Reference mark, method for recognizing reference marks and...

Details Reference mark, method for recognizing reference marks and... Reference mark, method for recognizing reference marks and...

2005-07-12

2005-07-12

Chang, Jon (Department: 2623)

Image analysis

Image transformation or preprocessing

Measuring image properties

C382S165000, C382S205000

Reexamination Certificate

active

06917720

ABSTRACT:
The invention relates to a reference mark, a method for recognizing reference marks and a method for object measuring. According to the invention, the object is fitted with coded reference marks. Said marks are automatically recognized and decoded by the inventive method for reference mark recognition, whereupon a three-dimensional representation of the object is realized. According to the invention, the method compensates automatically for geometrical and radiometric interferences and generates at least one quality measurement to evaluate the quality of recognition and decoding. The invention particularly enables fast recognition and decoding of large numbers of reference marks and fast measuring of objects.

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Ahn, S.J. (1997) “Kreisformige Zielmarke”; 4. ABW-Workshop, TA Esslingen, Jan. 22-23, 1997.
Goding, R. (1997) “Neue Aufnahme- und Auswertetechniken in der RolleiMetric Close Range Workstation (CDW)”, Firmenprospekt der Firma Rollei Fototechnik, 1997.

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