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1. WO2007146255 - SYSTEM AND METHOD OF TESTING IMAGING EQUIPMENT USING TRANSFORMED PATTERNS

Publication Number WO/2007/146255
Publication Date 21.12.2007
International Application No. PCT/US2007/013730
International Filing Date 12.06.2007
IPC
G06K 9/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/46 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
46Extraction of features or characteristics of the image
G06K 9/66 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
64using simultaneous comparisons or correlations of the image signals with a plurality of references, e.g. resistor matrix
66references adjustable by an adaptive method, e.g. learning
G06K 9/62 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
G06K 9/64 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
64using simultaneous comparisons or correlations of the image signals with a plurality of references, e.g. resistor matrix
G06K 9/68 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
68using sequential comparisons of the image signals with a plurality of reference, e.g. addressable memory
CPC
G06T 7/0004
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
0002Inspection of images, e.g. flaw detection
0004Industrial image inspection
H04N 17/002
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
17Diagnosis, testing or measuring for television systems or their details
002for television cameras
Applicants
  • SOZOTEK, INC [US]/[US] (AllExceptUS)
Inventors
  • EDGAR, Albert
  • BOPARDIKAR, Ajit
Agents
  • ANDERSON, Margaret
Priority Data
11/452,70113.06.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD OF TESTING IMAGING EQUIPMENT USING TRANSFORMED PATTERNS
(FR) système et procédé d'essai d'un équipement d'imagerie utilisant des dessins transformés
Abstract
(EN)
Systems and methods for creating an image target and performing for diagnostic testing and for of an image capture device include choosing a pattern appropriate for image testing (210); embedding the pattern into a reversible domain (220); adding a random phase component in the reversible domain (230); transforming the pattern from the reversible domain to an inverse of the reversible domain (240); and producing an image target for testing the image capture device from the transformed pattern (250). A method for testing an image capture device includes receiving image data representative of a photographic image of a target image captured by the image capture device; transforming the image data into a reversible domain to detect one or more patterns embedded in the reversible domain of the target image; and comparing the reversible domain image data with the one or more geometric patterns embedded in the reversible domain.
(FR)
L'invention concerne des systèmes et des procédés pour créer une cible d'image et réaliser un essai de diagnostic d'un dispositif de capture d'image comprenant le choix d'un dessin approprié pour l'essai d'image; l'intégration du dessin dans un domaine réversible; l'ajout d'un composant de phase aléatoire dans le domaine réversible; la transformation du dessin provenant du domaine réversible en un inverse du domaine réversible; et la production d'une cible d'image pour tester le dispositif de capture d'image à partir du dessin transformé. Un procédé pour tester un dispositif de capture d'image comprend la réception de données d'image représentatives d'une image photographique d'une image cible capturée par le dispositif de capture d'image; la transformation des données d'images dans un domaine réversible pour détecter un ou plusieurs dessins intégrés dans le domaine réversible de l'image cible; et la comparaison des données d'image de domaine réversible avec ledit ou lesdits dessins géométriques intégrés dans le domaine réversible.
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