Display precision adjustment method and device, terminal equipment and storage medium
An adjustment method and display terminal technology, applied in the field of video processing, can solve the problems of low video display accuracy, low utilization rate of video bit depth, and failure to achieve display accuracy, etc., to achieve the effect of improving display accuracy and presenting fine and layered colors
Active Publication Date: 2021-02-09
SHENZHEN TCL DIGITAL TECH CO LTD
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Therefore, for a bit depth of 10Bit, the brightness represented by the data segment of the mapping code value 768 to 1023 is 1000Nit, so that when playing HDR10 standard video, the display accuracy of the full range of bit depth is not achieved. For the maximum brightness of 1000Nit For film sources, the accuracy is about 75% of the full range. For film sources with a maximum brightness of 4000Nit, the accuracy is about 90% of the full range. It can be seen that the utilization rate of video bit depth is low, resulting in low video display accuracy.
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[0040] It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
[0041] The main solution of the embodiment of the present application is to receive the video data sent by the user terminal, and determine the corresponding video metadata based on the video data, wherein the video metadata includes video brightness coding and full range identification; if the full range identification and preset If the logo matches, the brightness decoding corresponding to the display terminal is converted into full-range decoding; based on the full-range decoding, each video brightness code is decoded to obtain the video brightness value corresponding to each video brightness code, and each Video luminance values are tone-mapped. It can be seen from this that, in the process of tone mapping in the embodiment of the present application, if it is determined that the full-range flag matches the ...
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The invention discloses a display precision adjustment method and device, terminal equipment and a storage medium, and the method comprises the steps: receiving video data transmitted by a user terminal, determining corresponding video metadata based on the video data, wherein video metadata comprises a video brightness code and a full-range identifier; if determining that the full-range identifier matches the preset identifier, converting brightness decoding corresponding to the display terminal into full-range decoding; and decoding each video brightness code based on full-range decoding toobtain a video brightness value corresponding to each video brightness code, and performing tone mapping on each video brightness value according to a brightness peak value corresponding to the display terminal. Therefore, if the full-range identifier matches the preset identifier, the brightness decoding is full-range decoding, no matter what maximum brightness in video data is, the video brightness coding is performed according to the full-range decoding, the full-range video brightness value is obtained, and display precision of video data is improved.
Description
technical field [0001] The present application relates to the technical field of video processing, and in particular to a display precision adjustment method, device, terminal equipment and storage medium. Background technique [0002] With the wide application of HDR (High-Dynamic Range, high dynamic range) display devices, HDR technology has become a development hotspot, and the most widely used HDR technology at present is HDR10 technology. [0003] Bit (bit depth) in HDR technology indicates the fineness of color gradients. For dynamic range, the HDR10 standard defines that the bit depth must be above 10Bit, that is, it supports at least 1024 levels of brightness. HDR10 is an absolute brightness standard, and the brightness value ranges from 0Nit (Nit) to 10000Nit. For 10Bit bit depth, electro-optical conversion is performed according to PQ-EOTF (Electro-Optical Transfer Function, electro-optical transfer function), that is, the mapping code value 1023 corresponds to 10...
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Login to View More IPC IPC(8): H04N9/77H04N21/44H04N21/485
CPCH04N9/77H04N21/44H04N21/4854
Inventor 王振亮
Owner SHENZHEN TCL DIGITAL TECH CO LTD