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A method and display device for processing an input high dynamic range image

A high dynamic range, image technology, applied in image data processing, image enhancement, image analysis and other directions, can solve problems such as color distortion, contrast reduction, loss of image details, etc.

Active Publication Date: 2020-11-10
上海顺久电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and a display device for processing an input high dynamic range image, so as to solve the loss of image detail and the decrease in contrast caused by displaying an HDR image or video signal on a medium according to a method in the prior art , color distortion and other issues

Method used

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  • A method and display device for processing an input high dynamic range image
  • A method and display device for processing an input high dynamic range image
  • A method and display device for processing an input high dynamic range image

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Embodiment 1

[0047] An embodiment of the present invention provides a method for processing an input high dynamic range image. The execution subject of each step of the method may be a device for processing the input high dynamic range image. The device can be set separately or can be set In the display or the host, there is no limitation here. refer to figure 2 or image 3 As shown, the method includes the following steps:

[0048] S101 (optional), converting the nonlinear component value of each pixel into a preset linear component value.

[0049] There are many kinds of HDR standards currently used, such as HDR10, HLG, etc. Because these HDR standards use different photoelectric conversion functions, the tone mapping currently on the market cannot restore colors well. In view of this phenomenon, in order to support multiple HDR standards, the embodiment of the present invention proposes a method of firstly converting the nonlinear signal into a linear signal according to the photoel...

Embodiment 2

[0187] An embodiment of the present invention provides a display device, referring to Figure 8 As shown, including: processor 11, memory 12 and bus 13;

[0188] The memory 12 is used to store computer-executable instructions, and the processor 11 and the memory 12 are connected through the bus 13. When the display device is running, the processor 11 executes the computer-executable instructions stored in the memory 12, so that the display device performs the input of the first embodiment. A method for processing high dynamic range images.

[0189] It should be noted that the processor 11 may be, for example, a CPU, a general processor, a digital signal processor DSP, an application specific integrated circuit ASIC, an FPGA or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. T...

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Abstract

The embodiment of the present invention discloses a method for processing an inputted high dynamic range image and a display device and relates to the technical field of the display. The method and the display device are used for solving the problems of loss of image details, reduced contrast, color distortion and the like caused by the display of an HDR image or a video signal on a medium according to a method of the prior art. The method comprises a step of searching a tone mapping contrast coefficient table in each scene for a brightness value of each pixel point to obtain a tone mapping contrast coefficient of each pixel point in each scene, a step of weighting the tone mapping contrast coefficient of a same pixel point in each scene, and a step of taking the weighted tone mapping contrast coefficient as a color compensation coefficient, carrying out color compensation on each pixel point, and carrying out output.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for processing an input high dynamic range image and a display device. Background technique [0002] High-Dynamic Range (HDR) images are synthesized based on the best details corresponding to Low-Dynamic Range (LDR) images with different exposure times. HDR images can provide users with higher The picture dynamic range, dynamic contrast and scene information. [0003] Tone mapping is a computer graphics technique for approximating high dynamic range images on limited dynamic range media. In essence, tone mapping is to transform the brightness of the scene to a range that can be displayed by performing a large contrast attenuation, while maintaining image details and colors that are very important for expressing the original scene. [0004] Computers, LCD monitors, projectors, and other media can only display a limited dynamic range. That is, the displayable dynamic r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/009G06T2207/20208
Inventor 田广刘国卿
Owner 上海顺久电子科技有限公司
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