JPS56137341A - Method for detecting out-of-focus image - Google Patents

Method for detecting out-of-focus image

Info

Publication number
JPS56137341A
JPS56137341A JP3984180A JP3984180A JPS56137341A JP S56137341 A JPS56137341 A JP S56137341A JP 3984180 A JP3984180 A JP 3984180A JP 3984180 A JP3984180 A JP 3984180A JP S56137341 A JPS56137341 A JP S56137341A
Authority
JP
Japan
Prior art keywords
calculated
focus
slit
larger
multipliers
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
JP3984180A
Other languages
Japanese (ja)
Other versions
JPS5927894B2 (en
Inventor
Takashi Fukui
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP3984180A priority Critical patent/JPS5927894B2/en
Priority to DE19813111968 priority patent/DE3111968A1/en
Priority to CH210781A priority patent/CH651141A5/en
Publication of JPS56137341A publication Critical patent/JPS56137341A/en
Publication of JPS5927894B2 publication Critical patent/JPS5927894B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/0008—Means for carrying the chain saw, e.g. handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To simplify a detector by scanning an image plane by using photometric systems of different measuring areas thereon and deciding out-of-focus from the frequency distribution of the differences in two kinds of the obtained transmittances or transmission densities.
CONSTITUTION: The transmitted light of a photographic film 5 moving in the arrow direction is split by a half-mirror 6 and the split rays enter photoelectric multipliers 10, 13 via slits 9, 12 of different aperture widths. The aperture of the slit 12 is larger than the slit 9, and the photometric area on the film plane is larger as well. The difference in the outputs of the multipliers 10, 13 is calculated by a differential amplifier 14, and the cumulative frequency of every area is calculated by integrating circuits 16, 17 via a frequency distribution calculating circuit 15. The ratio thereof is calculated by a comparating circuit 18 and depending upon whether this value exceeds a threshold value or not, wherether the image is sharp or out-of-focus is discriminated.
COPYRIGHT: (C)1981,JPO&Japio
JP3984180A 1980-03-28 1980-03-28 Out of focus image detection method Expired JPS5927894B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3984180A JPS5927894B2 (en) 1980-03-28 1980-03-28 Out of focus image detection method
DE19813111968 DE3111968A1 (en) 1980-03-28 1981-03-26 Method for detecting a blurred photographic original
CH210781A CH651141A5 (en) 1980-03-28 1981-03-27 METHOD FOR DETECTING THE BLURRIES OF A PHOTOGRAPHIC IMAGE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3984180A JPS5927894B2 (en) 1980-03-28 1980-03-28 Out of focus image detection method

Publications (2)

Publication Number Publication Date
JPS56137341A true JPS56137341A (en) 1981-10-27
JPS5927894B2 JPS5927894B2 (en) 1984-07-09

Family

ID=12564182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3984180A Expired JPS5927894B2 (en) 1980-03-28 1980-03-28 Out of focus image detection method

Country Status (3)

Country Link
JP (1) JPS5927894B2 (en)
CH (1) CH651141A5 (en)
DE (1) DE3111968A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987447A (en) * 1982-11-11 1984-05-21 Fuji Photo Film Co Ltd Photographic printing method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710132A (en) * 1980-06-20 1982-01-19 Fuji Photo Film Co Ltd Detecting method for out-of-focus picture
JPS60207131A (en) * 1984-03-30 1985-10-18 Fuji Photo Film Co Ltd Detecting method of negative frame not to be printed
DE3519236C2 (en) * 1984-06-01 1995-11-02 Fuji Photo Film Co Ltd Automatic notching device for the preparation of moving photographic document strips

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2244340C2 (en) * 1972-09-09 1986-02-06 Agfa-Gevaert Ag, 5090 Leverkusen Method and device for the preliminary examination of master copies
DE2654943C2 (en) * 1976-12-03 1985-10-24 Agfa-Gevaert Ag, 5090 Leverkusen Method and device for the preliminary examination of master copies combined to form a master tape

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987447A (en) * 1982-11-11 1984-05-21 Fuji Photo Film Co Ltd Photographic printing method
JPH0437977B2 (en) * 1982-11-11 1992-06-23 Fuji Photo Film Co Ltd

Also Published As

Publication number Publication date
DE3111968A1 (en) 1982-01-07
DE3111968C2 (en) 1991-07-11
JPS5927894B2 (en) 1984-07-09
CH651141A5 (en) 1985-08-30

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