JPS57168580A - Picture processor - Google Patents

Picture processor

Info

Publication number
JPS57168580A
JPS57168580A JP56053284A JP5328481A JPS57168580A JP S57168580 A JPS57168580 A JP S57168580A JP 56053284 A JP56053284 A JP 56053284A JP 5328481 A JP5328481 A JP 5328481A JP S57168580 A JPS57168580 A JP S57168580A
Authority
JP
Japan
Prior art keywords
data
picture element
picture
signal
compensation
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
JP56053284A
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 JP56053284A priority Critical patent/JPS57168580A/en
Publication of JPS57168580A publication Critical patent/JPS57168580A/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 transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • 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)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To perform the displacement of a digital picture, the MTF compensation and the gradation compensation at one time, by using the same space data. CONSTITUTION:The picture signal D.IN which is sampled with every picture element and equalized is delayed by a degree equivalent to a line directly or via plural line buffers LB1-LB3 to be fed to space registers S1-S16. Thus the space data S.DATA is extracted within a specific picture element region. At the same time, the position state of a noticed picture element, i.e., an object of process is calculated by a calculating circuit and from the line synchronizing signal L.SYNC and the picture element clock CLK. Then the data is altered by the state signal SS and the data S.DATA and in accordance with the contents of process (process designating signal PC) which is designated by a data converting circuit 2. As a result, the varying magnification of a digital picture, the MTF compensation and the gradation compensation are carried out at one time.
JP56053284A 1981-04-09 1981-04-09 Picture processor Pending JPS57168580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56053284A JPS57168580A (en) 1981-04-09 1981-04-09 Picture processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56053284A JPS57168580A (en) 1981-04-09 1981-04-09 Picture processor

Publications (1)

Publication Number Publication Date
JPS57168580A true JPS57168580A (en) 1982-10-16

Family

ID=12938427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56053284A Pending JPS57168580A (en) 1981-04-09 1981-04-09 Picture processor

Country Status (1)

Country Link
JP (1) JPS57168580A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61236274A (en) * 1985-04-12 1986-10-21 Ricoh Co Ltd Processing system for image data
JPS62257276A (en) * 1986-04-30 1987-11-09 Ricoh Co Ltd Variable power processor for image data
JPS62261277A (en) * 1986-05-07 1987-11-13 Ricoh Co Ltd Variable power processor for image data

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61236274A (en) * 1985-04-12 1986-10-21 Ricoh Co Ltd Processing system for image data
JPS62257276A (en) * 1986-04-30 1987-11-09 Ricoh Co Ltd Variable power processor for image data
JPS62261277A (en) * 1986-05-07 1987-11-13 Ricoh Co Ltd Variable power processor for image data

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