Method for improving viewing experience of high dynamic range video

A high dynamic range, video technology, used in color TV components, TV system components, digital video signal modification and other directions, can solve problems such as reducing the viewing experience of HDR video, and achieve the effect of improving the viewing experience and reducing discomfort.

Active Publication Date: 2017-05-10
HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some extreme cases, the flash caused by excessive brightness changes will caus

Method used

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  • Method for improving viewing experience of high dynamic range video
  • Method for improving viewing experience of high dynamic range video
  • Method for improving viewing experience of high dynamic range video

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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below.

[0038] The present invention provides a method for improving the viewing experience of high dynamic range video, which is mainly an HDR video playback method. By detecting the large-scale fluctuation of brightness when the program is switched or the scene is switched, the brightness of the picture is dynamically smoothed, and the brightness is relatively small. The intention of content creators is preserved to a large extent, thereby improving people's visual experience of watching HDR videos.

[0039] In the description of specific embodiments of the present invention, the HDR signal using the PQ curve for EOTF is called PQ_HDR, and the HDR signal using the HLG curve is called HLG_HDR.

[0040] Specifically, the present invention comprises the following steps:

[0041] Buffer the video stream to be broadcast, and detect the file switching / scene switching frames existing in the buffered video queue (...

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Abstract

The invention discloses a method for improving viewing experience of a high dynamic range video. Through detecting large-scale fluctuation of brightness during program switching or scene switching, dynamic smoothing of the brightness can be carried out on a picture when the HDR video has scene switching, so that the discomfort of eyes, which is caused by the large-scale fluctuation of the brightness, is relieved, and furthermore, differential brightness adjustment is carried out on light and dark regions of the picture simultaneously, so that the creation intention of a content creator is reserved in spatial domain and time domain to a greater extent, and thus the viewing experience of people about the HDR video can be greatly improved.

Description

technical field [0001] The invention relates to a method for improving viewing experience of high dynamic range video. Background technique [0002] A high dynamic range (High Dynamic Range, hereinafter referred to as HDR) video can provide more image details and dynamic range than the current standard dynamic range (Standard Dynamic Range, hereinafter referred to as SDR) video. [0003] With the development of HDR technology and the gradual popularization of HDR displays, the electro-optical transfer function standard (Electro-Optical Transfer Function, hereinafter referred to as EOTF) for HDR displays is gradually introduced, such as SMPTE ST2084 and ARIB STD-B67. Among them, the SMPTE ST 2084 standard defines a conversion curve based on perceptual quantization (Perceptual Quantization, hereinafter referred to as PQ), and the highest brightness that can be represented reaches 10,000 nits (nits or cd / m^2). The ARIB STD-B67 standard defines a Hybrid Log-Gamma (Hybrid Log-Ga...

Claims

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Application Information

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IPC IPC(8): H04N5/20H04N9/67H04N21/422H04N21/431G06F3/14G09G5/00G09G5/02G09G5/10
CPCG06F3/1454G09G5/005G09G5/02G09G5/10H04N5/20H04N9/67H04N19/102H04N19/137H04N19/14H04N19/172H04N19/177H04N21/42202H04N21/4318
Inventor 王建伟黄进廖义
Owner HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
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