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Method for encoding at least one digital picture, encoder, computer program product

A digital image and computer technology, applied in image communication, digital video signal modification, television, etc., can solve problems such as low coding efficiency

Inactive Publication Date: 2008-09-03
AGENCY FOR SCI TECH & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the case where the second layer 102 (QCIF, medium) is the "base layer" of the third layer 103 (CIF, low), the same as the first layer 101 (QCIF, low) is the third layer 103 (CIF, low). Coding efficiency of the third layer 103 (CIF, low) is lower compared to the case of the "base layer" of )

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  • Method for encoding at least one digital picture, encoder, computer program product
  • Method for encoding at least one digital picture, encoder, computer program product
  • Method for encoding at least one digital picture, encoder, computer program product

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Embodiment Construction

[0035] For example, using a prediction scheme with two "base layers" (in one embodiment layers (QCIF, medium) and (CIF, low) as described above) for (CIF , medium) in the base layer of each slice. In other words, there are two base layers for each slice in (CIF, medium). The scheme is given below in detail.

[0036] The coding information assigned to a picture element is, for example, chrominance information or luminance information.

[0037] The picture to be coded may be one of a plurality of pictures, ie a frame of a video sequence, and the first representation and the second representation can be generated using motion compensation.

[0038] The embodiments described in the context of the method for encoding at least one digital image are similarly valid for encoders and computer program products.

[0039] In one embodiment, the second representation of the image has a lower signal-to-noise ratio than the first representation.

[0040] In one embodiment, the second rep...

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Abstract

A method for encoding at least one digital picture is described, wherein a first representation of the picture is generated, a second representation of the picture is generated and a third representation of the picture is generated from the first representation of the picture and the second representation of the picture by predicting the coding information of the picture elements of the picture using the first representation of the picture and the second representation of the picture.

Description

technical field [0001] The invention relates to a method, an encoder and a computer program product for encoding at least one digital image. Background technique [0002] During the standardization work of MPEG (Moving Picture Experts Group), a method for Scalable Video Coding (SVC) was proposed, which is based on open-loop Motion Estimation / Motion Compensation (ME / MC), and is a video coding standard Scalable extensions to AVC, see [1] and [2]. [0003] Apart from the ME / MC scheme available in AVC [2], the key part of the proposed SVC method is the inter-layer prediction scheme. [0004] For each slice in the enhancement layer, select the corresponding "base layer" (specified by the parameter base_id_plus1, see [1]) to remove the motion information and residual information of the "base layer" and the enhancement layer Redundancy between motion information and residual information. [0005] Since there is only one base layer for each slice in the enhancement layer (see [1]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50
CPCH04N19/30H04N19/61
Inventor 李正国姚慰林庆帆林晓S·拉哈尔贾
Owner AGENCY FOR SCI TECH & RES