AU2001244915A1 - Identification of a virtual raster pattern - Google Patents

Identification of a virtual raster pattern

Info

Publication number
AU2001244915A1
AU2001244915A1 AU2001244915A AU4491501A AU2001244915A1 AU 2001244915 A1 AU2001244915 A1 AU 2001244915A1 AU 2001244915 A AU2001244915 A AU 2001244915A AU 4491501 A AU4491501 A AU 4491501A AU 2001244915 A1 AU2001244915 A1 AU 2001244915A1
Authority
AU
Australia
Prior art keywords
raster pattern
identification
virtual raster
virtual
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.)
Abandoned
Application number
AU2001244915A
Inventor
Tomas Edso
Petter Ericson
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.)
Anoto AB
Original Assignee
Anoto AB
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 claimed from SE0001235A external-priority patent/SE516310C2/en
Priority claimed from SE0004132A external-priority patent/SE518866C2/en
Application filed by Anoto AB filed Critical Anoto AB
Publication of AU2001244915A1 publication Critical patent/AU2001244915A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • 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
    • G06F3/0317—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
    • G06F3/0321—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/42—Global feature extraction by analysis of the whole pattern, e.g. using frequency domain transformations or autocorrelation
    • G06V10/431—Frequency domain transformation; Autocorrelation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting
    • 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
    • G06V10/19—Image acquisition by sensing codes defining pattern positions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/24—Aligning, centring, orientation detection or correction of the image
    • G06V10/247—Aligning, centring, orientation detection or correction of the image by affine transforms, e.g. correction due to perspective effects; Quadrilaterals, e.g. trapezoids

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Image Analysis (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Image Processing (AREA)
  • Image Generation (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Holo Graphy (AREA)
  • Pinball Game Machines (AREA)
  • Image Input (AREA)
  • Complex Calculations (AREA)

Abstract

A method aims to identify a virtual raster pattern in an image of a surface that is provided with a plurality of position-coding marks. Each mark is associated with a respective intersection of raster lines belonging to the raster pattern. By means of the method, the virtual raster pattern is identified via Fourier analysis of the image. A computer program product and a device for position determination are also described.
AU2001244915A 2000-04-05 2001-03-21 Identification of a virtual raster pattern Abandoned AU2001244915A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE0001235A SE516310C2 (en) 2000-04-05 2000-04-05 Product with two coding patterns, including raster points; and method, computer program and device for reading the coding patterns
SE0001235 2000-04-05
SE0004132 2000-11-10
SE0004132A SE518866C2 (en) 2000-11-10 2000-11-10 Virtual raster pattern identification method for images associated with raster lines, involves converting image into unit pulse sets and calculating spatial frequency spectrum based on two dimensional Fourier transform
PCT/SE2001/000604 WO2001075783A1 (en) 2000-04-05 2001-03-21 Identification of a virtual raster pattern

Publications (1)

Publication Number Publication Date
AU2001244915A1 true AU2001244915A1 (en) 2001-10-15

Family

ID=26655061

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001244915A Abandoned AU2001244915A1 (en) 2000-04-05 2001-03-21 Identification of a virtual raster pattern

Country Status (6)

Country Link
EP (1) EP1272972B1 (en)
JP (1) JP4783535B2 (en)
AT (1) ATE472778T1 (en)
AU (1) AU2001244915A1 (en)
DE (1) DE60142468D1 (en)
WO (1) WO2001075783A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE519277C2 (en) 2001-06-25 2003-02-11 Anoto Ab Device and method for position coding and for decoding a position code
US6667695B2 (en) 2001-06-25 2003-12-23 Anoto Ab Position code
US6966495B2 (en) 2001-06-26 2005-11-22 Anoto Ab Devices method and computer program for position determination
US6732927B2 (en) 2001-06-26 2004-05-11 Anoto Ab Method and device for data decoding
US7145556B2 (en) 2001-10-29 2006-12-05 Anoto Ab Method and device for decoding a position-coding pattern
SE520682C2 (en) 2001-12-06 2003-08-12 Anoto Ab Reconstruction of a virtual screen
SE0203853D0 (en) 2002-12-23 2002-12-23 Anoto Ab Data code
EP1620828B1 (en) 2003-04-29 2014-12-24 Anoto AB Methods, apparatus, computer program and storage medium for position decoding
US6962450B2 (en) * 2003-09-10 2005-11-08 Hewlett-Packard Development Company L.P. Methods and apparatus for generating images
GB0321174D0 (en) * 2003-09-10 2003-10-08 Hewlett Packard Development Co Products with position identification pattern
SE0303370D0 (en) * 2003-12-16 2003-12-16 Anoto Ab Method, apparatus, computer program and storage medium for recording a movement of a user unit
SE0401647D0 (en) 2004-06-28 2004-06-28 Anoto Ab Coding and decoding of data
KR101236809B1 (en) 2005-06-17 2013-02-25 아노토 아베 Method and system for combining a position and information code
US10620754B2 (en) 2010-11-22 2020-04-14 3M Innovative Properties Company Touch-sensitive device with electrodes having location pattern included therein
CN103827793A (en) 2012-07-31 2014-05-28 松下电器产业株式会社 Mark reading device and mark reading method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5091966A (en) * 1990-07-31 1992-02-25 Xerox Corporation Adaptive scaling for decoding spatially periodic self-clocking glyph shape codes
US5852434A (en) 1992-04-03 1998-12-22 Sekendur; Oral F. Absolute optical position determination
JPH06129835A (en) * 1992-10-15 1994-05-13 Sumitomo Metal Ind Ltd Picture image analyzing device
US5566245A (en) * 1993-03-09 1996-10-15 United Parcel Service Of America, Inc. The performance of a printer or an imaging system using transform-based quality measures
US5661506A (en) 1994-11-10 1997-08-26 Sia Technology Corporation Pen and paper information recording system using an imaging pen
US5786583A (en) * 1996-02-16 1998-07-28 Intermec Corporation Method and apparatus for locating and decoding machine-readable symbols

Also Published As

Publication number Publication date
WO2001075783A1 (en) 2001-10-11
JP4783535B2 (en) 2011-09-28
EP1272972B1 (en) 2010-06-30
ATE472778T1 (en) 2010-07-15
JP2003529853A (en) 2003-10-07
DE60142468D1 (en) 2010-08-12
EP1272972A1 (en) 2003-01-08

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