JPS6180969A - Picture signal processor - Google Patents

Picture signal processor

Info

Publication number
JPS6180969A
JPS6180969A JP59201868A JP20186884A JPS6180969A JP S6180969 A JPS6180969 A JP S6180969A JP 59201868 A JP59201868 A JP 59201868A JP 20186884 A JP20186884 A JP 20186884A JP S6180969 A JPS6180969 A JP S6180969A
Authority
JP
Japan
Prior art keywords
image
processing part
halftone dot
image processing
signal
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
JP59201868A
Other versions
JPH0457274B2 (en
Inventor
Masami Kurata
Taiji Nagaoka
Hiroyuki Saito
Original Assignee
Fuji Xerox Co Ltd
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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP59201868A priority Critical patent/JPH0457274B2/ja
Publication of JPS6180969A publication Critical patent/JPS6180969A/en
Publication of JPH0457274B2 publication Critical patent/JPH0457274B2/ja
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Abstract

PURPOSE: To secure the sharpness with respect to all of a character image, a photograph image, and a halftone dot image by discriminating a net halftone dot image and other character image part from a photographic image part in which a halftone is represented, and executing an optimum signal processing with regard to each of them.
CONSTITUTION: An analog picture signal 32 from an image sensor 31 is converted to a digital signal 34 of 6 bits by an A/D converter 33, and supplied to a halftone dot image processing part 36, a photographic image processing part 37 and a character image processing part 38, respectively. Also, the digital picture signal 34 is supplied to a deciding circuit 35, and in this circuit, at every prescribed signal processing area, to which said signal belongs, (1) a character image, (2) a photographic image, or (3) a halftone dot image is decided. A result of this decision is sent to a multiplexer 47, by which one output of the halftone dot image processing part 36, the photographic image processing part 37, and the character image processing part 38 is selected and outputted.
COPYRIGHT: (C)1986,JPO&Japio
JP59201868A 1984-09-28 1984-09-28 Expired - Lifetime JPH0457274B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59201868A JPH0457274B2 (en) 1984-09-28 1984-09-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59201868A JPH0457274B2 (en) 1984-09-28 1984-09-28

Publications (2)

Publication Number Publication Date
JPS6180969A true JPS6180969A (en) 1986-04-24
JPH0457274B2 JPH0457274B2 (en) 1992-09-11

Family

ID=16448216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59201868A Expired - Lifetime JPH0457274B2 (en) 1984-09-28 1984-09-28

Country Status (1)

Country Link
JP (1) JPH0457274B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63250274A (en) * 1987-04-06 1988-10-18 Matsushita Graphic Commun Syst Inc Picture signal processor
JPH0296473A (en) * 1988-09-30 1990-04-09 Matsushita Graphic Commun Syst Inc Picture signal processor
US4926251A (en) * 1987-04-07 1990-05-15 Kabushiki Kaisha Toshiba Color image processing apparatus with image corrector
JP2005025743A (en) * 2003-06-30 2005-01-27 Xerox Corp System and method for analyzing printed image and machine readable medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753179A (en) * 1980-09-16 1982-03-30 Ricoh Co Ltd Picture processing
JPS5875374A (en) * 1981-09-10 1983-05-07 Xerox Corp Device and method of scanning image
JPS5955581A (en) * 1982-09-22 1984-03-30 Nippon Telegr & Teleph Corp <Ntt> Region separating method of printed document picture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753179A (en) * 1980-09-16 1982-03-30 Ricoh Co Ltd Picture processing
JPS5875374A (en) * 1981-09-10 1983-05-07 Xerox Corp Device and method of scanning image
JPS5955581A (en) * 1982-09-22 1984-03-30 Nippon Telegr & Teleph Corp <Ntt> Region separating method of printed document picture

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63250274A (en) * 1987-04-06 1988-10-18 Matsushita Graphic Commun Syst Inc Picture signal processor
US4926251A (en) * 1987-04-07 1990-05-15 Kabushiki Kaisha Toshiba Color image processing apparatus with image corrector
JPH0296473A (en) * 1988-09-30 1990-04-09 Matsushita Graphic Commun Syst Inc Picture signal processor
JPH0568146B2 (en) * 1988-09-30 1993-09-28 Matsushita Graphic Communic
JP2005025743A (en) * 2003-06-30 2005-01-27 Xerox Corp System and method for analyzing printed image and machine readable medium
JP4619703B2 (en) * 2003-06-30 2011-01-26 ゼロックス コーポレイションXerox Corporation Method, system and machine-readable medium for analyzing printed images

Also Published As

Publication number Publication date
JPH0457274B2 (en) 1992-09-11

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