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Method and appts for coding/decoding redundant image

A technology of redundant coding and image coding, applied in the field of image coding and decoding, which can solve the problems of reduced coding efficiency and complex decoder structure.

Inactive Publication Date: 2004-08-11
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, when each bit stream is independently decoded, the coding efficiency is reduced and the decoder structure becomes complicated so that each bit stream is decoded independently or superimposed on each other

Method used

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  • Method and appts for coding/decoding redundant image
  • Method and appts for coding/decoding redundant image
  • Method and appts for coding/decoding redundant image

Examples

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Embodiment Construction

[0041] Hereinafter, preferred embodiments of the present invention will be described in detail, examples of which are illustrated by the accompanying drawings.

[0042] FIG. 1A is a block diagram illustrating an apparatus structure for performing redundant image coding to improve error stability according to an embodiment of the present invention. The device includes: a strip structure modeling unit 100, configured to determine the strip structure to be used for coding in the input image; a redundant image coding modeling unit 110, used to determine the position and location of the region to be redundantly coded in the input image Quantity; slice allocation unit 120, for allocating each region of the input image into determined slices; picture header encoding unit 130, for encoding common information required for decoding all slices in the image; and slice encoding unit 140, for encoding the input strip unit image.

[0043] The slice encoding unit 140 further includes: a slic...

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Abstract

A method and apparatus for redundant image encoding and decoding, in which using a slice structure used for image encoding part of an image is redundantly encoded and decoded are provided. The apparatus for redundant image encoding includes a slice modeling unit which determines the structures of slices to be used in encoding the image and regions to be redundantly encoded so that image data of a predetermined region of the image to be redundantly encoded is contained in a plurality of slices, a slice allocation unit which allocates image data of each region of an image to the plurality of slices, a picture header encoding unit which encodes information required to decode the plurality of encoded slices and generates picture information, and a slice encoding unit which encodes the image in units of slices according to the picture header information.

Description

technical field [0001] The present invention relates to an image encoding and decoding method and device, in particular to encoding and decoding redundant images used in image encoding slices, and the slices are used for image encoding. Background technique [0002] Ordinary image compression is to remove redundant information. When such compression is performed on a moving image, temporal / spatial predictive coding, transform / quantization coding, and entropy coding are usually sequentially performed. [0003] Burst errors and packet loss errors can occur when compressed images are generated as a bitstream and transmitted over a network. When these errors occur, the bit stream adjacent to the erroneous part cannot be correctly decoded. In order to solve this deficiency, a conventional method has been proposed which divides an image into a plurality of slice units and encodes them so that errors occur only on corresponding slices. However, in this conventional method, when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H03M7/40H04N7/12H04N19/00H04N19/102H04N19/139H04N19/166H04N19/174H04N19/34H04N19/46H04N19/625H04N19/70H04N19/89H04N19/91
CPCH04N19/00454H04N19/00781H04N19/00012H04N19/00933H04N19/00884H04N19/00272H04N19/00145H04N19/0026H04N19/102H04N19/137H04N19/17H04N19/174H04N19/37H04N19/61H04N19/70H04N19/89H04N19/107H04N19/124H04N19/176H04N19/44
Inventor 金佑湜李时和李相祚
Owner SAMSUNG ELECTRONICS CO LTD