CA2140681A1 - Wide area coverage infrared search system - Google Patents

Wide area coverage infrared search system

Info

Publication number
CA2140681A1
CA2140681A1 CA 2140681 CA2140681A CA2140681A1 CA 2140681 A1 CA2140681 A1 CA 2140681A1 CA 2140681 CA2140681 CA 2140681 CA 2140681 A CA2140681 A CA 2140681A CA 2140681 A1 CA2140681 A1 CA 2140681A1
Authority
CA
Canada
Prior art keywords
image
nfov
wfov
displayed
observer
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
CA 2140681
Other languages
French (fr)
Other versions
CA2140681C (en
Inventor
Paul C. Chevrette
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.)
Minister of National Defence of Canada
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2140681A1 publication Critical patent/CA2140681A1/en
Application granted granted Critical
Publication of CA2140681C publication Critical patent/CA2140681C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Closed-Circuit Television Systems (AREA)
  • Studio Devices (AREA)

Abstract

An imaging system wherein two field-of-views (FOVs) images of a scene are obtained and displayed as a single image so that both FOVs can be viewed simultaneously by an observer.
This imagining system is particularly directed to infrared (IR) imaging of a scene which is useful for search-and-rescue (SAR) operations. One IR image sensor provides a low resolution, high sensitivity, wide field-of-view (WFOV) image of the scene which is displayed as a large, low resolution, WFOV image on a display apparatus. A second IR sensor provides a high resolution narrow field-of-view (NFOV) image of a selected portion of the scene wherein the second sensor's NFOV optics can be directed to any particular area within the WFOV. That smaller NFOV image is also displayed, by the display apparatus, within the WFOV
displayed image and it is displayed at the same area in the WFOV
image as that actually covered by the NFOV, the NFOV image displacing the WFOV image of that area with the two images being fused together into a single image by the display apparatus.
This is rather similar in operation to an observer's eye which has a high resolution central NFOV vision and a very large FOV
peripheral vision that has low resolution but a high sensitivity to detection of any anomaly. By using an eye movement tracking system to aim the NFOV image detector and the position that the NFOV image is displayed, an observer's central vision can always be directed to the high resolution NFOV image with that observer's peripheral vision simultaneously viewing the WFOV low resolution image.
CA002140681A 1994-06-17 1995-01-20 Wide area coverage infrared search system Expired - Fee Related CA2140681C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26206194A 1994-06-17 1994-06-17
US08/262,061 1994-06-17

Publications (2)

Publication Number Publication Date
CA2140681A1 true CA2140681A1 (en) 1995-12-18
CA2140681C CA2140681C (en) 2003-09-23

Family

ID=22996000

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002140681A Expired - Fee Related CA2140681C (en) 1994-06-17 1995-01-20 Wide area coverage infrared search system

Country Status (1)

Country Link
CA (1) CA2140681C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099969A2 (en) * 1999-11-12 2001-05-16 Be Here Corporation Multiple resolution image capture arrangement
US8373127B2 (en) 2008-06-26 2013-02-12 Lynntech, Inc. Method of searching for a thermal target
USRE44087E1 (en) 1996-06-24 2013-03-19 B.H. Image Co. Llc Presenting panoramic images with geometric transformation
CN112578904A (en) * 2020-11-17 2021-03-30 北京津发科技股份有限公司 Man-machine interaction testing device for mobile terminal
FR3107977A1 (en) * 2020-03-03 2021-09-10 Thales ASSISTANCE PROCESS FOR THE DETECTION OF ASSOCIATED ELEMENTS, DEVICE AND PLATFORM

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE44087E1 (en) 1996-06-24 2013-03-19 B.H. Image Co. Llc Presenting panoramic images with geometric transformation
EP1099969A2 (en) * 1999-11-12 2001-05-16 Be Here Corporation Multiple resolution image capture arrangement
EP1099969A3 (en) * 1999-11-12 2003-09-10 Be Here Corporation Multiple resolution image capture arrangement
US8373127B2 (en) 2008-06-26 2013-02-12 Lynntech, Inc. Method of searching for a thermal target
EP2294811B1 (en) * 2008-06-26 2015-09-30 Lynntech, Inc. Method of searching for a thermal target
FR3107977A1 (en) * 2020-03-03 2021-09-10 Thales ASSISTANCE PROCESS FOR THE DETECTION OF ASSOCIATED ELEMENTS, DEVICE AND PLATFORM
WO2021175930A1 (en) * 2020-03-03 2021-09-10 Thales Method for assisting in the detection of elements, and associated device and platform
US11989945B2 (en) 2020-03-03 2024-05-21 Thales Method for assisting with the detection of elements, associated device and platform
CN112578904A (en) * 2020-11-17 2021-03-30 北京津发科技股份有限公司 Man-machine interaction testing device for mobile terminal

Also Published As

Publication number Publication date
CA2140681C (en) 2003-09-23

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130121

MKLA Lapsed

Effective date: 20130121