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1. US5911003 - Color pattern evaluation system for randomly oriented articles

Office États-Unis d'Amérique
Numéro de la demande 08638554
Date de la demande 26.04.1996
Numéro de publication 5911003
Date de publication 08.06.1999
Numéro de délivrance 5911003
Date de délivrance 08.06.1999
Type de publication A
CIB
G06K 9/00
GPHYSIQUE
06CALCUL; COMPTAGE
KRECONNAISSANCE DES DONNÉES; PRÉSENTATION DES DONNÉES; SUPPORTS D'ENREGISTREMENT; MANIPULATION DES SUPPORTS D'ENREGISTREMENT
9Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
G06T 1/00
GPHYSIQUE
06CALCUL; COMPTAGE
TTRAITEMENT OU GÉNÉRATION DE DONNÉES D'IMAGE, EN GÉNÉRAL
1Traitement de données d'image, d'application générale
G06T 7/00
GPHYSIQUE
06CALCUL; COMPTAGE
TTRAITEMENT OU GÉNÉRATION DE DONNÉES D'IMAGE, EN GÉNÉRAL
7Analyse d'image
CPC
G06T 7/0006
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
0002Inspection of images, e.g. flaw detection
0004Industrial image inspection
0006using a design-rule based approach
G06T 2207/10024
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
10Image acquisition modality
10024Color image
G06T 2207/30164
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
30Subject of image; Context of image processing
30108Industrial image inspection
30164Workpiece; Machine component
Déposants Pressco Technology Inc.
Inventeurs Sones Richard A.
Mandataires Fay, Sharpe, Beall, Fagan, Minnich & McKee
Titre
(EN) Color pattern evaluation system for randomly oriented articles
Abrégé
(EN)

An imaging device coupled to a processor generates a number of image signals corresponding to a multicolor pattern of an item in motion. Each of a number of regions of the pattern is correlated to one of a number of reference colors to generate a segmented image of the pattern. The processor models the multicolor pattern by deriving a number of test values from the segmented image representation. Each test value is representative of a corresponding one of the regions and is determined as a function of region size independent of orientation of the multicolor pattern. The test values are compared to reference data to detect a variation of the item. The reference colors may be determined from color pairs with each pair having a first member from a first set of sample colors and a second member from a second set of sample colors. The first member is closer to the second member than any other color of the second set in the color space, and the second member is closer to the first member than any other color of the first set in the color space. An image of the item randomly oriented with respect to a model image is characterized by generating a number of characteristic values within the processor with respect to rotational position about an item image point. A rotationally correlated item image is generated as a function of the characteristic values for evaluation.

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