Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Reexamination Certificate
2005-11-15
2005-11-15
Porta, David (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
C250S559390, C382S141000
Reexamination Certificate
active
06965120
ABSTRACT:
A method and an apparatus for object recognition, in particular defect detection on workpieces, such as shot cores (1) or core packets, wherein the object is illuminated by a light source (4) and recorded and detected by means of a camera (3), and wherein the data obtained from the recording are processed or, if need be, stored by means of a computer. The object is illuminated by a least two light sources (4) from different directions or angles, and the camera (3) records the object and the shadows resulting from the illumination.
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Beyerer Jürgen
Seiraffi Mohammed Ali
Alston & Bird LLP
Hottinger Maschinenbau GmbH
Porta David
Yam Stephen
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