CA2735803A1 - Selective and adaptive illumination of a target - Google Patents

Selective and adaptive illumination of a target Download PDF

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Publication number
CA2735803A1
CA2735803A1 CA2735803A CA2735803A CA2735803A1 CA 2735803 A1 CA2735803 A1 CA 2735803A1 CA 2735803 A CA2735803 A CA 2735803A CA 2735803 A CA2735803 A CA 2735803A CA 2735803 A1 CA2735803 A1 CA 2735803A1
Authority
CA
Canada
Prior art keywords
illumination
image
target
scene
illuminating
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
CA2735803A
Other languages
French (fr)
Other versions
CA2735803C (en
Inventor
Alain Bergeron
Hubert Jerominek
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.)
Institut National dOptique
Original Assignee
Institut National dOptique
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 Institut National dOptique filed Critical Institut National dOptique
Publication of CA2735803A1 publication Critical patent/CA2735803A1/en
Application granted granted Critical
Publication of CA2735803C publication Critical patent/CA2735803C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
    • G01S3/7864—T.V. type tracking systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/141—Control of illumination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Image Input (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

There are provided a method and a system for illuminating one or more target in a scene. An image of the scene is acquired using a sensing device that may use an infrared sensor for example. From the image, an illumination controller determines an illumination figure, such that the illumination figure adaptively matches at least a position of the target in the image. The target is the selectively illuminated using an illumination device, according to the illumination figure.

Claims (17)

1. A system for illuminating at least one target in a scene, the system comprising:

an input for receiving an image acquired on said scene, said image comprising said target;

an illumination device having an illumination field and adapted to illuminate a selected portion only of said illumination field according to an illumination figure for selectively illuminating said target in said illumination field;
and an illumination controller for determining said illumination figure from said image such that said portion adaptively matches at least a position of said target in said image, said illumination figure being determined according to a known registration between said image and said illumination field.
2. The system as claimed in claim 1, wherein said input is to receive said image updated in time and wherein said illumination figure is updated in time as a function of said image such that said illumination figure tracks said target as it moves in the scene.
3. The system as claimed in claim 1, further comprising a sensing device for acquiring said image.
4. The system as claimed in claim 3, wherein said sensing device is an infrared sensor.
5. The system as claimed in claim 3, wherein said sensing device operates in at least one of the x-ray spectrum, the ultra-violet spectrum, the near-infrared spectrum, the mid-infrared spectrum, the long-infrared spectrum and the terahertz spectrum.
6. The system as claimed in claim 1, further comprising: an image processor for processing said image to extract a shape and said position of said target in said image.
7. The system as claimed in claim 1, wherein said illumination device comprises an array of light sources, said light sources individually corresponding to points in said illumination figure.
8. The system as claimed in claim 3, wherein said sensing device comprises a sensor array defining an array of sensor pixels, said sensor pixels individually corresponding to points in said image;

and wherein said registration comprises a correspondence between points in said image and points in said illumination figure.
9. The system as claimed in claim 1, wherein said illumination device comprises a single light source and a spatial light modulator array coupled thereto to define an array of illumination zones individually corresponding to points in said illumination figure.
10. The system as claimed in claim 1, wherein said illumination device comprises at least one of a laser diode, a light emitting diode and a light bulb.
11. A system comprising a plurality of sub-systems as the system claimed in claim 1, wherein the sub-systems are positioned at different view points relative to the same one of said scene.
12. A method for illuminating at least one target in a scene, the method comprising:

acquiring an image of said scene, said image comprising said target;

determining, from said image, an illumination figure defined on an illumination field, such that said illumination figure adaptively matches at least a position of said target in said image, said illumination figure being determined according to a known registration between said image and said illumination field; and illuminating a selected portion only of said illumination field according to said illumination figure for selectively illuminating said target in said illumination field.
13 The method as claimed in claim 12, wherein said acquiring comprises updating said image in time and wherein said determining comprises updating said illumination figure in time such that said illumination figure tracks said target as it moves in the scene.
14. The method as claimed in claim 12, further comprising: processing said image to extract a shape and said position of said target in said image.
15. The method as claimed in claim 12, wherein said illuminating a portion comprises: activating part of an array of light sources so that said target is selectively illuminated in said illumination field, said light sources individually corresponding to points in said illumination figure.
16. The method as claimed in claim 12, wherein said acquiring an image comprises acquiring an infrared radiation of said scene.
17 The method as claimed in claim 12, wherein said illuminating a portion only of said illumination field comprises emitting a light in the visible spectrum.
CA2735803A 2008-10-10 2008-10-10 Selective and adaptive illumination of a target Active CA2735803C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2008/001820 WO2010040197A1 (en) 2008-10-10 2008-10-10 Selective and adaptive illumination of a target

Publications (2)

Publication Number Publication Date
CA2735803A1 true CA2735803A1 (en) 2010-04-15
CA2735803C CA2735803C (en) 2011-12-13

Family

ID=42100157

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2735803A Active CA2735803C (en) 2008-10-10 2008-10-10 Selective and adaptive illumination of a target

Country Status (3)

Country Link
EP (1) EP2332007A4 (en)
CA (1) CA2735803C (en)
WO (1) WO2010040197A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2969455B1 (en) * 2010-12-15 2013-01-18 Latecoere ACTIVE SCENE OBSERVATION DEVICE THROUGH A DIFFUSING MEDIUM, USE OF THE DEVICE AND OBSERVATION METHOD
EP2512121B1 (en) * 2011-04-13 2013-06-05 Axis AB Illumination device
WO2017129554A1 (en) * 2016-01-29 2017-08-03 Philips Lighting Holding B.V. Controlled lighting for three-dimensional trajectories

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6079862A (en) * 1996-02-22 2000-06-27 Matsushita Electric Works, Ltd. Automatic tracking lighting equipment, lighting controller and tracking apparatus
JP3997566B2 (en) * 1997-07-15 2007-10-24 ソニー株式会社 Drawing apparatus and drawing method
WO1999005857A1 (en) * 1997-07-21 1999-02-04 Bauer Will N Virtual positioning media control system
GB0004351D0 (en) * 2000-02-25 2000-04-12 Secr Defence Illumination and imaging devices and methods
US20020080999A1 (en) * 2000-11-03 2002-06-27 Ali Bani-Hashemi System and method for highlighting a scene under vision guidance
US20020180973A1 (en) * 2001-04-04 2002-12-05 Mackinnon Nicholas B. Apparatus and methods for measuring and controlling illumination for imaging objects, performances and the like
JP2003283964A (en) * 2002-03-26 2003-10-03 Olympus Optical Co Ltd Video display apparatus
EP1793599B1 (en) * 2004-09-21 2015-10-28 Nikon Corporation Electronic device
JP4115467B2 (en) * 2005-06-01 2008-07-09 富士フイルム株式会社 Imaging device
US7656413B2 (en) * 2006-03-29 2010-02-02 Autodesk, Inc. Large display attention focus system

Also Published As

Publication number Publication date
WO2010040197A1 (en) 2010-04-15
EP2332007A1 (en) 2011-06-15
EP2332007A4 (en) 2013-05-01
CA2735803C (en) 2011-12-13

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