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Motion image coding method

A coding method and image technology, applied in the field of moving image coding, to achieve effective processing and effective error concealment

Inactive Publication Date: 2006-04-05
LG ELECTRONIC (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Only using the error recovery method and error concealment method described above cannot completely resolve the errors that occurred.

Method used

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Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to additional drawings.

[0034] In the encoding process, the invention hides certain macroblock synchronization information forming a block group unit through data hiding, and transmits it, so as to provide a moving image encoding method that more effectively handles error concealment when an error occurs in the decoder.

[0035] As we all know, due to the large amount of data in video communication, the video information is compressed and transmitted. If all video data is compressed, the amount of compressed data will increase. Therefore, find out the similar part of the previous image, find the motion vector, and encode the difference image of this part, and then run the variable-length encoding for transmission. .

[0036] If video data is compressed in this way, more data compression can be performed, but when an error occurs, error propagation occurs. That is, due to the use o...

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Abstract

The invention relates to dynamic image coding method, which comprises: to input image, extracting synchronous information of some macroblock formed block group unit; to the extracted information, transmitting with data hiding when coding; extracting said information with data hiding from decoder to form macroblock synchronous information and execute error hiding. Wherein, the said synchronous information relates to the initial position of sixth macroblock on bit flow. Besides, from this invention, using grade value by running quantization parameter and / or DCT to hide data.

Description

【Technical Field】 [0001] The present invention is an invention related to moving image coding, especially when multimedia images are transmitted through a network, the moving image coding method can effectively deal with the error concealed by hiding the data in the coding process to deal with errors in the decoding process. 【Background technique】 [0002] Recently, as ultra-high-speed mobile communications such as International Mobile Telecommunications 2000 (IMT2000) have become practically used, not only audio and still images, but also multimedia services such as moving images are expanding. As examples of moving image multimedia services, there are one-way services such as video on demand (VOD) and two-way services such as video calls. Because video communication has significantly more data than audio calls, video compression is basically run. [0003] The general moving image coding process and attached figure 1 As shown, for the input image, the motion vector is extracted...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/46H04N19/895
Inventor 柳在信
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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