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Motion image coding method

An encoding method and image technology, applied in the field of moving image encoding, can solve problems such as inability to clear errors

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

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
[0012] 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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Examples

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Embodiment Construction

[0033] The examples in the present invention will be described in detail below with reference to the accompanying drawings.

[0034] 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.

[0035] In video image communication, the amount of video data is relatively large, so it must be compressed before transmission. 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.

[0036] 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 the com...

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Abstract

The invention relates to dynamic image coding method with error hiding in dynamic image transmission system, which comprises following steps: 1. extracting head information composed of head structural information with head expansion and replaced head information with pquant and temporal reference value to input image; 2. to obtained information, hiding data when coding to transmit; 3.extracting the image head information from decoder to hide error.

Description

[technical field] [0001] This invention relates to a moving image coding method, especially a moving image coding method that effectively conceals errors generated in the decoding process through data hiding in the encoding process when multimedia images are transmitted through the network. 【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 a larger amount of data than voice communication, so video compression is basically required. [0003] The general moving image encoding process is shown in Figure 1. Through motion compensation and motion estimation, the motion vector is extracted from the input image, and the image is subjected to DCT and q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/895
Inventor 金柱玟柳在信
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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