JPS6464080A - Method and device for extracting contour of input picture - Google Patents

Method and device for extracting contour of input picture

Info

Publication number
JPS6464080A
JPS6464080A JP62220365A JP22036587A JPS6464080A JP S6464080 A JPS6464080 A JP S6464080A JP 62220365 A JP62220365 A JP 62220365A JP 22036587 A JP22036587 A JP 22036587A JP S6464080 A JPS6464080 A JP S6464080A
Authority
JP
Japan
Prior art keywords
contour
performs
threshold level
picture
line width
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP62220365A
Other languages
Japanese (ja)
Inventor
Tsuyoshi Fujimoto
Takashi Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62220365A priority Critical patent/JPS6464080A/en
Publication of JPS6464080A publication Critical patent/JPS6464080A/en
Pending legal-status Critical Current

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  • Image Analysis (AREA)

Abstract

PURPOSE:To realize extraction of the contour having its line width '1' by setting a picture element having the output of a contour extraction acting element set at a certain threshold level or higher at '1' and obtaining a picture containing the picture elements less than said threshold level set at zero. CONSTITUTION:A contour extraction after-processing part 27 performs the after-processing after the contour of an input picture is extracted. In this case, a threshold value processing part 24 performs the binarizing process where the picture elements larger than a prescribed threshold level are set at '1' with those less than the prescribed threshold level set at zero respectively. Furthermore a contour extracting part 23 performs a maximum point extracting process where the local maximum point of the extracted contour is set at '1' with other points set at zero respectively. The value of the maximum point has the line width '1' and contains many points other than the contour. A mask processing part 26 performs a masking process to secure an AND between both parts 24 and 25 to extract only the contour having the line width '1'.
JP62220365A 1987-09-04 1987-09-04 Method and device for extracting contour of input picture Pending JPS6464080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62220365A JPS6464080A (en) 1987-09-04 1987-09-04 Method and device for extracting contour of input picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62220365A JPS6464080A (en) 1987-09-04 1987-09-04 Method and device for extracting contour of input picture

Publications (1)

Publication Number Publication Date
JPS6464080A true JPS6464080A (en) 1989-03-09

Family

ID=16749993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62220365A Pending JPS6464080A (en) 1987-09-04 1987-09-04 Method and device for extracting contour of input picture

Country Status (1)

Country Link
JP (1) JPS6464080A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435279A (en) * 1990-05-25 1992-02-06 Sharp Corp Chromakey processor
JP2012073953A (en) * 2010-09-29 2012-04-12 Olympus Corp Image processing device, image processing method, and image processing program

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435279A (en) * 1990-05-25 1992-02-06 Sharp Corp Chromakey processor
JP2012073953A (en) * 2010-09-29 2012-04-12 Olympus Corp Image processing device, image processing method, and image processing program

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