Method for processing input high dynamic range images and display device
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A high dynamic range, image technology, applied in image data processing, image enhancement, image analysis, etc., can solve the problems of image detail loss, contrast drop, color distortion, etc.
Active Publication Date: 2018-06-01
上海顺久电子科技有限公司
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[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 d...
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Embodiment 1
[0035] 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 an 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 image 3 or Figure 4 As shown, the method includes the following steps:
[0036] S101 (optional), converting an image in a color space composed of three primary colors into an image in a color space composed of brightness and chroma.
[0037]As we all know, the color of a pixel is determined by the three primary color components. For example, if a pixel contains three sub-pixels of red (R), green (G), and blue (B), then the three primary color components are R value, G value, and B value respectively. For another example, if a pixel contains three sub-pixels of cyan (C), magenta (M), and yellow (Y), then the three primary color componen...
Embodiment 2
[0176] An embodiment of the present invention provides a display device, referring to Figure 9 As shown, including: processor 11, memory 12 and bus 13;
[0177] 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.
[0178] 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 invention discloses a method for processing input high dynamic range images and a display device, and relates to the technical field of display, so as to solve the problems of loss of image details, contrast reduction, color distortion due to displaying HDR images and video signals on a medium in the prior art. The method comprises the steps of respectively searching for a tone mapping table in each scene according to the brightness value of each pixel point, so as to obtain the tone mapping value of each pixel point brightness value in each scene; wherein the tone mapping table is preset according to the ratio of the tone mapping value interval corresponding to the first preset brightness interval in each scene to the total tone mapping value interval is larger thanthe ratio of the first preset brightness interval to the total brightness interval; each first preset brightness interval is not overlapped with each other and forms a total brightness interval; weighting the tone mapping values of the same brightness value under each scene so as to obtain a weighted brightness value; and carrying out color compensation corresponding to the weighted brightness value on the chromatic value of the same pixel point.
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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