JPH0431224B2 - - Google Patents

Info

Publication number
JPH0431224B2
JPH0431224B2 JP59252116A JP25211684A JPH0431224B2 JP H0431224 B2 JPH0431224 B2 JP H0431224B2 JP 59252116 A JP59252116 A JP 59252116A JP 25211684 A JP25211684 A JP 25211684A JP H0431224 B2 JPH0431224 B2 JP H0431224B2
Authority
JP
Japan
Prior art keywords
pixel
pixels
value
values
grayscale
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.)
Expired - Lifetime
Application number
JP59252116A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60190090A (ja
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 filed Critical
Publication of JPS60190090A publication Critical patent/JPS60190090A/ja
Publication of JPH0431224B2 publication Critical patent/JPH0431224B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/403—Edge-driven scaling; Edge-based scaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
JP59252116A 1984-02-21 1984-11-30 グレ−スケ−ルイメ−ジ画素処理方法 Granted JPS60190090A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US581768 1984-02-21
US06/581,768 US4599656A (en) 1984-02-21 1984-02-21 Processing of gray scale image pels to facilitate data compression

Publications (2)

Publication Number Publication Date
JPS60190090A JPS60190090A (ja) 1985-09-27
JPH0431224B2 true JPH0431224B2 (enExample) 1992-05-25

Family

ID=24326481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59252116A Granted JPS60190090A (ja) 1984-02-21 1984-11-30 グレ−スケ−ルイメ−ジ画素処理方法

Country Status (4)

Country Link
US (1) US4599656A (enExample)
EP (1) EP0154766B1 (enExample)
JP (1) JPS60190090A (enExample)
DE (1) DE3580292D1 (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8410860D0 (en) * 1984-04-27 1984-06-06 Crosfield Electronics Ltd Image modification
US5067162A (en) * 1986-06-30 1991-11-19 Identix Incorporated Method and apparatus for verifying identity using image correlation
US4679094A (en) * 1986-10-14 1987-07-07 The Associated Press Method for compression and transmission of video information
USH996H (en) 1987-01-20 1991-11-05 Recognition Equipment Incorporated High resolution page image display system
US4785356A (en) * 1987-04-24 1988-11-15 International Business Machines Corporation Apparatus and method of attenuating distortion introduced by a predictive coding image compressor
US4868670A (en) * 1987-07-24 1989-09-19 Eastman Kodak Company Apparatus and method for improving the compressibility of an enhanced image through use of a momentarily varying threshold level
US4924322A (en) * 1988-03-18 1990-05-08 Matsushita Electric Industrial Co., Ltd. Bi-level image display signal processing apparatus
JP2651493B2 (ja) * 1990-11-21 1997-09-10 スターリング ドライ イメイジング，インコーポレイテッド 印刷装置及び方法
US5170261A (en) * 1990-11-21 1992-12-08 Polaroid Corporation Printing method
US5359432A (en) * 1991-11-25 1994-10-25 Lexmark International, Inc. Printer page composition with color and text
JPH06276520A (ja) * 1993-03-22 1994-09-30 Sony Corp 画像処理装置
US5838838A (en) * 1996-07-19 1998-11-17 Hewlett-Packard Company Down-scaling technique for bi-level images
US6091432A (en) * 1998-03-31 2000-07-18 Hewlett-Packard Company Method and apparatus for improved block transfers in computer graphics frame buffers
JP4018310B2 (ja) * 1999-04-21 2007-12-05 株式会社リコー 画像二値化装置、画像撮像装置、画像二値化方法、画像撮像方法およびその方法の各工程としてコンピュータを機能させるためのプログラムを記録したコンピュータ読取可能な記録媒体
US7715656B2 (en) * 2004-09-28 2010-05-11 Qualcomm Incorporated Magnification and pinching of two-dimensional images
JP5742427B2 (ja) * 2011-04-25 2015-07-01 富士ゼロックス株式会社 画像処理装置
KR102533723B1 (ko) * 2018-09-14 2023-05-18 삼성전자주식회사 전자 장치 및 그 제어 방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280144A (en) * 1979-12-03 1981-07-21 International Business Machines Corporation Coarse scan/fine print algorithm
JPS56159767A (en) * 1980-05-14 1981-12-09 Ricoh Co Ltd Picture processing method
DE3121599C2 (de) * 1981-05-30 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und Schaltungsanordnung zum Verdecken von Fehlern in einem digitalen Videosignal
JPS58215869A (ja) * 1982-06-07 1983-12-15 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション グレ−スケ−ル映像デ−タを縮少する方法
US4532651A (en) * 1982-09-30 1985-07-30 International Business Machines Corporation Data filter and compression apparatus and method
US4504864A (en) * 1982-12-30 1985-03-12 International Business Machines Corporation Nonlinear filtering of gray scale images

Also Published As

Publication number Publication date
US4599656A (en) 1986-07-08
EP0154766A3 (en) 1988-09-21
EP0154766A2 (en) 1985-09-18
DE3580292D1 (de) 1990-12-06
JPS60190090A (ja) 1985-09-27
EP0154766B1 (en) 1990-10-31

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