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A Video Error Tolerant Coding Method Based on Error Correction Priority Value Feedback

An error correction and error-tolerant coding technology, applied in the field of video error-tolerant coding, can solve problems such as high computational complexity, difficult practical application, and high requirements for reliable and timely transmission of feedback information.

Inactive Publication Date: 2018-06-29
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some methods require high reliability and timely delivery of feedback information
In addition, some methods have high computational complexity and are difficult to apply in practice.

Method used

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  • A Video Error Tolerant Coding Method Based on Error Correction Priority Value Feedback
  • A Video Error Tolerant Coding Method Based on Error Correction Priority Value Feedback
  • A Video Error Tolerant Coding Method Based on Error Correction Priority Value Feedback

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Embodiment Construction

[0056] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention:

[0057] like figure 1 Shown: a video error-tolerant coding method based on error correction priority value feedback, mainly includes the following steps:

[0058] (1). The video decoder receives the code stream of a frame of image and decodes it:

[0059] The first frame image of the entire video sequence is encoded by the encoder and then transmitted to the decoder for decoding, and the frame is encoded in the usual way. The error-tolerant encoding method of each subsequent frame will be determined based on the decoding feedback information of the previous frame and the calculation of the encoding itself. Many information generated during the normal encoding and ...

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Abstract

The invention discloses a video error-tolerant encoding method based on error correction priority value feedback, which includes the following steps: S100. Decode a frame image in the encoded video frame sequence to determine whether there is a macroblock loss in the frame; count the video The position of the lost macroblock in the frame sequence generates the cumulative value of the number of times that the macroblock is lost, and then generates the error correction priority value. At this time, the error correction priority value is the cumulative value of the number of times that the macroblock is lost; S200. Obtain and accumulate each macro in the video frame sequence The inter-frame difference value of the block position; the inter-frame difference value is the sum of the absolute value of the difference between the pixel values ​​of the current macroblock and the macroblock at the same position in the reference frame; S300. According to the error correction priority value and the position of each macroblock The inter-frame difference value calculates the weighted difference cumulative value of each macroblock position. When the weighted difference cumulative value exceeds the set threshold, error correction is performed when the next frame image is encoded; S400. After the macroblock is refreshed, the code stream is transmitted to the decoder to complete the repair.

Description

technical field [0001] The invention relates to a video error-tolerant coding method, in particular to a video error-tolerant coding method system based on error correction priority value feedback. Involves patent classification number H04 electric communication technology H04N image communication, such as TV H04N7 / 00 TV system H04N7 / 24 system H04N7 / 26 using pulse code modulation to transmit TV signals using bandwidth reduction. Background technique [0002] With the in-depth development of computer and network communication technology, simple text can no longer meet people's needs, and video with rich information has gradually entered people's daily life and become an indispensable part. Limited network transmission bandwidth and storage space require the compression of huge video original data, so video codec technology and standards have become a very important part of multimedia applications. Existing video codec standards rely on the integrity of the code stream. If a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/89H04N19/65
Inventor 周怡然王国峰李广强邓志安白一鸣
Owner DALIAN MARITIME UNIVERSITY