CA1026603A - Appareil de soustraction d'images - Google Patents

Appareil de soustraction d'images

Info

Publication number
CA1026603A
CA1026603A CA218,018A CA218018A CA1026603A CA 1026603 A CA1026603 A CA 1026603A CA 218018 A CA218018 A CA 218018A CA 1026603 A CA1026603 A CA 1026603A
Authority
CA
Canada
Prior art keywords
image subtraction
subtraction apparatus
image
subtraction
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.)
Expired
Application number
CA218,018A
Other languages
English (en)
Inventor
Paul G. Roetling
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of CA1026603A publication Critical patent/CA1026603A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/46—Systems using spatial filters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06E—OPTICAL COMPUTING DEVICES; COMPUTING DEVICES USING OTHER RADIATIONS WITH SIMILAR PROPERTIES
    • G06E3/00—Devices not provided for in group G06E1/00, e.g. for processing analogue or hybrid data
    • G06E3/001—Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Nonlinear Science (AREA)
CA218,018A 1974-01-21 1975-01-16 Appareil de soustraction d'images Expired CA1026603A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US434855A US3888591A (en) 1974-01-21 1974-01-21 Image subtraction apparatus

Publications (1)

Publication Number Publication Date
CA1026603A true CA1026603A (fr) 1978-02-21

Family

ID=23725961

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218,018A Expired CA1026603A (fr) 1974-01-21 1975-01-16 Appareil de soustraction d'images

Country Status (2)

Country Link
US (1) US3888591A (fr)
CA (1) CA1026603A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946433A (en) * 1974-11-25 1976-03-23 Xerox Corporation Phase image scanning method
US4511219A (en) * 1982-06-15 1985-04-16 The United States Of America As Represented By The Secretary Of The Air Force Kalman filter preprocessor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143581A (fr) * 1965-06-22
US3716359A (en) * 1970-12-28 1973-02-13 Xerox Corp Cyclic recording system by the use of an elastomer in an electric field

Also Published As

Publication number Publication date
US3888591A (en) 1975-06-10

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