JPS5630361A - Picture processing method - Google Patents

Picture processing method

Info

Publication number
JPS5630361A
JPS5630361A JP10514479A JP10514479A JPS5630361A JP S5630361 A JPS5630361 A JP S5630361A JP 10514479 A JP10514479 A JP 10514479A JP 10514479 A JP10514479 A JP 10514479A JP S5630361 A JPS5630361 A JP S5630361A
Authority
JP
Japan
Prior art keywords
picture
areas
density
memory
sent
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
JP10514479A
Other languages
Japanese (ja)
Other versions
JPS6117432B2 (en
Inventor
Koichi Ejiri
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 JP10514479A priority Critical patent/JPS5630361A/en
Publication of JPS5630361A publication Critical patent/JPS5630361A/en
Publication of JPS6117432B2 publication Critical patent/JPS6117432B2/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
    • H04N1/40—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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To make it possible to obtain a reproduced picture of excellent resolution and sharpness by performing arithmetic processing to a fixed density as to read picture-element information. CONSTITUTION:An input picture-element signal from a scanner is quantized by A/ D converter 1 into a quinary signal, which is sent to memory 3 and each picture element information on specific picture-element areas of three by three is collected and stored, thereby determining the density level of each small picture element when arithmetic circuit 3 converts the same areas into small picture-element areas of six by six in accordance with the memory contents. Next, each small picture-element information processed to a high picture-element density is sent to memory 4, whose memory contents are transferred successively to arithmetic circuit 6 by way of gate 5 to determine the density level of each intermediate picture element when the same areas are converted into intermediate picture-element areas of four by four. Then, each intermediate picture-element information processed to a low picture-element density is stored in memory 7 and then sent to the plotter successively, reproducing the picture.
JP10514479A 1979-08-18 1979-08-18 Picture processing method Granted JPS5630361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10514479A JPS5630361A (en) 1979-08-18 1979-08-18 Picture processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10514479A JPS5630361A (en) 1979-08-18 1979-08-18 Picture processing method

Publications (2)

Publication Number Publication Date
JPS5630361A true JPS5630361A (en) 1981-03-26
JPS6117432B2 JPS6117432B2 (en) 1986-05-07

Family

ID=14399535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10514479A Granted JPS5630361A (en) 1979-08-18 1979-08-18 Picture processing method

Country Status (1)

Country Link
JP (1) JPS5630361A (en)

Also Published As

Publication number Publication date
JPS6117432B2 (en) 1986-05-07

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