CA2050242A1 - Methode de transformation de coordonnees polaires logarithmiques, methode de vision et appareil de traitement d'informations - Google Patents

Methode de transformation de coordonnees polaires logarithmiques, methode de vision et appareil de traitement d'informations

Info

Publication number
CA2050242A1
CA2050242A1 CA2050242A CA2050242A CA2050242A1 CA 2050242 A1 CA2050242 A1 CA 2050242A1 CA 2050242 A CA2050242 A CA 2050242A CA 2050242 A CA2050242 A CA 2050242A CA 2050242 A1 CA2050242 A1 CA 2050242A1
Authority
CA
Canada
Prior art keywords
information
polar coordinate
logarithmic polar
processing apparatus
information processing
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
CA2050242A
Other languages
English (en)
Other versions
CA2050242C (fr
Inventor
Masami Itoh
Kanji Nishii
Hiroyuki Kawamura
Atsushi Fukui
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.)
Panasonic Holdings Corp
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 CA2050242A1 publication Critical patent/CA2050242A1/fr
Application granted granted Critical
Publication of CA2050242C publication Critical patent/CA2050242C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • 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
    • G06E3/005—Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements using electro-optical or opto-electronic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/88—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/88—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters
    • G06V10/89—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters using frequency domain filters, e.g. Fourier masks implemented on spatial light modulators
    • G06V10/893—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters using frequency domain filters, e.g. Fourier masks implemented on spatial light modulators characterised by the kind of filter
    • G06V10/895—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters using frequency domain filters, e.g. Fourier masks implemented on spatial light modulators characterised by the kind of filter the filter being related to phase processing, e.g. phase-only filters

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Image Analysis (AREA)
  • Holo Graphy (AREA)
  • Length Measuring Devices By Optical Means (AREA)
CA002050242A 1990-08-31 1991-08-29 Methode de transformation de coordonnees polaires logarithmiques, methode de vision et appareil de traitement d'informations Expired - Fee Related CA2050242C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2231708A JP2767996B2 (ja) 1990-08-31 1990-08-31 対数極座標変換方法および視覚認識方法および光学的情報処理装置
JP2-231708 1990-08-31

Publications (2)

Publication Number Publication Date
CA2050242A1 true CA2050242A1 (fr) 1992-03-01
CA2050242C CA2050242C (fr) 1999-04-06

Family

ID=16927767

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002050242A Expired - Fee Related CA2050242C (fr) 1990-08-31 1991-08-29 Methode de transformation de coordonnees polaires logarithmiques, methode de vision et appareil de traitement d'informations

Country Status (5)

Country Link
EP (2) EP0884668A1 (fr)
JP (1) JP2767996B2 (fr)
KR (1) KR950004508B1 (fr)
CA (1) CA2050242C (fr)
DE (1) DE69130846T2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699295B1 (fr) * 1992-12-15 1995-01-06 Thomson Csf Dispositif de traitement optique de signaux électriques.
US7702570B2 (en) 2007-03-15 2010-04-20 Bgc Partners, Inc. System and method for providing an operator interface for a radar display of market data

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5624310A (en) * 1979-08-02 1981-03-07 Ricoh Co Ltd Hologram for hologram scanner and its production
JPS5965823A (ja) * 1982-10-08 1984-04-14 Ricoh Co Ltd ホログラムスキヤナ

Also Published As

Publication number Publication date
DE69130846T2 (de) 1999-10-07
JPH04110928A (ja) 1992-04-13
EP0473121A3 (en) 1993-05-12
KR950004508B1 (ko) 1995-05-01
CA2050242C (fr) 1999-04-06
JP2767996B2 (ja) 1998-06-25
EP0473121B1 (fr) 1999-02-03
KR920004880A (ko) 1992-03-28
EP0473121A2 (fr) 1992-03-04
EP0884668A1 (fr) 1998-12-16
DE69130846D1 (de) 1999-03-18

Similar Documents

Publication Publication Date Title
GB1331986A (en) Preprocessing method and apparatus for pattern recognition
Triesch et al. A system for person-independent hand posture recognition against complex backgrounds
WO1996042040A3 (fr) Systeme et methode de detection de visages ou analogues sur la base d'un reseau neuronal
CA2063785A1 (fr) Appareil de traitement d'images
CA2033359A1 (fr) Methode de couplage de motifs et appareil connexe
EP0806866A3 (fr) Dispositif d'évaluation et méthode utilisable dans un appareil de détection de vecteurs de mouvement
GB1533293A (en) Method and apparatus for detecting characteristic features of surfaces
DE69626208D1 (de) Verfahren und System zur Erkennung von Handgesten
CA2128411A1 (fr) Appareil et methode d'identification biometrique
US3727183A (en) A pattern recognition device including means for compensating for registration errors
KR920008618A (ko) 신경 회로망을 이용하는 패턴 인식 시스템
EP0783226A3 (fr) Appareil et procédé de traitement d'image
CA2050242A1 (fr) Methode de transformation de coordonnees polaires logarithmiques, methode de vision et appareil de traitement d'informations
US5553169A (en) Position detecting device using run position and run length of normalized projection data
JPH0749942A (ja) 追跡装置
EP0434871B1 (fr) Méthode de reconnaissance de caractères
CA2056294A1 (fr) Reconnaissance rapide d'une chaine de mots relies conformement a une grammaire reguliere
JPH06231257A (ja) 学習データ生成装置
Solina et al. Recovery of mail piece shape from range images using 3-D deformable models
Fislage et al. Using visual attention to recognize human pointing gestures in assembly tasks
CA2000023A1 (fr) Segmenteur spatial rapide pour caracteres ecrits a la main
JPS6464079A (en) Image recognizing device
JPH09223229A (ja) パターンマッチング方法
KR960028727A (ko) 표면실장장치의 기계-카메라 좌표계의 자동 정합방법
JPH0259509B2 (fr)

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed