JPS57137971A - Picture area extracting method - Google Patents

Picture area extracting method

Info

Publication number
JPS57137971A
JPS57137971A JP2394081A JP2394081A JPS57137971A JP S57137971 A JPS57137971 A JP S57137971A JP 2394081 A JP2394081 A JP 2394081A JP 2394081 A JP2394081 A JP 2394081A JP S57137971 A JPS57137971 A JP S57137971A
Authority
JP
Japan
Prior art keywords
picture element
coupled
processing
picture
memory
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
JP2394081A
Inventor
Koichi Ejiri
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2394081A priority Critical patent/JPS57137971A/en
Publication of JPS57137971A publication Critical patent/JPS57137971A/en
Application status is Pending legal-status Critical

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
    • G06K9/46Extraction of features or characteristics of the image
    • G06K9/4604Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes, intersections
    • G06K9/4638Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes, intersections by analysing connectivity relationships of elements of the pattern, e.g. by edge linking, by connected component or neighbouring slice analysis, by Markov Random Field [MRF] analysis

Abstract

PURPOSE:To extract a picture area containing one or more coupled picture element areas, by coupling an adjacent black picture element of a binary coded picture, and unifying these respective coupled picture element areas to a larger area. CONSTITUTION:A document is scanned by a scanner 100, and density of a picture element is read. A picture element density signal outputted from the scanner is binary coded by a quantizer 102, and is accumulated in a buffer 104 temporarily. A processor 106 executes the coupling processing of a black picture element as to a binary picture data in the buffer, and derives a coordinate data of the extracted coupled picture element area in a memory 110. The processor executes the unifying processing of the coupled picture element areas derives in the memory 110, and extracts a character line. A coordinate data of each extracted character line is outputted to the outside or is saved in the memory 110 temporarily. The picture element coupling processing and the unifying processing of the coupled picture element areas are executed by interlocking a maximum/minimum deciding circuit 108 to the processor 106 in order to raise the processing efficiency.
JP2394081A 1981-02-20 1981-02-20 Picture area extracting method Pending JPS57137971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2394081A JPS57137971A (en) 1981-02-20 1981-02-20 Picture area extracting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2394081A JPS57137971A (en) 1981-02-20 1981-02-20 Picture area extracting method

Publications (1)

Publication Number Publication Date
JPS57137971A true JPS57137971A (en) 1982-08-25

Family

ID=12124522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2394081A Pending JPS57137971A (en) 1981-02-20 1981-02-20 Picture area extracting method

Country Status (1)

Country Link
JP (1) JPS57137971A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60210069A (en) * 1984-04-02 1985-10-22 Ricoh Co Ltd Document information coding method
US5040133A (en) * 1990-01-12 1991-08-13 Hughes Aircraft Company Adaptive clusterer
JP2015215889A (en) * 2014-05-07 2015-12-03 金舷國際文創事業有限公司 Reflow type electronic book creation method and web site system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60210069A (en) * 1984-04-02 1985-10-22 Ricoh Co Ltd Document information coding method
US5040133A (en) * 1990-01-12 1991-08-13 Hughes Aircraft Company Adaptive clusterer
JP2015215889A (en) * 2014-05-07 2015-12-03 金舷國際文創事業有限公司 Reflow type electronic book creation method and web site system

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