Encoding method for conducting error concealment processing in moving image transmission system

A technology of transmission system and encoding method, applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as inability to clear errors

Inactive Publication Date: 2015-06-03
青岛威力电子科技有限公司
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At this time, since only information limited to the decoder is used for error concealment, there are some limitations on the accuracy of error concealment
[0013] However, the method of using the error recovery method and the error concealment method alone as described above has a disadvantage that all errors that occur cannot be eliminated.

Method used

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  • Encoding method for conducting error concealment processing in moving image transmission system
  • Encoding method for conducting error concealment processing in moving image transmission system
  • Encoding method for conducting error concealment processing in moving image transmission system

Examples

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Embodiment Construction

[0036] The examples in the present invention will be described in detail below with reference to the accompanying drawings.

[0037] This invention proposes a video coding method that hides and transmits important image header information to the user through data hiding during the coding process, and handles error concealment more effectively when errors occur in the decoder.

[0038] In video image communication, the amount of video data is relatively large, so it must be compressed before transmission.

[0039] If all video data is compressed, the amount of compression will be quite large, so select a part similar to the previous image to calculate the motion vector, and only encode the difference value related to it, and then perform variable length coding processing, and then perform send. When video data is compressed by the methods described above, a lot of data compression is possible; however, error propagation occurs when errors occur. That is to say, due to compres...

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Abstract

The present invention discloses an encoding method for conducting error concealment processing in a moving image transmission system, and in particular to a moving image encoding method for providing image heading information through data concealment in the process of an encoder when a multimedia image is transmitted through a network and also conducting effective error concealment processing with respect to errors which occur in a decoding process. The image heading information comprises encoded structural image heading information and heading information which is changed each time during encoding, wherein the encoded structural image heading information comprises information related to the extension condition of an image heading, while the heading information which is changed each time during encoding comprises quantization parameters (pquant) of a corresponding image and the image information (temporaLreference value) with reference to the corresponding image.

Description

technical field [0001] This invention relates to a video coding method, in particular to a coding method for error concealment processing in a video transmission system. Background technique [0002] Recently, with the development of ultra-high-speed mobile communication technologies such as IMT2000, not only audio and still images but also multimedia services such as moving images have been widely used. Examples of video multimedia services include one-way services such as VOD and two-way services such as video calls. Video communication requires more data volume than voice communication, so video compression is basically required. [0003] The general video encoding process is as follows: figure 1 As shown, through motion compensation (motion compensation) and motion prediction (motion estimation), a motion vector (motion vector) is extracted from an input image, and the image is subjected to DCT and quantization processing. In order to make the data compression process...

Claims

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Application Information

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IPC IPC(8): H04N19/895
Inventor 不公告发明人
Owner 青岛威力电子科技有限公司
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