JPS579166A - Picture shrinking device - Google Patents

Picture shrinking device

Info

Publication number
JPS579166A
JPS579166A JP8330280A JP8330280A JPS579166A JP S579166 A JPS579166 A JP S579166A JP 8330280 A JP8330280 A JP 8330280A JP 8330280 A JP8330280 A JP 8330280A JP S579166 A JPS579166 A JP S579166A
Authority
JP
Japan
Prior art keywords
density
shrinking
information
rom7
surrounding
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
JP8330280A
Other languages
Japanese (ja)
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 JP8330280A priority Critical patent/JPS579166A/en
Publication of JPS579166A publication Critical patent/JPS579166A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image
    • G06T3/40—Scaling the whole image or part thereof
    • 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
    • H04N1/40068—Modification of image resolution, i.e. determining the values of picture elements at new relative positions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To omit the operating process for 2-dimensional shrinkage, by deciding an address according to the density information of video elements around the converted video elements to be the object of shrinkage and scheduled shrinking factor, and reading out the density information of specific video element from a ROM. CONSTITUTION:Density levels Qs1-Qs4 for 4 original video elements at the surrounding and a density level Qp for the converted video element P according to various shrinking factors are stored in a ROM7. Thus, the specific density level Qp is read out from the ROM7 according to the combination of the original video element information Qs1-Qs4 at the surrounding picked up with the 1st and 2nd shift registers 1, 3 and the shrinking factor d specified by a shrinking factor setter 4.
JP8330280A 1980-06-19 1980-06-19 Picture shrinking device Pending JPS579166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8330280A JPS579166A (en) 1980-06-19 1980-06-19 Picture shrinking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8330280A JPS579166A (en) 1980-06-19 1980-06-19 Picture shrinking device

Publications (1)

Publication Number Publication Date
JPS579166A true JPS579166A (en) 1982-01-18

Family

ID=13798607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8330280A Pending JPS579166A (en) 1980-06-19 1980-06-19 Picture shrinking device

Country Status (1)

Country Link
JP (1) JPS579166A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184871A (en) * 1982-04-15 1983-10-28 Konishiroku Photo Ind Co Ltd Method and apparatus of picture element density conversion
JPS58189762A (en) * 1982-04-30 1983-11-05 Hitachi Ltd Picture magnifying and reducing system
JPS5975758A (en) * 1982-09-30 1984-04-28 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Image filter converting method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184871A (en) * 1982-04-15 1983-10-28 Konishiroku Photo Ind Co Ltd Method and apparatus of picture element density conversion
JPS58189762A (en) * 1982-04-30 1983-11-05 Hitachi Ltd Picture magnifying and reducing system
JPH0420224B2 (en) * 1982-04-30 1992-04-02 Hitachi Ltd
JPS5975758A (en) * 1982-09-30 1984-04-28 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Image filter converting method

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