Fault disguising method for dynamic image decoding

An error concealment and dynamic image technology, applied in the field of error concealment, can solve problems such as poor image quality of the receiver, prevent error propagation and improve picture quality

Inactive Publication Date: 2007-03-14
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0022] If this error propagation phenomenon occurs,

Method used

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  • Fault disguising method for dynamic image decoding
  • Fault disguising method for dynamic image decoding
  • Fault disguising method for dynamic image decoding

Examples

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Example Embodiment

[0041] Hereinafter, an ideal embodiment of the error concealment method when decoding a moving image of the present invention will be described in detail with reference to the accompanying drawings.

[0042] 4 is a sequence diagram illustrating an error concealment method when decoding a moving picture according to an embodiment of the present invention. Fig. 5 is a schematic diagram showing the correction of the movement of the image, that is, the hiding of errors.

[0043] Hereinafter, referring to Figures 4 and 5, the error concealment method when decoding a dynamic image according to an embodiment of the present invention is to prevent the transmission of MPEG-4 bit stream information through the line network due to The error concealment method used in MPEG-4 decoding due to the degradation of decoded image quality caused by the channel environment will be explained in detail.

[0044] First, for the input bit stream information, the error detection device detects the error, a...

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Abstract

This invention relates to one method to hide error for dynamic image decoding, which comprises the following steps: testing error for input bit flow information and storing the test information; using and preparing rule information started from front image for tested error; determining the error information on front image set information; according to above results, if the information comprises error, then not hiding subject and using other information for hiding.

Description

【Technical field】 [0001] The present invention relates to an error concealment method when decoding moving pictures. Specifically, it concerns an error concealment method when decoding MPEG-4 (Motion Picture Experts Group-4) moving pictures. Utilize the error concealment method when decoding according to MPEG-4 (Motion Picture Experts Group-4) dynamic image of the present invention, when the MPEG-4 (Motion Picture Experts Group-4) bitstream information by line network is transmitted, just can Effectively prevent the image quality degradation caused by channel errors when decoding MPEG-4 (Motion Picture Experts Group-4). 【Background technique】 [0002] For a system that compresses digital multimedia data and then transmits or encodes it, for example, in the case of H.263 or MPEG4, when compressing and encoding a moving image, the data of the digital image is converted into Processing is performed in units of modules (macro blocks). When it is encoded (encoding), it include...

Claims

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Application Information

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IPC IPC(8): H04N7/68H04N19/895
Inventor 韩承熹郑永安郑仁泓
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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