CA1262279A - Method for processing bi-level image data - Google Patents

Method for processing bi-level image data

Info

Publication number
CA1262279A
CA1262279A CA000484634A CA484634A CA1262279A CA 1262279 A CA1262279 A CA 1262279A CA 000484634 A CA000484634 A CA 000484634A CA 484634 A CA484634 A CA 484634A CA 1262279 A CA1262279 A CA 1262279A
Authority
CA
Canada
Prior art keywords
distance
image data
scan line
pattern
absolute value
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
Application number
CA000484634A
Other languages
English (en)
French (fr)
Inventor
Eisuke Kanzaki
Yutaka Shimizu
Hideo Asano
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 CA1262279A publication Critical patent/CA1262279A/en
Expired 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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CA000484634A 1984-10-24 1985-06-20 Method for processing bi-level image data Expired CA1262279A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59222292A JPS61102872A (ja) 1984-10-24 1984-10-24 ２レベル・イメ−ジ・デ−タの処理方法
JP59-222292 1984-10-24

Publications (1)

Publication Number Publication Date
CA1262279A true CA1262279A (en) 1989-10-10

Family

ID=16780078

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000484634A Expired CA1262279A (en) 1984-10-24 1985-06-20 Method for processing bi-level image data

Country Status (5)

Country Link
US (1) US4757552A (enExample)
EP (1) EP0179291B1 (enExample)
JP (1) JPS61102872A (enExample)
CA (1) CA1262279A (enExample)
DE (1) DE3575510D1 (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947447A (en) * 1986-04-24 1990-08-07 Hitachi, Ltd. Method for data coding
US4760459A (en) * 1986-07-30 1988-07-26 Kabushiki Kaisha Toshiba Binary data compression and expansion processing apparatus
GB8708010D0 (en) * 1987-04-03 1987-05-07 Crosfield Electronics Ltd Image reprocessing
JP2670273B2 (ja) * 1987-09-30 1997-10-29 株式会社東芝 画像処理装置
JPH02179071A (ja) * 1988-12-28 1990-07-12 Fuji Photo Film Co Ltd 画像圧縮装置
EP1353494A3 (en) 1990-03-16 2004-07-28 Canon Kabushiki Kaisha Image encoding and recording apparatus
EP0469716B1 (en) * 1990-07-03 1997-04-23 Canon Kabushiki Kaisha Image processing apparatus
CA2063495C (en) * 1991-10-03 1999-03-30 John O. G. Vieth Method and system for compressing data in a multi-channel image processing system
CA2063621C (en) * 1991-10-03 1999-03-16 Wayne M. Doran Method and modular system for high speed processing of item images
JP3428063B2 (ja) * 1993-04-16 2003-07-22 富士写真フイルム株式会社 画像データの階調変換方法および装置
CA2227062C (en) 1996-05-17 2002-08-13 Shinya Kadono Image encoding apparatus, image decoding apparatus, image encoding method, image decoding method, image encoding program recording medium and image decoding program recording medium
US6795211B1 (en) * 1999-11-04 2004-09-21 Xerox Corporation Resolution enhancement of compressed image data

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450073A1 (de) * 1974-10-22 1976-05-06 Licentia Gmbh Vorverzerrer zur aufbereitung von runs vor einer rl-codierung
US4291339A (en) * 1977-05-16 1981-09-22 Ricoh Company, Ltd. Facsimile transceiver
US4204232A (en) * 1977-07-08 1980-05-20 Nippon Electric Co., Ltd. Pattern transmission system comprising an encoder for encoding partial thinned patterns in two scanning lines along only one boundary line
US4229768A (en) * 1978-03-30 1980-10-21 Canon Kabushiki Kaisha Information processing apparatus
US4300122A (en) * 1979-04-02 1981-11-10 Sperry Corporation Apparatus for processing digital data representative of a two-dimensional image
US4307377A (en) * 1979-11-09 1981-12-22 Bell Telephone Laboratories, Incorporated Vector coding of computer graphics material
JPS5888970A (ja) * 1981-11-24 1983-05-27 Ricoh Co Ltd フアクシミリデ−タ圧縮装置

Also Published As

Publication number Publication date
DE3575510D1 (de) 1990-02-22
JPH0422392B2 (enExample) 1992-04-16
US4757552A (en) 1988-07-12
EP0179291B1 (en) 1990-01-17
EP0179291A2 (en) 1986-04-30
JPS61102872A (ja) 1986-05-21
EP0179291A3 (en) 1987-06-16

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