GB2546724A8 - Image processing systems and methods - Google Patents

Image processing systems and methods Download PDF

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Publication number
GB2546724A8
GB2546724A8 GB1521896.9A GB201521896A GB2546724A8 GB 2546724 A8 GB2546724 A8 GB 2546724A8 GB 201521896 A GB201521896 A GB 201521896A GB 2546724 A8 GB2546724 A8 GB 2546724A8
Authority
GB
United Kingdom
Prior art keywords
whiteboard
plane
camera
polariser
image
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
GB1521896.9A
Other versions
GB2546724B8 (en
GB2546724B (en
GB2546724A (en
GB201521896D0 (en
Inventor
James Cable Adrian
John Mccaughan Gareth
Christopher Smith Euan
Thornton Shane
Benet Ballester Raul
Katz Eyal
Maoz Barak
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.)
Light Blue Optics Ltd
Original Assignee
Light Blue Optics 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
Priority to GB1521896.9A priority Critical patent/GB2546724B8/en
Application filed by Light Blue Optics Ltd filed Critical Light Blue Optics Ltd
Publication of GB201521896D0 publication Critical patent/GB201521896D0/en
Priority to PCT/GB2016/050341 priority patent/WO2016128761A1/en
Priority to EP16706234.8A priority patent/EP3257021B1/en
Priority to US15/550,732 priority patent/US10540755B2/en
Priority to EP19185858.8A priority patent/EP3576052B8/en
Publication of GB2546724A publication Critical patent/GB2546724A/en
Priority to US15/831,070 priority patent/US10839494B2/en
Priority to US16/709,099 priority patent/US11494882B2/en
Application granted granted Critical
Publication of GB2546724B publication Critical patent/GB2546724B/en
Publication of GB2546724A8 publication Critical patent/GB2546724A8/en
Publication of GB2546724B8 publication Critical patent/GB2546724B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/0304—Detection arrangements using opto-electronic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G06Q10/101—Collaborative creation, e.g. joint development of products or services
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/254—Analysis of motion involving subtraction of images
    • 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
    • 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
    • G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20021—Dividing image into blocks, subimages or windows
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30196—Human being; Person

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Business, Economics & Management (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Human Resources & Organizations (AREA)
  • Artificial Intelligence (AREA)
  • Signal Processing (AREA)
  • Strategic Management (AREA)
  • Data Mining & Analysis (AREA)
  • Marketing (AREA)
  • Operations Research (AREA)
  • Quality & Reliability (AREA)
  • Tourism & Hospitality (AREA)
  • General Business, Economics & Management (AREA)
  • Economics (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Image Processing (AREA)
  • Facsimiles In General (AREA)
  • User Interface Of Digital Computer (AREA)
  • Accessories Of Cameras (AREA)

Abstract

A whiteboard image capture system has a camera configured to capture an image of the whiteboard viewed from an acute angle; and a linear polariser having a plane substantially perpendicular to a plane of the whiteboard and having an axis of polarisation substantially perpendicular to the plane of the whiteboard or within 30° of the perpendicular to the plane of the whiteboard. The camera is configured to capture the image of the whiteboard through the polariser; and a normal to the polariser is directed in a different direction to a direction defined by an optic axis of the camera. The camera may have a rectilinear lens. The system may filter data from the image frames to remove parts of the image frames corresponding to parts of a user or user pen writing or drawing on the whiteboard. The polariser may be curved about an axis perpendicular to the plane of the whiteboard (figure 6b).
GB1521896.9A 2015-02-13 2015-12-11 Image processing systems and methods Active GB2546724B8 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB1521896.9A GB2546724B8 (en) 2015-12-11 2015-12-11 Image processing systems and methods
PCT/GB2016/050341 WO2016128761A1 (en) 2015-02-13 2016-02-12 Image processing systems and methods
EP16706234.8A EP3257021B1 (en) 2015-02-13 2016-02-12 Image processing systems and methods
US15/550,732 US10540755B2 (en) 2015-02-13 2016-02-12 Image processing systems and methods
EP19185858.8A EP3576052B8 (en) 2015-02-13 2016-02-12 Image processing systems and methods
US15/831,070 US10839494B2 (en) 2015-02-13 2017-12-04 Timeline image capture systems and methods
US16/709,099 US11494882B2 (en) 2015-02-13 2019-12-10 Image processing systems and methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1521896.9A GB2546724B8 (en) 2015-12-11 2015-12-11 Image processing systems and methods

Publications (5)

Publication Number Publication Date
GB201521896D0 GB201521896D0 (en) 2016-01-27
GB2546724A GB2546724A (en) 2017-08-02
GB2546724B GB2546724B (en) 2020-03-11
GB2546724A8 true GB2546724A8 (en) 2020-07-29
GB2546724B8 GB2546724B8 (en) 2020-07-29

Family

ID=55274602

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1521896.9A Active GB2546724B8 (en) 2015-02-13 2015-12-11 Image processing systems and methods

Country Status (1)

Country Link
GB (1) GB2546724B8 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11880983B2 (en) * 2021-04-14 2024-01-23 Logitech Europe S.A. Image enhancement system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101923417B (en) * 2009-06-10 2013-06-05 鸿富锦精密工业（深圳）有限公司 Touch type input device
JPWO2016080114A1 (en) * 2014-11-17 2017-09-28 コニカミノルタ株式会社 Projection device
WO2016128761A1 (en) * 2015-02-13 2016-08-18 Light Blue Optics Ltd Image processing systems and methods

Also Published As

Publication number Publication date
GB2546724B8 (en) 2020-07-29
GB2546724B (en) 2020-03-11
GB2546724A (en) 2017-08-02
GB201521896D0 (en) 2016-01-27

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