Unlock instant, AI-driven research and patent intelligence for your innovation.

An end-to-end implementation method for high dynamic range video

A technology with high dynamic range and implementation method, which is applied in the field of HDR video, can solve the problems of HLG video color shift and so on, and achieve the effect of reasonable design and reduced production complexity

Active Publication Date: 2021-08-10
ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The production and transmission based on HLG video is similar to traditional SDR, and the implementation is relatively simple. Therefore, the current 4K ultra-high-definition TV live broadcast solution generally adopts the HLG-based solution to produce and transmit HLG programs. However, HLG video may have color shift in some scenarios.

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
  • An end-to-end implementation method for high dynamic range video
  • An end-to-end implementation method for high dynamic range video
  • An end-to-end implementation method for high dynamic range video

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] An end-to-end implementation of high dynamic range video, such as figure 1 shown, including the following steps:

[0039] Step 1. Make a video program to get HLG video.

[0040] In this step, video program production is carried out according to the relevant requirements of ITU-R BT 2390 and ITU-R BT 2408. The technical parameters of the produced HDR video should comply with the provisions of GY / T 315-2018: resolution 3840x2160, frame rate 50 Frame / second, quantization accuracy 10 bits, BT.2020 color gamut, conversion curve is HLG, display peak brightness is 1000cd / m2.

[0041] Step 2. The encoder performs encoding processing on the HLG video to obtain an encoded code stream. The specific implementation method of this step is as follows:

[0042] (1) Convert HLG video to PQ video.

[0043] (2) Extract PQ video metadata; PQ video metadata includes st...

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 relates to an end-to-end implementation method of high dynamic range video, and its main technical features are: producing video programs to obtain HLG video; encoding HLG video to obtain coded streams; the coded streams are transmitted through different transmission networks ; The receiving end decodes the received transmission code stream, and sends the HLG video to the display terminal for display according to the display capability of the display terminal. The design of the present invention is reasonable. It increases the extraction and transmission of PQ dynamic metadata in the existing HLG-based ultra-high-definition television system. If it is an existing terminal that supports HLG video, it can be directly displayed; if it is a terminal that supports PQ video, it will HLG is converted to PQ video and displayed after dynamic adaptation, which can realize the best restoration display function of different display terminals without changing the existing transmission mode.

Description

technical field [0001] The invention belongs to the technical field of HDR video, in particular to a high dynamic range video end-to-end implementation method. Background technique [0002] In video technology, high dynamic range (High-Dynamic Range, HDR for short) video can be divided into HLG and PQ according to different conversion curves. Considering the diversification of display terminals and the differences in display capabilities, the HDR system in the broadcast and TV industry needs to solve the problem of producing and transmitting one type of HDR program. Through display compatibility and adaptation, it can be optimal on terminals with different display capabilities. Restore display. [0003] HLG video is compatible with the existing SDR in the low-brightness part, and is a scene-based signal format, which can be displayed normally on different display terminals; while PQ video is a display-based signal format, using absolute In the brightness system, when there...

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): H04N7/015H04N7/01G06T5/00
CPCG06T5/007H04N7/0125H04N7/015
Inventor 郭晓强周芸胡潇
Owner ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION