KR940003200A - Coding and Decoding System Using Variable Scan Method - Google Patents
Coding and Decoding System Using Variable Scan Method Download PDFInfo
- Publication number
- KR940003200A KR940003200A KR1019920013631A KR920013631A KR940003200A KR 940003200 A KR940003200 A KR 940003200A KR 1019920013631 A KR1019920013631 A KR 1019920013631A KR 920013631 A KR920013631 A KR 920013631A KR 940003200 A KR940003200 A KR 940003200A
- Authority
- KR
- South Korea
- Prior art keywords
- data
- encoding
- block data
- projection
- scanning
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 26
- 238000013144 data compression Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
본 발명은 영상데이타를 소정 크기의 블록들로 분할하여 부호화하고 이를 다시 복호화하는 시스템에 관한 것으로, 불록데이타에 대해 여러가지 방향으로 에너지프로젝션을 산출하고, 각 방향의 에너지프로젝션으로부터 부호화하는 선택영역과 스캔방향을 결정한 다음, 이 결정된 선택영역에서 스캔방향에 따라 블록데이타를 부호화하고, 이 부호화된 블록데이타를 부호화시 결정된 선택영역 및 스캔방향과 동일한 영역 및 스캔방향으로 복호화한다. 이와 같은 부호화 및 복호화시스템은 데이타분포에 따라 선택영역 및 스캔방법을 적응적으로 변환하므로써 데이타압축효율을 향상시킬 수 있다.The present invention relates to a system for dividing image data into blocks having a predetermined size, encoding the same, and decoding the same again. The present invention calculates energy projection in various directions with respect to block data, and scans a selection region and scan for encoding from the energy projection in each direction. After the direction is determined, block data is encoded according to the scan direction in the determined selection region, and the encoded block data is decoded into the same region and scan direction as the selection region and scan direction determined at the time of encoding. Such an encoding and decoding system can improve data compression efficiency by adaptively converting a selection region and a scanning method according to data distribution.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제5도는 본 발명에 의한 부호화장치의 일부를 나타내는 블록도.5 is a block diagram showing a part of an encoding apparatus according to the present invention.
제6도는 제5도의 장치에서 사용되는 프로젝션각을 나타내는 개략도.6 is a schematic diagram showing a projection angle used in the apparatus of FIG.
제7도는 제5도의 장치에서 사용되는 선택영역을 나타내는 개략도.7 is a schematic diagram showing a selection area used in the apparatus of FIG.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920013631A KR0134358B1 (en) | 1992-07-30 | 1992-07-30 | Coding and Decoding System Using Variable Scan Method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920013631A KR0134358B1 (en) | 1992-07-30 | 1992-07-30 | Coding and Decoding System Using Variable Scan Method |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940003200A true KR940003200A (en) | 1994-02-21 |
KR0134358B1 KR0134358B1 (en) | 1998-04-29 |
Family
ID=19337212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920013631A KR0134358B1 (en) | 1992-07-30 | 1992-07-30 | Coding and Decoding System Using Variable Scan Method |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0134358B1 (en) |
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1992
- 1992-07-30 KR KR1019920013631A patent/KR0134358B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR0134358B1 (en) | 1998-04-29 |
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