JPS6479880A - Method for extracting line for image processing - Google Patents

Method for extracting line for image processing

Info

Publication number
JPS6479880A
JPS6479880A JP62236159A JP23615987A JPS6479880A JP S6479880 A JPS6479880 A JP S6479880A JP 62236159 A JP62236159 A JP 62236159A JP 23615987 A JP23615987 A JP 23615987A JP S6479880 A JPS6479880 A JP S6479880A
Authority
JP
Japan
Prior art keywords
value
brightness
added
edge point
edge
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
JP62236159A
Other languages
Japanese (ja)
Inventor
Keiji Nakajima
Kazuhiko Washimi
Yoshikazu Sakagami
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62236159A priority Critical patent/JPS6479880A/en
Publication of JPS6479880A publication Critical patent/JPS6479880A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the price of a device for extracting lines and to improve a processing speed by adding brightness information to an edge point obtained by differential processing and detecting an edge in accordance with the brightness information of an edge previously applied as a model. CONSTITUTION:When difference values between each adjacent picture elements are added and the code of a difference value is changed from the immediately preceding value or the absolute value of the difference value goes to smaller than a certain determined value, an added value is set up to '0', the added values are searched in the reverse direction, and when the peak of the added values appears, the peak value is stored and a position corresponding to a half of the peak value is set as the position of the edge point. At that time, the position xi of the edge point and the peak value of the added values are stored. Thus, the brightness B(xi)-DELTAB/2 on a point starting a bright/dark change through the edge point and the brightness B(xi)+DELTAB/2 at the time of ending the change can be detected on the basis of the position xi of the edge point, the peak value DELTAB of the added values and the brightness B(xi).
JP62236159A 1987-09-22 1987-09-22 Method for extracting line for image processing Pending JPS6479880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62236159A JPS6479880A (en) 1987-09-22 1987-09-22 Method for extracting line for image processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62236159A JPS6479880A (en) 1987-09-22 1987-09-22 Method for extracting line for image processing

Publications (1)

Publication Number Publication Date
JPS6479880A true JPS6479880A (en) 1989-03-24

Family

ID=16996639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62236159A Pending JPS6479880A (en) 1987-09-22 1987-09-22 Method for extracting line for image processing

Country Status (1)

Country Link
JP (1) JPS6479880A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009524971A (en) * 2006-01-24 2009-07-02 イー．エム．ダブリュ．アンテナ カンパニー リミテッド Antenna speaker assembly and wireless communication apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60200373A (en) * 1984-03-23 1985-10-09 Hitachi Ltd Picture processor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60200373A (en) * 1984-03-23 1985-10-09 Hitachi Ltd Picture processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009524971A (en) * 2006-01-24 2009-07-02 イー．エム．ダブリュ．アンテナ カンパニー リミテッド Antenna speaker assembly and wireless communication apparatus
US8194906B2 (en) 2006-01-24 2012-06-05 Emw Co., Ltd. Antenna and speaker assembly and wireless communication device

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