Video frequency coding and de-coding method for supporting video frequency frame random reading |
Title： |
| Video frequency coding and de-coding method for supporting video frequency frame random reading |
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Application Number： |
200710062633 |
Application Date： |
2007/01/12 |
Announcement Date： |
2007/07/25 |
Pub. Date： |
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Publication Number： |
101005622 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H04N 7/26H04N 7/32 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Dai Qionghai, Yang Feng, Ding Guiguang |
Key Words： |
Video frequency, coding, de-coding, random reading, video frequency frame |
Abstract： |
The encode method comprises: grouping the video frame setting all frames in the a group as I frame, P frame, B frame and randomly-read W frame making traditional encode for the I frame, P frame and B frame in a group for W frame, firstly encoding it using a P frame encoding way, and then using a distributing video encode approach and referring a I frame mostly closed to I frame and anyone frame before the I frame and W frame to make encode. The decode method comprises: when no needs to make random reading, using a traditional approach to decode I frame, P frame and B frame, and the W frame is decoded using P frame approach when there are needs to make random reading, using distributed video decode approach to decode W frame. The invention can improve the randomly-reading performance and generate the bit-stream with anti-error feature. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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