Method for processing motion information item and encoding method

A technology of motion information and information items, which is applied in the field of image encoding and decoding, and can solve problems such as loss of information

Active Publication Date: 2016-05-11
FRANCE TELECOM SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, a disadvantage of this technique is the loss of information due to the selection of motion vectors to be encoded

Method used

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  • Method for processing motion information item and encoding method
  • Method for processing motion information item and encoding method
  • Method for processing motion information item and encoding method

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Experimental program
Comparison scheme
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Embodiment Construction

[0106] 5.1 General principles

[0107] The general principle of the invention relies on processing a motion information item Imv relating to a picture in a sequence of pictures to deliver a modified motion information item I'mv to an encoder for encoding the picture or picture block. This modified motion information item I'mv is referred to hereinafter as the motion information item to be encoded. The encoding cost of this modified information item is a priori optimized compared to the motion information item before processing.

[0108] Thus, the invention makes it possible to reduce the overall cost of coding a sequence of video images by not directly coding the motion information Imv associated with each picture but by coding the motion information item I'mv processed according to the invention. cost.

[0109] To this end, the invention is based on a set of motion information items that may be used to encode a block or image. According to the invention, the construction...

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Abstract

A method and apparatus are provided for processing movement information relating to a regular image of a sequence of images. The method includes: a step of building a list including at least one expected piece of movement information and at least one unexpected piece of movement information; a first step of associating expected movement information with movement information according to a first rule for optimizing the cost of encoding the movement information to be encoded; a second step of associating each unexpected piece of movement information not associated during the first association step with movement information to be encoded, identified among the pieces of movement information of the list, according to a second rule which aims to ensure that each piece of movement information is associated with a single piece of movement information to be encoded.

Description

technical field [0001] The technical field of the present invention relates to encoding and decoding of images, and in particular to encoding and decoding of a video stream composed of a series of continuous images. [0002] More specifically, the present invention relates to predictive coding techniques for encoding motion information of images, such as encoding motion vectors or motion residuals. [0003] The invention is particularly suitable for video coding implemented in current video coders (MPEG, H.264, etc.) or future video coders (ITU-T / VCEG (H.265) or ISO / MPEG (HVC)). Background technique [0004] In the following, see figure 1 , describes the prior art on image prediction in the field of encoding or decoding image sequences by encoding motion vectors of image blocks, where the image is first subdivided into macroblocks which are then subdivided into blocks. A block is composed of a set of points or pixels, where a block can have a square, rectangular, triangula...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04N19/52H04N19/61H04N19/567
CPCH04N19/521H04N19/52H04N19/567H04N19/61
Inventor乔尔·琼朱利安·勒达诺让-马克·迪埃斯
OwnerFRANCE TELECOM SA