(19)

(11)

EP 1 763 844 A2

(12)

(88) Date of publication A3: 23.03.2006 (43) Date of publication: 21.03.2007 Bulletin 2007/12 (21) Application number: 05763341.4 (22) Date of filing: 06.06.2005

(51) International Patent Classification (IPC):  G06T 7/00(2006.01) (86) International application number: PCT/US2005/019923 (87) International publication number: WO 2005/124709 (29.12.2005 Gazette 2005/52)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 09.06.2004 US 865155 16.02.2005 US 59512 26.05.2005 US 138033 26.05.2005 US 138023 26.05.2005 US 138025 (71) Applicant: Cognex Technology and Investment Corporation Mountain View, CA 94043 (US)	(72) Inventors: SILVER, William, M. Weston, MA 02193 (US) PHILLIPS, Brian, S. Sherborn, MA 01770 (US) (74) Representative: Rupprecht, Kay et al Meissner, Bolte & Partner GbR Widenmayerstrasse 48 80538 München 80538 München (DE)