detail through the above embodiments, However, the present invention is not limited to the above embodiments, and may also include more equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the appended patent application scope.

S110~S150: steps

Claims (10)

An image processing method, which includes: using an image acquisition module to collect an initial image, the initial image corresponding to the RGB data format; using a dividing module to divide the initial image into multiple image blocks; A data conversion module is used to convert each image block in the plurality of image blocks from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chromaticity value; through the data conversion module The group inverts the brightness value Y of a bull's-eye chart image block into a darkness value D, and the bull's-eye chart image block is one or more of the plurality of image blocks; using an encoding module to convert the bull's-eye chart The DUV data of the image block and the YUV data of the non-inverted image block are encoded to obtain a target image data of the initial image. The image processing method as described in claim 1, wherein the image block includes one or more primitive points, the RGB data format includes R component, G component and B component, and the YUV data format includes Y component, U component and V component, the step of converting each of the plurality of image blocks from the RGB data format to the YUV data format includes: determining one or more graphics elements corresponding to each of the image blocks. point; determine the Y component of each primitive point according to the R component, G component and B component of each primitive point; determine a first target primitive point among the one or more primitive points; according to the The R component, G component and B component of the first target primitive point determine the U component and/or V component of the first target primitive point. The image processing method as described in claim 1, wherein said inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: The brightness value Y of the bullseye chart image block is inverted into the darkness value D through a first preset formula. The first preset formula is: D=255-Y, where Y=(0.299R+0.587G+ 0.114B). The image processing method according to claim 1, wherein said inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: obtaining an average brightness value of each image block; The image block whose average brightness value is greater than a first preset brightness threshold is determined as the bull's-eye chart image block; the brightness value Y of each primitive point corresponding to the bull's-eye chart image block is inverted to dark Degree value D. The image processing method as described in claim 1, wherein inverting the brightness value Y of the bullseye chart image block into the darkness value D includes: obtaining each graphic element corresponding to each image block. The brightness value Y of the point; determine the primitive point whose brightness value Y is greater than a second preset brightness threshold as a second target primitive point; invert the brightness value Y of the second target primitive point into a darkness value D. The image processing method as described in claim 1, wherein the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the target image data of the initial image. , including: performing discrete cosine transform on the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block, to obtain the DUV data after discrete cosine transform and the YUV data after discrete cosine transform; The transformed DUV data and the discrete cosine transformed YUV data are encoded to obtain the target image data of the initial image. The image processing method as described in claim 1, wherein the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block are encoded to obtain the target image of the initial image. After the data is generated, the method includes: transmitting the target image data to a display device for the display device to decode and play the target image data of the initial image. An image processing device, which includes: an image acquisition module, used to acquire an initial image, the initial image corresponding to the RGB data format; a dividing module, used to divide the initial image into multiple images Image block; a data conversion module for converting each image block in the plurality of image blocks from the RGB data format to the YUV data format, where Y is the brightness value and UV is the chroma value. ; The data conversion module is also used to invert the brightness value Y of a bull's-eye chart image block, which is one or more of the plurality of image blocks, into a darkness value D; and An encoding module is used to encode the DUV data of the bullseye chart image block and the YUV data of the non-inverted image block to obtain a target image data of the initial image. A photographic device, which includes: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more A processor implements the image processing method described in any one of claims 1-7. A computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the image processing method described in any one of claims 1-7 is implemented.