JPS57189264A - Picture viriable magnification method - Google Patents

Picture viriable magnification method

Info

Publication number
JPS57189264A
JPS57189264A JP7310081A JP7310081A JPS57189264A JP S57189264 A JPS57189264 A JP S57189264A JP 7310081 A JP7310081 A JP 7310081A JP 7310081 A JP7310081 A JP 7310081A JP S57189264 A JPS57189264 A JP S57189264A
Authority
JP
Japan
Prior art keywords
variable magnification
main scanning
picture elements
run length
black picture
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
JP7310081A
Other languages
Japanese (ja)
Inventor
Keiji Sekikawa
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 JP7310081A priority Critical patent/JPS57189264A/en
Publication of JPS57189264A publication Critical patent/JPS57189264A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE:To reproduce with fidelity for fine lines in response to the variable magnification at all times without readucing the fine lines, by executing the variable magnification processing at each main scanning line. CONSTITUTION:As to the main scanning direction of a sampling picture obtained by scanning an original image, the position information of black picture elements and that variable magnified with th objective variable magnification are obtained by operation, and a specified data is read out from a memory 3 where a conversion run length in response to the variable magnification is stored in advance by taking the run length of the black picture elements toward the main scanning as an address. The converted run length's share read out from the variably magnified position obtained through the operation is taken as black picture elements and others are taken as white picture elements for reproduction, allowing to execute the variable magnification processing per each main scanning line.
JP7310081A 1981-05-15 1981-05-15 Picture viriable magnification method Pending JPS57189264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7310081A JPS57189264A (en) 1981-05-15 1981-05-15 Picture viriable magnification method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7310081A JPS57189264A (en) 1981-05-15 1981-05-15 Picture viriable magnification method

Publications (1)

Publication Number Publication Date
JPS57189264A true JPS57189264A (en) 1982-11-20

Family

ID=13508564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7310081A Pending JPS57189264A (en) 1981-05-15 1981-05-15 Picture viriable magnification method

Country Status (1)

Country Link
JP (1) JPS57189264A (en)

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