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JPS5672576A - Picture contracting method - Google Patents

Picture contracting method

Info

Publication number
JPS5672576A
JPS5672576A JP14966879A JP14966879A JPS5672576A JP S5672576 A JPS5672576 A JP S5672576A JP 14966879 A JP14966879 A JP 14966879A JP 14966879 A JP14966879 A JP 14966879A JP S5672576 A JPS5672576 A JP S5672576A
Authority
JP
Japan
Prior art keywords
picture
rom
data
picture elements
string
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.)
Granted
Application number
JP14966879A
Other languages
Japanese (ja)
Other versions
JPS646587B2 (en
Inventor
Mamoru Maeda
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.)
Ricoh Co Ltd
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 JP14966879A priority Critical patent/JPS5672576A/en
Publication of JPS5672576A publication Critical patent/JPS5672576A/en
Publication of JPS646587B2 publication Critical patent/JPS646587B2/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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To obtain a contracted picture of high quality by contracting the picture by converting a string of picture elements, obtained by sampling an original picture, into a string of picture elements differing in pitch from sampled picture elements. CONSTITUTION:Data signal DATA of picture elements for every line is read into shift register SR, whose parallel outpusts S1-S4 are sent to ROM. Output (r) of quinary counter CNT is sent to ROM as a signal indicating the position of a converted picture element. Then, ROM reads a prescribed arithmetic result according to signal (r) and sends its output signal to shift register TSR. Register TSR reads and shifts data from ROM and outputs contracted picture data O'. Thus, the contracted picture of high quality can be obtained by eliminating constant arithmetic processing that considers weight coefficients at adjacent picture-element positions in the string of sampled picture elements.
JP14966879A 1979-11-19 1979-11-19 Picture contracting method Granted JPS5672576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14966879A JPS5672576A (en) 1979-11-19 1979-11-19 Picture contracting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14966879A JPS5672576A (en) 1979-11-19 1979-11-19 Picture contracting method

Publications (2)

Publication Number Publication Date
JPS5672576A true JPS5672576A (en) 1981-06-16
JPS646587B2 JPS646587B2 (en) 1989-02-03

Family

ID=15480220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14966879A Granted JPS5672576A (en) 1979-11-19 1979-11-19 Picture contracting method

Country Status (1)

Country Link
JP (1) JPS5672576A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189762A (en) * 1982-04-30 1983-11-05 Hitachi Ltd Image scaling method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339093A (en) * 1976-09-22 1978-04-10 Hitachi Ltd Production of silicon gate complementary type mis semiconductor device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339093A (en) * 1976-09-22 1978-04-10 Hitachi Ltd Production of silicon gate complementary type mis semiconductor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189762A (en) * 1982-04-30 1983-11-05 Hitachi Ltd Image scaling method
JPH0420224B2 (en) * 1982-04-30 1992-04-02 Hitachi Ltd

Also Published As

Publication number Publication date
JPS646587B2 (en) 1989-02-03

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