Title :
Subpixel registration using a concentric ring fiducial
Author :
Gorman, Lawrence O. ; Bruckstein, Alfred M. ; Bose, Chinmoy B. ; Amir, Israel
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
Abstract :
An examination of the effects of spatial sampling and image noise on the precision with which the centroids of different geometric shapes can be determined is presented. The concentric ring fiducial-a bull´s-eye pattern-is identified as having desirable qualities of high location precision and rotational invariance. The performance of the concentric fiducial, as a function of diameter, number of rings. and ring spacing, has been tested, and these results are shown
Keywords :
computerised pattern recognition; computerised picture processing; noise; concentric ring fiducial; image noise; subpixel registration; Circuits; Image resolution; Image sampling; Machine vision; Manufacturing; Robotic assembly; Sampling methods; Shape; Testing; Working environment noise;
Conference_Titel :
Pattern Recognition, 1990. Proceedings., 10th International Conference on
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-8186-2062-5
DOI :
10.1109/ICPR.1990.119365
