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Adaptive format conversion method based on high dynamic range video

A dynamic range and self-adaptive technology, applied in the field of video coding, can solve problems such as difficult to solve compatibility problems, poor user experience, single display mode, etc., to achieve the effect of facilitating user operation and solving compatibility problems

Active Publication Date: 2017-05-31
HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
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Problems solved by technology

[0003] Since SDR video has a large market scope for low-cost image video, and HDR video is used more and more in high-definition video and large TV stations and film companies, therefore, for a long time, TV program sources will exist. The phenomenon of the coexistence of the two formats, and the reason for the decoding unit of the terminal display device, its display mode has a single characteristic, cannot meet the needs of displaying SDR video and HDR video at the same time, and there must be difficult compatibility problems between the two
In addition, when HDR TVs play videos in different formats, different image parameters need to be set to achieve the best viewing effect, and most TVs do not support smart settings, so users need to manually set them according to the format of the program source. poor

Method used

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Embodiment Construction

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments.

[0061] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0062] Existing video encoding for video transmission of TV programs mainly includes two types, one is SDR (Standard Dynamic Range) encoding, and the color gamut standard adopted is BT.709, which will cause highlight overflow and highlight details to be lost, so as to ensure The exposure of the dark part is normal, or the dark part i...

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Abstract

The invention relates to an adaptive format conversion method based on high dynamic range video, comprising: acquiring parameters or user-defined parameters of a terminal display device through EDID (extended display identification data); setting a converter at the terminal display device to perform signal type conversion or video image processing on program signals, or setting an encoder at a server to re-encode the program signals so that the signals adapt to the terminal display device; receiving, by the terminal display device, a video file, or decoding, by the terminal display device, video bit streaming or the video file. The compatibility problem between HDR (high dynamic range) video and / or SDR (standard dynamic range) video program sources of different formats and different display devices is well solved, processing may be performed according to user-defined parameters, the program sources of different formats may also be adaptively displayed on different display devices in optimal state, steps for the display devices to set different parameters according to the different program sources are omitted, and operation is more facilitated for a user.

Description

technical field [0001] The invention relates to the technical field of video coding, in particular to a method for adaptive format conversion based on high dynamic range video. Background technique [0002] HDR (High Dynamic Range, high dynamic range) video can provide more image details and dynamic range than SDR (Standard Dynamic Range, standard dynamic range) video. With the development of HDR technology and the gradual popularization of HDR displays, the EOTF (Electro-Optical Transfer Function) for HDR displays is gradually introduced, such as SMPTE ST 2084 and ARIB STD-B67, among which the SMPTE ST 2084 standard A conversion curve based on PQ (Perceptual Quantization) is defined, and the highest brightness that can be represented reaches 10,000 nits (nits). The HLG (Hybrid Log-Gamma, hybrid logarithmic gamma) curve is defined in the ARIB STD-B67 standard , the maximum brightness that can be represented reaches 4000-5000 nits, while the maximum brightness that can be re...

Claims

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Application Information

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IPC IPC(8): H04N19/40G09G5/00
CPCG09G5/005H04N19/40
Inventor 王建伟黄进廖义
Owner HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
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