KR970017025A - Vehicle Image Compression and Restoration Method in Parking Management System - Google Patents
Vehicle Image Compression and Restoration Method in Parking Management System Download PDFInfo
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- KR970017025A KR970017025A KR1019950031674A KR19950031674A KR970017025A KR 970017025 A KR970017025 A KR 970017025A KR 1019950031674 A KR1019950031674 A KR 1019950031674A KR 19950031674 A KR19950031674 A KR 19950031674A KR 970017025 A KR970017025 A KR 970017025A
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Abstract
본 발명은 주차관리 시스템에 있어서 차량영상 압축 및 복원방법에 관한 것이다. 이를 위하여 차량 입고시 촬상된 N×N 픽셀크기의 차량 영상을 획득하는 단계; 획득된 영상에 대하여 운전자와 차량 번호판 관심영역의 각 좌표값을 설정하는 단계; 저압축율을 갖는 제1양자화 테이블과 고압축율을 갖는 제2양자화 테이블을 생성하는 단계; 설정된 좌표값에 해당하는 관심영역을 이산여현변환한 후 제1양자화 테이블에 의해 양자화를 수행하는 단계; 관심영역 이외의 비관심영역을 이산여현변환한 후 제2양자와 테이블에 의해 양자화를 수행하는 단계; 양자화된 차량 영상을 부호화하는 단계; 부호화된 차량 영상을 소정의 저장매체에 저장하는 단계; 저장 매체에 저장된 차량영상 중 해당 입고시간에 입고된 차량영상을 복호화하는 단계; 복원하고자 하는 차량영상에서 운전자 혹은 차량 번호판 관심영역 중 디스플레이하고자 하는 관심영역을 선택하는 단계; 좌표값을 이용하여 관심영역 선택단계에서 선택한 관심영역만 역양자화 및 역이산여현변환하는 단계; 및 복원된 관심영역을 디스플레이하는 단계로 이루어진다. 따라서 압축시 데이타량이 감소되고, 디스플레이시 소요되는 시간이 감소된다.The present invention relates to a vehicle image compression and restoration method in a parking management system. Acquiring a vehicle image of an N × N pixel size photographed when the vehicle is worn; Setting respective coordinate values of the driver and the license plate region of interest with respect to the acquired image; Generating a first quantization table having a low compression rate and a second quantization table having a high compression rate; Performing discrete cosine transform on the ROI corresponding to the set coordinate value and performing quantization by a first quantization table; Performing discrete cosine transforming an uninterested region other than the region of interest and performing quantization by a second quantum and a table; Encoding a quantized vehicle image; Storing the encoded vehicle image on a predetermined storage medium; Decoding a vehicle image received at a corresponding wearing time among vehicle images stored in the storage medium; Selecting a region of interest to be displayed among the region of interest of the driver or the license plate in the vehicle image to be restored; Dequantizing and inverse discrete cosine transforming only the ROI selected in the ROI selection using coordinate values; And displaying the restored region of interest. Therefore, the amount of data during compression is reduced, and the time required for display is reduced.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 차량영상에서 운전자 및 차량번호판 관심영역의 좌표값을 설정하는 방법을 설명하는 도면이다.2 is a diagram illustrating a method of setting coordinate values of a driver and a license plate ROI in a vehicle image.
제3도는 주차관리 시스템에 있어서 본 발명에 의한 차량 영상 압축방법을 설명하기 위한 도면이다.3 is a view for explaining a vehicle image compression method according to the present invention in the parking management system.
제4도는 주차관리 시스템에 있어서 본 발명에 의한 차량 영상 복원방법을 설명하기 위한 도면이다.4 is a view for explaining a vehicle image restoration method according to the present invention in the parking management system.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950031674A KR970017025A (en) | 1995-09-25 | 1995-09-25 | Vehicle Image Compression and Restoration Method in Parking Management System |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950031674A KR970017025A (en) | 1995-09-25 | 1995-09-25 | Vehicle Image Compression and Restoration Method in Parking Management System |
Publications (1)
Publication Number | Publication Date |
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KR970017025A true KR970017025A (en) | 1997-04-28 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019950031674A KR970017025A (en) | 1995-09-25 | 1995-09-25 | Vehicle Image Compression and Restoration Method in Parking Management System |
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KR (1) | KR970017025A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030031305A (en) * | 2001-10-13 | 2003-04-21 | 주식회사 커벡스 | Photographing system for gel image of eletrophoresis |
KR100696226B1 (en) * | 2005-01-20 | 2007-03-22 | 후지쯔 가부시끼가이샤 | Vehicle monitoring method, specific character pattern recognition devicem and vehicle monitoring system |
KR101328533B1 (en) * | 2012-04-10 | 2013-11-13 | 한국과학기술원 | System and method for compressing vehicle image for detection of license plate |
-
1995
- 1995-09-25 KR KR1019950031674A patent/KR970017025A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030031305A (en) * | 2001-10-13 | 2003-04-21 | 주식회사 커벡스 | Photographing system for gel image of eletrophoresis |
KR100696226B1 (en) * | 2005-01-20 | 2007-03-22 | 후지쯔 가부시끼가이샤 | Vehicle monitoring method, specific character pattern recognition devicem and vehicle monitoring system |
KR101328533B1 (en) * | 2012-04-10 | 2013-11-13 | 한국과학기술원 | System and method for compressing vehicle image for detection of license plate |
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