TW200520539A - Video compression device and method - Google Patents

Video compression device and method

Info

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
Application number
TW092133799A
Other languages
Chinese (zh)
Other versions
TWI232675B (en
Inventor
Sam Shang-Hsuan Tsai
Hsueh-Ming Hang
Chia-Yang Tsai
Ti-Hao Chiang
Original Assignee
Univ Nat Chiao Tung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Nat Chiao Tung filed Critical Univ Nat Chiao Tung
Priority to TW92133799A priority Critical patent/TWI232675B/en
Application granted granted Critical
Publication of TWI232675B publication Critical patent/TWI232675B/en
Publication of TW200520539A publication Critical patent/TW200520539A/en

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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.
TW92133799A 2003-12-02 2003-12-02 Video compression device and method TWI232675B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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