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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

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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

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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

Embodiments of the present invention disclose a method and a display device for processing input high dynamic range images, which relate to the field of display technology and are used to solve the problem of images caused by displaying HDR images or video signals on media according to the methods of the prior art. Problems such as loss of detail, decreased contrast, and color distortion. The method includes: for the brightness value of each pixel, search the tone mapping contrast coefficient table in each scene to obtain the tone mapping contrast coefficient of each pixel in each scene; to obtain the tone mapping contrast coefficient of the same pixel in each scene. The mapping contrast coefficient is weighted; the weighted tone mapping contrast coefficient is used as the color compensation coefficient, and color compensation is performed on each pixel and 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
CPCG06T2207/20208G06T5/92
Inventor 田广刘国卿
Owner 上海顺久电子科技有限公司
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