EP 1057390 A2 20001206 - 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
Application
Priority
- GB 9828109 A 19981219
- US 9930206 W 19991217
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
IPC 8 full level
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); H04N 13/239 (2018.01); H05K 13/08 (2006.01)
CPC (source: EP KR US)
G06T 7/001 (2013.01 - EP KR US); H04N 13/239 (2018.04 - EP KR US); H05K 13/0815 (2018.07 - EP KR); G06T 2207/10012 (2013.01 - EP KR); G06T 2207/20076 (2013.01 - EP KR); G06T 2207/30141 (2013.01 - EP KR); H04N 13/246 (2018.04 - EP KR); H04N 2013/0081 (2013.01 - EP KR)
Citation (search report)
See references of WO 0038494A2
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
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 A0 20011031; JP 2003522347 A 20030722; KR 20010040998 A 20010515
DOCDB simple family (application)
US 9930206 W 19991217; AU 3342500 A 19991217; CA 2321096 A 19991217; EP 99969986 A 19991217; GB 9828109 A 19981219; IL 13777899 A 19991217; JP 2000590448 A 19991217; KR 20007009019 A 20000817