Global Patent Index - EP 1057390 A2

EP 1057390 A2 2000-12-06 - AUTOMATIC INSPECTION SYSTEM WITH STEREOVISION

Title (en)

AUTOMATIC INSPECTION SYSTEM WITH STEREOVISION

Title (de)

GERÄT ZUR AUTOMATISCHEN UBERPRÜFUNG MIT STEREOSCOPISCHEM SICHTSYSTEM

Title (fr)

SYSTEME AUTOMATIQUE D'INSPECTION STEREOSCOPIQUE

Publication

EP 1057390 A2 (EN)

Application

EP 99969986 A

Priority

  • GB 9828109 A
  • US 9930206 W

Abstract (en)

[origin: WO0038494A2] In one embodiment of the present invention, two banks (22, 24) of fixed array cameras provide tiled stereo images (I1, I2, I3) and electronics assemble the tiled stereo images into a mosaic image. The mosaic image includes height information derived from the two sets stereo images, and is also compensated as a function of reference points in the image to more closely conform to the actual board (10). Preferably, a SAM model is used to locate the reference points. Reconstructed SAM models corresponding to components on the board are applied within a search area where a certain type of component is expected to be found. The best-fit location of the component within the search area, as well as the skew angle and the probability are computed. The best-fit location is the location where the Manhabolis distance and the residual error are optimized. Once the best-fit location is computed, it is compared to tolerances to identify improperly placed components, the absence of components or the like.

IPC 1-7 (main, further and additional classification)

H05K 13/08

IPC 8 full level (invention and additional information)

G01B 11/00 (2006.01); G01N 21/956 (2006.01); G06T 1/00 (2006.01); G06T 7/00 (2006.01); G06T 7/60 (2006.01); H04N 13/00 (2006.01); H05K 13/08 (2006.01)

CPC (invention and additional information)

H04N 13/0239 (2013.01); G06T 7/001 (2013.01); H05K 13/08 (2013.01); G06T 2207/10012 (2013.01); G06T 2207/20076 (2013.01); G06T 2207/30141 (2013.01); H04N 13/0246 (2013.01); H04N 2013/0081 (2013.01)

Citation (search report)

See references of WO 0038494A3

Designated contracting state (EPC)

DE GB NL

EPO simple patent family

WO 0038494 A2 20000629; WO 0038494 A3 20000914; WO 0038494 A8 20001026; AU 3342500 A 20000712; CA 2321096 A1 20000629; EP 1057390 A2 20001206; GB 9828109 D0 19990217; IL 137778 D0 20011031; JP 2003522347 A 20030722

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE GB NL

2004-05-12 [18W] WITHDRAWN

- Effective date: 20040319

2001-01-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001106

2000-12-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE