JPS6473973A - Image area separating device - Google Patents

Image area separating device

Info

Publication number
JPS6473973A
JPS6473973A JP62231549A JP23154987A JPS6473973A JP S6473973 A JPS6473973 A JP S6473973A JP 62231549 A JP62231549 A JP 62231549A JP 23154987 A JP23154987 A JP 23154987A JP S6473973 A JPS6473973 A JP S6473973A
Authority
JP
Japan
Prior art keywords
level
black
white
picture
dot
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
JP62231549A
Other languages
Japanese (ja)
Inventor
Hiroyuki Matsushita
Hironori Takashima
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62231549A priority Critical patent/JPS6473973A/en
Publication of JPS6473973A publication Critical patent/JPS6473973A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)

Abstract

PURPOSE:To contrive to improve the separation accuracy by applying a method utilizing two ways of threshold and a method utilizing the periodicity of a dot in parallel so as to compensate a defect of the method separating a dot picture area from a line drawing area depending on the existence of a closed area specific to a dot picture. CONSTITUTION:Thin line picture ensuring circuits 12A-12C provided with a reference window for main scanning one picture element and subscanning three picture elements are used and in the presence of a level pattern as 'white/ black/white', the last 'white' level is converted into 'black' level. In case of the presence of level pattern of 'black/white/black' conversely, the last 'black' level is converted into 'white' level. Even when one picture element is interleaved respectively in main and subscanning directions by interleave circuits 13A-13C, no open thin line is caused. After the processing above, the image area separation utilizing the periodicity of dot and the image area separation using a closed area are applied. Thus, the separation accuracy is improved.
JP62231549A 1987-09-16 1987-09-16 Image area separating device Pending JPS6473973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62231549A JPS6473973A (en) 1987-09-16 1987-09-16 Image area separating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62231549A JPS6473973A (en) 1987-09-16 1987-09-16 Image area separating device

Publications (1)

Publication Number Publication Date
JPS6473973A true JPS6473973A (en) 1989-03-20

Family

ID=16925234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62231549A Pending JPS6473973A (en) 1987-09-16 1987-09-16 Image area separating device

Country Status (1)

Country Link
JP (1) JPS6473973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019088088A1 (en) 2017-10-31 2019-05-09 株式会社Adeka Slurry composition, and electrode using slurry composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019088088A1 (en) 2017-10-31 2019-05-09 株式会社Adeka Slurry composition, and electrode using slurry composition

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