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

Reference Picture Signal Notification

A technology for referring to pictures and pictures, which is applied in the direction of digital video signal modification, image communication, transmission system, etc., and can solve the problems of message loss and not knowing the decoder.

Active Publication Date: 2016-07-13
TELEFON AB LM ERICSSON (PUBL)
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the encoder will not know if the decoder is able to utilize the dec_ref_pic_marking_repetitionSEI message
Also, there is a risk that the dec_ref_pic_marking_repetitionSEI message is also lost

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
  • Reference Picture Signal Notification
  • Reference Picture Signal Notification
  • Reference Picture Signal Notification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] In the drawings, the same reference signs are used for similar or corresponding elements.

[0049] This embodiment generally involves encoding and decoding pictures (also referred to as frames in the art) of a video stream. Specifically, this embodiment relates to management of reference pictures related to video encoding and decoding and the signaling of these reference pictures from the encoder to the decoder.

[0050] For example, video encoding represented by H.264 / MPEG-4 AVC and HEVC uses a reference picture as a prediction or reference for encoding and decoding pixel data of the current picture. In the art, this is often referred to as inter-coding, where pictures are encoded and decoded relative to these reference pictures. In order to be able to decode coded pictures, the decoder must therefore know which reference pictures are used for the current coded picture and must be able to access these reference pictures. Generally, the decoder uses a decoded picture buffe...

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 encoded representation (60) is decoded by retrieving the buffer description (60) from the encoded representation (60) of the picture (10) of the video stream (1). The buffer description information is used to determine at least one picture identifier identifying the respective reference picture (40, 42) as a decoding reference for the picture (10). The decoded picture buffer is updated (530, 650) based on the determined picture identifier. The coded representation (60) of the picture (10) itself includes information needed by the decoder (400) to identify the reference pictures (40, 42) needed to decode the coded picture (60).

Description

Technical field [0001] The embodiments generally relate to reference picture management related to video encoding and decoding, and in particular, to reference picture signaling and buffer management. Background technique [0002] H.264 (also known as Moving Picture Experts Group-4 (MPEG-4) Advanced Video Coding (AVC)) is an existing video coding standard. It consists of a block-based hybrid video coding scheme using temporal and spatial prediction. [0003] High Efficiency Video Coding (HEVC) is a new video coding standard currently being developed in the Joint Collaborative Team-Video Coding (JCT-VC). JCT-VC is a collaborative project between MPEG and the International Telecommunication Union Telecommunication Standardization Department (ITU-T). Currently, a working draft (WD) is defined, which includes large macroblocks (for the largest coding unit, abbreviated as LCU) and many other new tools, and is significantly more effective than H.264 / AVC. [0004] At the receiver, the de...

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): H04N19/503H04N19/61H04N19/89
CPCH04N19/70H04N19/89H04N19/31H04N19/433H04N19/58H04N19/573H04N19/44H04N19/46H04L65/61H04L47/50
Inventor 乔纳坦·萨缪尔森理卡尔德·肖伯格
Owner TELEFON AB LM ERICSSON (PUBL)