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Design of fiducials for accurate registration using machine vision

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2 Author(s)
Bose, C.B. ; AT&T Bell Lab., Murray Hill, NJ, USA ; Amir, I.

The effect of the shape and size of a standard feature (fiducial) on the positional accuracy of the centroid in machine-vision applications is studied. It is shown that a circular fiducial provides superior subpixel registration accuracy among the fiducial shapes typically used today

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:12 ,  Issue: 12 )