JPS5791071A - Picture magnifying system - Google Patents

Picture magnifying system

Info

Publication number
JPS5791071A
JPS5791071A JP55136010A JP13601080A JPS5791071A JP S5791071 A JPS5791071 A JP S5791071A JP 55136010 A JP55136010 A JP 55136010A JP 13601080 A JP13601080 A JP 13601080A JP S5791071 A JPS5791071 A JP S5791071A
Authority
JP
Japan
Prior art keywords
picture
magnification
magnified
electric
wide range
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
JP55136010A
Other languages
Japanese (ja)
Inventor
Akira Sakurai
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 JP55136010A priority Critical patent/JPS5791071A/en
Publication of JPS5791071A publication Critical patent/JPS5791071A/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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • H04N1/3935—Enlarging or reducing with 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)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Image Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To achieve a device in which the magnification can be varied continuously over a wide range, by combining an optical and an electric magnification system, in a picture processing device. CONSTITUTION:A picture is magnified with an optical system 3 within the range of magnification suitable for cost and video quality, and the magnified picture is converted into an electric video data. This picture data is magnified into a multiple or a fraction with an electric magnifier 10. Thus, the magnification can be varied continuously at a wide range, allowing to achieve excellent video quality with low cost.
JP55136010A 1980-09-30 1980-09-30 Picture magnifying system Pending JPS5791071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55136010A JPS5791071A (en) 1980-09-30 1980-09-30 Picture magnifying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55136010A JPS5791071A (en) 1980-09-30 1980-09-30 Picture magnifying system

Publications (1)

Publication Number Publication Date
JPS5791071A true JPS5791071A (en) 1982-06-07

Family

ID=15165067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55136010A Pending JPS5791071A (en) 1980-09-30 1980-09-30 Picture magnifying system

Country Status (1)

Country Link
JP (1) JPS5791071A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912665A (en) * 1982-07-13 1984-01-23 Nec Corp Device for magnifying bit pattern and compensating oblique line
JPS61181272A (en) * 1985-02-07 1986-08-13 Oki Electric Ind Co Ltd Picture processing method
JPS61242466A (en) * 1985-04-19 1986-10-28 Ricoh Co Ltd Image variable power system
JPS6346065A (en) * 1986-08-13 1988-02-26 Fuji Photo Film Co Ltd Image magnification changing method
US4812915A (en) * 1986-03-28 1989-03-14 Minolta Camera Kabushiki Kaisha Image reading apparatus which eliminates moire patterns by magnifying an image optically and reducing it electrically
US4893195A (en) * 1987-08-27 1990-01-09 Minolta Camera Kabushiki Kaisha Image processing apparatus capable of eliminating moire pattern
US4939590A (en) * 1987-08-28 1990-07-03 Minolta Camera Kabushiki Kaisha Image reading apparatus capable of eliminating moire pattern

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912665A (en) * 1982-07-13 1984-01-23 Nec Corp Device for magnifying bit pattern and compensating oblique line
JPS61181272A (en) * 1985-02-07 1986-08-13 Oki Electric Ind Co Ltd Picture processing method
JPS61242466A (en) * 1985-04-19 1986-10-28 Ricoh Co Ltd Image variable power system
US4812915A (en) * 1986-03-28 1989-03-14 Minolta Camera Kabushiki Kaisha Image reading apparatus which eliminates moire patterns by magnifying an image optically and reducing it electrically
JPS6346065A (en) * 1986-08-13 1988-02-26 Fuji Photo Film Co Ltd Image magnification changing method
US4893195A (en) * 1987-08-27 1990-01-09 Minolta Camera Kabushiki Kaisha Image processing apparatus capable of eliminating moire pattern
US4939590A (en) * 1987-08-28 1990-07-03 Minolta Camera Kabushiki Kaisha Image reading apparatus capable of eliminating moire pattern

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