JPH10221648A5 - - Google Patents

Info

Publication number
JPH10221648A5
JPH10221648A5 JP1997340704A JP34070497A JPH10221648A5 JP H10221648 A5 JPH10221648 A5 JP H10221648A5 JP 1997340704 A JP1997340704 A JP 1997340704A JP 34070497 A JP34070497 A JP 34070497A JP H10221648 A5 JPH10221648 A5 JP H10221648A5
Authority
JP
Japan
Prior art keywords
spatial
light
image
frequency
filtering
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
JP1997340704A
Other languages
English (en)
Japanese (ja)
Other versions
JPH10221648A (ja
JP4054424B2 (ja
Filing date
Publication date
Priority claimed from US08/756,662 external-priority patent/US5959776A/en
Application filed filed Critical
Publication of JPH10221648A publication Critical patent/JPH10221648A/ja
Publication of JPH10221648A5 publication Critical patent/JPH10221648A5/ja
Application granted granted Critical
Publication of JP4054424B2 publication Critical patent/JP4054424B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP34070497A 1996-11-26 1997-11-26 光学レンズ又はミラートレインにおけるフーリエ操作の方法及び装置 Expired - Fee Related JP4054424B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/756,662 US5959776A (en) 1996-11-26 1996-11-26 Method and apparatus of Fourier manipulation in an optic lens or mirror train
US756,662 1996-11-26

Publications (3)

Publication Number Publication Date
JPH10221648A JPH10221648A (ja) 1998-08-21
JPH10221648A5 true JPH10221648A5 (enExample) 2005-07-14
JP4054424B2 JP4054424B2 (ja) 2008-02-27

Family

ID=25044491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34070497A Expired - Fee Related JP4054424B2 (ja) 1996-11-26 1997-11-26 光学レンズ又はミラートレインにおけるフーリエ操作の方法及び装置

Country Status (2)

Country Link
US (1) US5959776A (enExample)
JP (1) JP4054424B2 (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6650476B1 (en) * 1999-02-25 2003-11-18 Lester Frank Ludwig Image processing utilizing non-positive-definite transfer functions via fractional fourier transform
US7054504B2 (en) * 1999-02-25 2006-05-30 Ludwig Lester F Relative optical path phase reconstruction in the correction of misfocused images using fractional powers of the fourier transform
US7039252B2 (en) * 1999-02-25 2006-05-02 Ludwig Lester F Iterative approximation environments for modeling the evolution of an image propagating through a physical medium in restoration and other applications
US6762882B2 (en) * 2002-11-14 2004-07-13 Agfa Corporation System and method for use of dark field fourier diaphragm in multi-frequency imaging
US8031969B1 (en) * 2004-09-07 2011-10-04 Nvidia Corporation Fourier transform optimized anisotropic filtering
US20060056729A1 (en) * 2004-09-15 2006-03-16 Hillis W D Fourier domain camera
JP5080414B2 (ja) * 2008-09-30 2012-11-21 富士通フロンテック株式会社 情報読取用撮像装置
CN112987528B (zh) * 2021-03-08 2022-03-22 昆明理工大学 一种基于4f系统实现环形光进行边缘提取的方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729252A (en) * 1970-06-05 1973-04-24 Eastman Kodak Co Optical spatial filtering with multiple light sources
US3700902A (en) * 1971-01-13 1972-10-24 Itek Corp Optical information processing using variable electro-optic spatial filter
US4370024A (en) * 1980-05-06 1983-01-25 The United States Of America As Represented By The Secretary Of The Air Force Dynamic binary fourier filtered imaging system
JPH02222921A (ja) * 1989-02-23 1990-09-05 Tokyo Electron Ltd 光学フィルタ装置
US5072314A (en) * 1990-04-04 1991-12-10 Rockwell International Corporation Image enhancement techniques using selective amplification of spatial frequency components
US5119443A (en) * 1990-06-14 1992-06-02 Bahram Javidi Nonlinear joint transform optical correlator having varying degrees of nonlinearity
US5638211A (en) * 1990-08-21 1997-06-10 Nikon Corporation Method and apparatus for increasing the resolution power of projection lithography exposure system
US5337183A (en) * 1991-02-01 1994-08-09 Yeda Research And Development Co. Ltd. Distributed resonant cavity light beam modulator
JPH0588079A (ja) * 1991-09-30 1993-04-09 Matsushita Electric Ind Co Ltd フ−リエ変換レンズおよび光情報処理装置
JP2857273B2 (ja) * 1991-12-24 1999-02-17 科学技術振興事業団 収差補正法及び収差補正装置
US5311359A (en) * 1992-12-24 1994-05-10 Litton Systems, Inc. Reflective optical correlator with a folded asymmetrical optical axis
JP3089939B2 (ja) * 1994-03-15 2000-09-18 松下電器産業株式会社 フーリエ変換光学装置
JPH07261125A (ja) * 1994-03-24 1995-10-13 Olympus Optical Co Ltd 投影型画像表示装置

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