JPS5530246A - Noise elimination system for picture information - Google Patents

Noise elimination system for picture information

Info

Publication number
JPS5530246A
JPS5530246A JP10355778A JP10355778A JPS5530246A JP S5530246 A JPS5530246 A JP S5530246A JP 10355778 A JP10355778 A JP 10355778A JP 10355778 A JP10355778 A JP 10355778A JP S5530246 A JPS5530246 A JP S5530246A
Authority
JP
Japan
Prior art keywords
fourier transform
picture
fibers
inverse
picture information
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
JP10355778A
Other languages
Japanese (ja)
Inventor
Seihachiro Yamashita
Yoshikazu Nishiwaki
Kozo Ono
Koichi Tsuno
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP10355778A priority Critical patent/JPS5530246A/en
Publication of JPS5530246A publication Critical patent/JPS5530246A/en
Pending legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE: To eliminate a periodic noise equivalent to a core pitch by providing a space frequency filter with a single circular opening of a diameter equal to a value obtained by multiplying the inverse number of the core pitch of a bundle of fibers by the focal distance of a Fourier-transform lens and the wavelength of coherent light.
CONSTITUTION: Picture information, transmitted through a bundle of optical fibers 3 at regular core pitches, is written to picture converting element 6, the contents of which are read out by light from coherent light source 14 for Fourier transform. Then, they are inputted to space frequency filter 9 with a circular opening of a diameter equal to a value obtain by multiplying the inverse number of core pitch (a)mm of fibers 3 by focal distance (f)mm of Fourier transform lens 8 and wavelength (λ)mm of light from light source 14, namely, (fλ/a)mm. After inverse Fourier transform by inverse Fourier transform lens 10, picture informarion with its periodic noise removed by filter 9 is projected on screen 11.
COPYRIGHT: (C)1980,JPO&Japio
JP10355778A 1978-08-25 1978-08-25 Noise elimination system for picture information Pending JPS5530246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10355778A JPS5530246A (en) 1978-08-25 1978-08-25 Noise elimination system for picture information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10355778A JPS5530246A (en) 1978-08-25 1978-08-25 Noise elimination system for picture information

Publications (1)

Publication Number Publication Date
JPS5530246A true JPS5530246A (en) 1980-03-04

Family

ID=14357112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10355778A Pending JPS5530246A (en) 1978-08-25 1978-08-25 Noise elimination system for picture information

Country Status (1)

Country Link
JP (1) JPS5530246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59819A (en) * 1982-06-25 1984-01-06 株式会社東芝 Contact material for vacuum breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59819A (en) * 1982-06-25 1984-01-06 株式会社東芝 Contact material for vacuum breaker
JPS6359214B2 (en) * 1982-06-25 1988-11-18

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