JPS6467074A - Binarization circuit for picture signal - Google Patents

Binarization circuit for picture signal

Info

Publication number
JPS6467074A
JPS6467074A JP62222129A JP22212987A JPS6467074A JP S6467074 A JPS6467074 A JP S6467074A JP 62222129 A JP62222129 A JP 62222129A JP 22212987 A JP22212987 A JP 22212987A JP S6467074 A JPS6467074 A JP S6467074A
Authority
JP
Japan
Prior art keywords
picture
deciding
slice level
area
binarization
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
JP62222129A
Other languages
Japanese (ja)
Inventor
Yoshihiro Wada
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62222129A priority Critical patent/JPS6467074A/en
Publication of JPS6467074A publication Critical patent/JPS6467074A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a high definition picture quality by deciding the effective picture area of a film face from input picture data, forming a density histogram only from the decided effective picture area, and deciding a slice level for a binarization from the density histogram. CONSTITUTION:A size deciding means 103 for deciding the picture size of the picture based on the deciding result of the incoming of the effective picture area by an area deciding means 102 and a binarization means 105 for binarizing the picture data inputted from a picture reading means 101 according to a second slice level set by a slice level setting means 104 are provided. The effective picture area of the film face is decided from the input picture data, the density histogram is formed only from the decided effective picture area and the slice level for the binarization is decided from the density histogram. Thereby, the slice level of the binarization can take an extremely proper value corresponding to an original picture to obtain the high definition picture quality having no base cover, the collapse of a character, for instance.
JP62222129A 1987-09-07 1987-09-07 Binarization circuit for picture signal Pending JPS6467074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62222129A JPS6467074A (en) 1987-09-07 1987-09-07 Binarization circuit for picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62222129A JPS6467074A (en) 1987-09-07 1987-09-07 Binarization circuit for picture signal

Publications (1)

Publication Number Publication Date
JPS6467074A true JPS6467074A (en) 1989-03-13

Family

ID=16777622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222129A Pending JPS6467074A (en) 1987-09-07 1987-09-07 Binarization circuit for picture signal

Country Status (1)

Country Link
JP (1) JPS6467074A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6760489B1 (en) 1998-04-06 2004-07-06 Seiko Epson Corporation Apparatus and method for image data interpolation and medium on which image data interpolation program is recorded

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6760489B1 (en) 1998-04-06 2004-07-06 Seiko Epson Corporation Apparatus and method for image data interpolation and medium on which image data interpolation program is recorded

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