Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A format conversion method for high dynamic range video

A high dynamic range, format conversion technology, applied in digital video signal modification, color signal processing circuit, selective content distribution, etc., to achieve the effect of good image beauty and fidelity

Active Publication Date: 2020-12-15
HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to adapt the tone mapping algorithm to different styles of video is also a big challenge

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A format conversion method for high dynamic range video
  • A format conversion method for high dynamic range video

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described below in combination with specific embodiments.

[0032] A format conversion method for high dynamic range video, specifically comprising the steps of:

[0033] (1) Decode the input HDR10 video to obtain data in the YCbCr color space;

[0034] (2) Perform color space conversion on the obtained YCbCr data in the BT.2020 color gamut to obtain data in the RGB color space;

[0035] (3) Electro-optic conversion (EOTF) is performed on the color components in the three channels of R / G / B respectively; the conversion function of the electro-optic conversion adopts the ITU-R BT.2100 standard;

[0036] (4) Use the mapping coefficient of tone mapping to process the color components in the three channels of R / G / B according to the brightness of each pixel, that is, R SDR =R HDR Coef(Y), G SDR =G HDR Coef(Y), BSDR =B HDR · Coef(Y); the calculation algorithm of the mapping coefficient required for tone mapping is realized by brightn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a format conversion method for an HDR (High Dynamic Range) video, especially comprising the following steps: decoding an input HDR10 video to obtain data of a YCbCr color space; performing color space conversion on the obtained YCbCr data at a BT.2020 color gamut to obtain data of an RGB color space; respectively performing electro-optical conversion on color components inR / G / B channels; respectively processing the color components in the R / G / B channels according to the brightness of each pixel point by using mapping coefficients of tone mapping; respectively performing photoelectric conversion on the color components in the R / G / B channels in the step 4; performing color space conversion on the data of the RGB color space obtained through final processing to obtaindata of the YCbCr color space; and coding the YCbCr data obtained through the processing in the step 6 to obtain an SDR (Standard Dynamic Range) video stream. The format conversion method of the invention has the beneficial effects that: the HDR video can retain creation intention of an original content producer to a large extent, and a conversion result can present good image aesthetic feeling and fidelity.

Description

technical field [0001] The present invention relates to the related technical field of video image processing, in particular to a format conversion method of high dynamic range video. Background technique [0002] High Dynamic Range (Hereinafter referred to as HDR) video, compared with Standard Dynamic Range (Hereinafter referred to as SDR) video, the light and dark levels of the image are clearer, the image details are richer, and the real scene can be reproduced more realistically . With the development of HDR technology and the gradual application of HDR cameras, the shooting and production technology of HDR video has gradually matured, and the number of HDR format videos on the market has gradually increased, among which HDR10 format videos are more accepted by everyone. The HDR10 format was first defined by the Consumer Electronics Association (CEA). The specific definitions include: SMPTE ST.2084 is used for the electro-optic conversion curve; 4:2:0 is used for the ch...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4402H04N19/186H04N9/77H04N9/64
CPCH04N9/64H04N9/77H04N21/440218H04N19/186
Inventor 王建伟谢亚光
Owner HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com