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1. (WO2003005006) METHOD FOR DIGITIZING A SURFACE TRAVELLING AT A FAST SPEED
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2003/005006 International Application No.: PCT/FR2002/002358
Publication Date: 16.01.2003 International Filing Date: 05.07.2002
IPC:
G01N 21/88 (2006.01) ,G01N 21/89 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
88
Investigating the presence of flaws, defects or contamination
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
88
Investigating the presence of flaws, defects or contamination
89
in moving material, e.g. paper, textiles
Applicants: BAYLE, Philippe[FR/FR]; FR (UsOnly)
GRANCHER, Philippe[FR/FR]; FR (UsOnly)
I2S[FR/FR]; 19, rue Jean Perrin - B.P. 214 F-33608 Pessac, FR (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NE, NL, NO, NZ, OM, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZM, ZW)
Inventors: BAYLE, Philippe; FR
GRANCHER, Philippe; FR
Agent: DRONNE, Guy ; Cabinet Beau de Lomenie 18, cours de Verdun F-33000 Bordeaux, FR
Priority Data:
01/0896405.07.2001FR
Title (EN) METHOD FOR DIGITIZING A SURFACE TRAVELLING AT A FAST SPEED
(FR) PROCEDE DE NUMERISATION D'UNE SURFACE DEFILANT A HAUTE VITESSE
Abstract:
(EN) The invention relates to a method for digitizing the surface of a material (16) travelling at a variable v high speed in front of a linear camera (10) comprising a row of sensors (22). Said method comprises the following steps: integration of the light emitted by said material (16) for travelling lengths of said material (16) which are equal to a during a determined integration time t1 when the speed at which said material (16) travels is lower than or equal to the product of the length a of the pixels (24) and the opposite of said determined integration time t1; integration of the light emitted by said material (16) for travel lengths of said material (16) equal to k.a during a variable integration time tx equal to the product of k.a. and the opposite of the speed v; proportional increase of the gain of the linear camera (10) to the travel speed v.
(FR) L'invention concerne un procédé de numérisation de la surface d'un matériau (16) défilant à une vitesse variable v au regard d'une caméra (10) linéaire comportant une rangée de capteurs (22). Il comprend les étapes suivantes : on intègre la lumière émise par ledit matériau (16), pour des longueurs de défilement dudit matériau (16) égales à a, durant un temps d'intégration déterminé t1, lorsque la vitesse de défilement v dudit matériau (16) est inférieur ou égale au produit de la longueur a des pixels (24) et de l'inverse dudit temps d'intégration déterminé t1; et, on intègre la lumière émise par ledit matériau (16), pour des longueurs de défilement dudit matériau (16) égales à k.a, durant un temps d'intégration variable, tx égal au produit de k.a et de l'inverse de la vitesse v, et on augmente le gain de ladite caméra (10) linéaire proportionnellement à la vitesse de défilement v.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)