Image processing method and device

An image processing and target image technology, applied in image data processing, image coding, instruments, etc., can solve problems such as complex implementation process, many table contents, and large space occupation

Pending Publication Date: 2021-04-09
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The embodiment of the present invention provides an image processing method and device to at least solve the problems in the related art that at least nine lookup LUT tables are required for switching from HLG to PQ, and the contents of the tables are large, and the implementation process is complicated and takes up a large space.

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Embodiment 1

[0073]The method embodiment of the present application embodiment can be performed in a mobile terminal, a computer terminal, or a similar computing device. Take it in the mobile terminal,figure 2 It is a hardware structure block diagram of a mobile terminal of an image processing method according to an embodiment of the present invention, such asfigure 2 As shown, the mobile terminal 10 can include one or more (figure 2 Only one) processor 102 (processor 102 can include, but not limited to, microprocessor MCU or processing means for storing data, optionally, the mobile terminal also A transmission device 106 and an input output device 108 may be included for communication functions. One of ordinary skill in the art will appreciate thatfigure 2 The structure shown is only schematic, and does not limit the structure of the mobile terminal described above. For example, mobile terminal 10 can also include ratiofigure 2 More or fewer components shown in, or havefigure 2 Different config...

Embodiment 2

[0126]In this embodiment, an image processing apparatus is also provided for implementing the above-described embodiments and preferred embodiments, and will not be described later. As used herein, the term "module" can achieve a combination of software and / or hardware of a predetermined function. Although the apparatus described below is preferably implemented in software, the implementation of hardware, or combinations of software and hardware may also be conceived.

[0127]Figure 6A block diagram of an image processing apparatus according to an embodiment of the present invention, such asFigure 6As shown, including:

[0128]The first acquisition module 62 is used to acquire the RGB value of the log gamma distribution HLG electrical signal of the target image, wherein the HLG electrical signal is obtained by the pixel value of the target image is obtained by HLG photoelectric conversion;

[0129]The second acquisition module 64 is used to obtain the RGB value of the RGB value correspondi...

Embodiment 3

[0155]Embodiments of the present invention also provide a computer readable storage medium, which stores a computer program in which the computer program is set to run the step of performing the above method embodiment.

[0156]Alternatively, in the present embodiment, the storage medium can be set to store a computer program for performing the following steps:

[0157]S11, the RGB value of the log gamma distribution HLG electrical signal is obtained in the target image, wherein the HLG electrical signal is obtained by the pixel value of the target image is obtained by HLG photoelectric conversion;

[0158]S12, the RGB value encoded by the RGB value corresponding to the HLG signal is obtained by pre-stored three-dimensional lookup table, wherein the RGB value of the HLG electrical signal is stored in the three-dimensional lookup table and the PQ electrical signal. RGB value mapping;

[0159]S13, the RGB value of the PQ electrical signal is transmitted to the target display device, wherein the t...

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Abstract

The invention provides an image processing method and device. The method comprises the steps: obtaining an RGB value of a logarithm gamma distribution HLG electric signal of a target image; obtaining an RGB value of a perceptual quantization coding PQ electric signal corresponding to the RGB value of the HLG signal through a pre-stored three-dimensional lookup table, the three-dimensional lookup table storing a mapping relationship between the RGB value of the HLG electric signal and the RGB value of the PQ electric signal; sending the RGB value of the PQ electric signal to a target display device, wherein the target display device is used for converting the RGB value of the PQ electric signal into the RGB value of the first optical signal and displaying the target image according to the RGB value of the first optical signal, conversion from HLG to PQ can be achieved through a three-dimensional lookup table, implementation complexity is greatly reduced, and occupied memory is reduced. The problems that at least nine LUT tables need to be searched for from HLG to PQ, the content of the tables is large, the implementation process is complex, and the occupied space is large in the prior art can be solved.

Description

Technical field[0001]The present invention relates to the field of mobile communications, and in particular, to an image processing method and apparatus.Background technique[0002]HDR, full name High Dynamic Range, high dynamic range. The so-called dynamic range is a very wide professional noun, which is generally a ratio between the maximum and minimum values ​​of a variable signal, and most of them refer to sound and light signals. In the field of video display, for a dynamic range of a display device, it can basically expresses the transition range between the brightestness and the secret. Popular, HDR can expand the brightness range displayed, showing more bright and dark partial details, bringing more colorful color and more dynamic details to make the TV picture.[0003]In the past, due to the dynamic range in the image production process, even if you entered the stage of HD video production, the magnitude of the dynamic range was only stayed between 10-2-102nit, and the human ey...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T9/00
CPCG06T9/007
Inventor 刘欣孔德辉艾吉松王宁徐科朱方游晶
Owner SANECHIPS TECH CO LTD
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