TW200520539A - Video compression device and method - Google Patents
Video compression device and methodInfo
- Publication number
- TW200520539A TW200520539A TW092133799A TW92133799A TW200520539A TW 200520539 A TW200520539 A TW 200520539A TW 092133799 A TW092133799 A TW 092133799A TW 92133799 A TW92133799 A TW 92133799A TW 200520539 A TW200520539 A TW 200520539A
- Authority
- TW
- Taiwan
- Prior art keywords
- video compression
- bit rate
- motion
- motion vector
- wavelet
- Prior art date
Links
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- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The present invention provides a video compression device and method, which employs combination of time filtering for motion compensation and embedded wavelet coding to effect scalability of error for compression quantification, temporal analysis, and spatial analysis in order to realize information scalability for motion information for improving low bit rate performance of wavelet video compression method, and provides a layer-divided coding method for motion information, which carries out layer-divided coding on a motion vector in accordance with the size of spatial block represented thereby or timed frame number or precision of motion vector and divides the motion vector into multiple layers, whereby when video data stream is subject to adjustment, the motion information needs only to be put in the last data stream. With the above described method, the performance of interframe wavelet video compression in low bit rate is significantly improved, while suffering minor loss of compression ratio in high bit rate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92133799A TWI232675B (en) | 2003-12-02 | 2003-12-02 | Video compression device and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92133799A TWI232675B (en) | 2003-12-02 | 2003-12-02 | Video compression device and method |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI232675B TWI232675B (en) | 2005-05-11 |
TW200520539A true TW200520539A (en) | 2005-06-16 |
Family
ID=36320104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW92133799A TWI232675B (en) | 2003-12-02 | 2003-12-02 | Video compression device and method |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI232675B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104683808A (en) * | 2009-10-01 | 2015-06-03 | Sk电信有限公司 | Video decoding method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111277800A (en) * | 2020-03-02 | 2020-06-12 | 成都国科微电子有限公司 | Monitoring video coding and playing method and device, electronic equipment and storage medium |
-
2003
- 2003-12-02 TW TW92133799A patent/TWI232675B/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104683808A (en) * | 2009-10-01 | 2015-06-03 | Sk电信有限公司 | Video decoding method |
CN104683808B (en) * | 2009-10-01 | 2018-02-02 | Sk电信有限公司 | Video encoding/decoding method |
Also Published As
Publication number | Publication date |
---|---|
TWI232675B (en) | 2005-05-11 |
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Legal Events
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MM4A | Annulment or lapse of patent due to non-payment of fees |