Browsing by Author "Dawson, Donald W."
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Prediction of firing pin shape and 3-D matching of shells and firing pins based on firing pin impressions in primers
Dawson, Donald W.; Hart, Chris L.; Gilbert, Bernard R.; Andrade, Rafael A.; Blatt, Joel H. (1997-02-10)A variable resolution video machine vision system has been built which will determine the 3-D shape of a firing pin from the dent it has made in the primer of a shell. The system can also compare primer dents in different ... -
Real time 3-D video moiré inspection system with enhanced depth resolution
Dawson, Donald W.; Hart, Chris L.; Gilbert, Bernard R.; Wallace, Gary L.; Blatt, Joel H. (1997-01-20)A variable resolution video machine vision systems has been built which generates twice the number of depth contours for a given grating spacing as a conventional moiré system. This variable resolution system uses a ... -
Real-time optically processed face-recognition system based on arbitrary moire contours
Andrade, Rafael A.; Gilbert, Bernard R.; Dawson, Donald W.; Hart, Chris L.; Kozaitis, S.P.; Blatt, Joel H. (1996-07-12)A real-time diffraction based optical processed 3-D shape recognition system has been built and demonstrated. The system uses an Ar-ion laser interferometer to project variable spatial frequency structural illumination on ...