JPS5640978A - Processing method for picture deformation - Google Patents

Processing method for picture deformation

Info

Publication number
JPS5640978A
JPS5640978A JP11582479A JP11582479A JPS5640978A JP S5640978 A JPS5640978 A JP S5640978A JP 11582479 A JP11582479 A JP 11582479A JP 11582479 A JP11582479 A JP 11582479A JP S5640978 A JPS5640978 A JP S5640978A
Authority
JP
Japan
Prior art keywords
picture
information
function
conversion
convolution
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
JP11582479A
Other languages
Japanese (ja)
Inventor
Koichi Ejiri
Morizumi Kurose
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 JP11582479A priority Critical patent/JPS5640978A/en
Publication of JPS5640978A publication Critical patent/JPS5640978A/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 transformation in the plane of the image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/4084—Transform-based scaling, e.g. FFT domain scaling

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To obtain a deformed picture having a high image resolution, by measuring the space frequency response function MTF of the 2-dimensional reproduced picture and the carrying out the convolution for both the matrix obtained by giving a Fourier conversion to the adverse characteristcs of the function MTF and the original picture to perform the deforming process. CONSTITUTION:The picture information g read out in a rough sampling interval is obtained by the convolution (convolutional integration) of g=f h and via the transmission function h of the original information f. Then the picture information g' which is obtained by giving a resampling to the information g with the picture pitch is obtained in the form of g'=F<-1>(I/H) g via the same information f and the transmission function i respectively. As a result, a deformed picture received a conversion of the picture element concentration with the picture element pitch. In this case, I means the Fourier conversion of the function i, H is the Fourier conversion of the function h, F<-1> is the Fourier adverse conversion operator, and is the convolution operator respectively.
JP11582479A 1979-09-10 1979-09-10 Processing method for picture deformation Pending JPS5640978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11582479A JPS5640978A (en) 1979-09-10 1979-09-10 Processing method for picture deformation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11582479A JPS5640978A (en) 1979-09-10 1979-09-10 Processing method for picture deformation

Publications (1)

Publication Number Publication Date
JPS5640978A true JPS5640978A (en) 1981-04-17

Family

ID=14672009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11582479A Pending JPS5640978A (en) 1979-09-10 1979-09-10 Processing method for picture deformation

Country Status (1)

Country Link
JP (1) JPS5640978A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61143879A (en) * 1984-11-19 1986-07-01 ゼネラル・エレクトリツク・カンパニイ Method and apparatus for calculating pixel value
JPS61265674A (en) * 1985-05-20 1986-11-25 Horiba Ltd Method for drawing isarithm map
JPS6478384A (en) * 1987-09-19 1989-03-23 Canon Kk Picture processing method
JPH0233676A (en) * 1988-07-23 1990-02-02 Ryoichi Mori Picture signal processor
JPH0251784A (en) * 1988-08-15 1990-02-21 Yokogawa Medical Syst Ltd Image interpolating circuit
US6024504A (en) * 1997-06-07 2000-02-15 Man Roland Druckmaschinen Ag Process for correcting geometric errors in the transfer of information to a printing stock

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61143879A (en) * 1984-11-19 1986-07-01 ゼネラル・エレクトリツク・カンパニイ Method and apparatus for calculating pixel value
JPS61265674A (en) * 1985-05-20 1986-11-25 Horiba Ltd Method for drawing isarithm map
JPS6478384A (en) * 1987-09-19 1989-03-23 Canon Kk Picture processing method
JPH0233676A (en) * 1988-07-23 1990-02-02 Ryoichi Mori Picture signal processor
JPH0251784A (en) * 1988-08-15 1990-02-21 Yokogawa Medical Syst Ltd Image interpolating circuit
US6024504A (en) * 1997-06-07 2000-02-15 Man Roland Druckmaschinen Ag Process for correcting geometric errors in the transfer of information to a printing stock

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