JPS56140461A - Picture processing method - Google Patents

Picture processing method

Info

Publication number
JPS56140461A
JPS56140461A JP4393980A JP4393980A JPS56140461A JP S56140461 A JPS56140461 A JP S56140461A JP 4393980 A JP4393980 A JP 4393980A JP 4393980 A JP4393980 A JP 4393980A JP S56140461 A JPS56140461 A JP S56140461A
Authority
JP
Japan
Prior art keywords
picture
subtraction
coefficient
picture element
addition
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
JP4393980A
Other languages
Japanese (ja)
Inventor
Kenichi Takahashi
Akio Teranishi
Eizo Yamaga
Michio Watanabe
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.)
Panasonic Holdings Corp
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Matsushita Electric Industrial 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 Tokyo Electric Power Co Inc, Matsushita Electric Industrial Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP4393980A priority Critical patent/JPS56140461A/en
Publication of JPS56140461A publication Critical patent/JPS56140461A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators

Landscapes

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

Abstract

PURPOSE:To shorten operation time considerably, by using an approximate value to the coefficient to perform digital operation using only addition and subtraction, in a picture processing method where a two-dimensional digital filter is applied to improve the transfer function. CONSTITUTION:In case that the two-dimensional digital filter is applied to respective picture elements to improve the picture quality, the coefficient of the center picture element is assumed to 1, and coefficients of picture elements around it are approximated to I2-N in the form. Therefore, since operation of multiplication the picture element signal by the coefficient and addition and subtraction for the center picture element are substituted with a simple operation of shifting bits by N and addition and subtraction for the center picture element, the operation time is shortened considerably.
JP4393980A 1980-04-02 1980-04-02 Picture processing method Pending JPS56140461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4393980A JPS56140461A (en) 1980-04-02 1980-04-02 Picture processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4393980A JPS56140461A (en) 1980-04-02 1980-04-02 Picture processing method

Publications (1)

Publication Number Publication Date
JPS56140461A true JPS56140461A (en) 1981-11-02

Family

ID=12677661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4393980A Pending JPS56140461A (en) 1980-04-02 1980-04-02 Picture processing method

Country Status (1)

Country Link
JP (1) JPS56140461A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058776A (en) * 1983-09-12 1985-04-04 Ricoh Co Ltd Picture reader
JPS6080368A (en) * 1983-10-11 1985-05-08 Ricoh Co Ltd Binary coding device of picture signal
EP1918874A3 (en) * 2006-10-31 2010-03-10 Seiko Epson Corporation Filter circuit, image processing circuit, and filtering method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022545A (en) * 1973-06-27 1975-03-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022545A (en) * 1973-06-27 1975-03-11

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058776A (en) * 1983-09-12 1985-04-04 Ricoh Co Ltd Picture reader
JPS6080368A (en) * 1983-10-11 1985-05-08 Ricoh Co Ltd Binary coding device of picture signal
EP1918874A3 (en) * 2006-10-31 2010-03-10 Seiko Epson Corporation Filter circuit, image processing circuit, and filtering method
US8155469B2 (en) 2006-10-31 2012-04-10 Seiko Epson Corporation Filter circuit, image processing circuit, and filtering method

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