DE3381972D1 - Verfahren und apparat zum filtern von grauskalabilddaten. - Google Patents

Verfahren und apparat zum filtern von grauskalabilddaten.

Info

Publication number
DE3381972D1
DE3381972D1 DE8383105703T DE3381972T DE3381972D1 DE 3381972 D1 DE3381972 D1 DE 3381972D1 DE 8383105703 T DE8383105703 T DE 8383105703T DE 3381972 T DE3381972 T DE 3381972T DE 3381972 D1 DE3381972 D1 DE 3381972D1
Authority
DE
Germany
Prior art keywords
image data
gray scale
scale image
filtering gray
filtering
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
DE8383105703T
Other languages
German (de)
English (en)
Inventor
Pennebaker, Jr
Keith Samuel Pennington
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3381972D1 publication Critical patent/DE3381972D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
DE8383105703T 1982-09-30 1983-06-10 Verfahren und apparat zum filtern von grauskalabilddaten. Expired - Lifetime DE3381972D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/429,658 US4532651A (en) 1982-09-30 1982-09-30 Data filter and compression apparatus and method

Publications (1)

Publication Number Publication Date
DE3381972D1 true DE3381972D1 (de) 1990-12-06

Family

ID=23704186

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383105703T Expired - Lifetime DE3381972D1 (de) 1982-09-30 1983-06-10 Verfahren und apparat zum filtern von grauskalabilddaten.

Country Status (4)

Country Link
US (1) US4532651A (enExample)
EP (1) EP0105085B1 (enExample)
JP (1) JPS5970368A (enExample)
DE (1) DE3381972D1 (enExample)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558370A (en) * 1983-11-21 1985-12-10 International Business Machines Corporation Image processing method for graphics images
US4599656A (en) * 1984-02-21 1986-07-08 International Business Machines Corporation Processing of gray scale image pels to facilitate data compression
US4637059A (en) * 1984-08-13 1987-01-13 Recognition Equipment Incorporated Video filter for video format unit
US4777620A (en) * 1985-02-20 1988-10-11 Elscint Ltd. Data compression system
USH996H (en) 1987-01-20 1991-11-05 Recognition Equipment Incorporated High resolution page image display system
US4941057A (en) * 1988-10-24 1990-07-10 Xerox Corporation Digital image proofing
US4970604A (en) * 1989-04-14 1990-11-13 Coueignoux Philippe J Screen display enhancing system
US5065149A (en) * 1989-11-09 1991-11-12 Document Technologies, Inc. Scanned document image resolution enhancement
US5060284A (en) * 1990-03-23 1991-10-22 Eastman Kodak Company Adaptive error diffusion thresholding for document images
US5359432A (en) * 1991-11-25 1994-10-25 Lexmark International, Inc. Printer page composition with color and text
US5416857A (en) * 1992-10-21 1995-05-16 International Business Machines Corporation Apparatus and method for compressing data while retaining image integrity
US5317418A (en) * 1993-05-11 1994-05-31 Hewlett-Packard Company Halftone images using special filters
US5838838A (en) * 1996-07-19 1998-11-17 Hewlett-Packard Company Down-scaling technique for bi-level images
US6310975B1 (en) * 1998-10-01 2001-10-30 Sharewave, Inc. Method and apparatus for digital data compression
US9704502B2 (en) 2004-07-30 2017-07-11 Invention Science Fund I, Llc Cue-aware privacy filter for participants in persistent communications
US9779750B2 (en) * 2004-07-30 2017-10-03 Invention Science Fund I, Llc Cue-aware privacy filter for participants in persistent communications

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700797A (en) * 1969-12-31 1972-10-24 Electronic Image Systems Corp Facsimile noise deletion and coding system
US4210936A (en) * 1977-12-27 1980-07-01 Pitney Bowes Inc. Method and apparatus for reproducing an original gray scale image
US4301443A (en) * 1979-09-10 1981-11-17 Environmental Research Institute Of Michigan Bit enable circuitry for an image analyzer system
US4280144A (en) * 1979-12-03 1981-07-21 International Business Machines Corporation Coarse scan/fine print algorithm
GB2092407B (en) * 1981-02-04 1984-08-08 Crosfield Electronics Ltd Image reproduction method and apparatus

Also Published As

Publication number Publication date
JPH0134496B2 (enExample) 1989-07-19
US4532651A (en) 1985-07-30
EP0105085A3 (en) 1987-02-25
EP0105085A2 (en) 1984-04-11
JPS5970368A (ja) 1984-04-20
EP0105085B1 (en) 1990-10-31

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee