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Orientation accuracy of edge detection operators acting on binary and saturated grey-scale images

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2 Author(s)
E. R. Davies ; London Univ., UK ; D. Celano

The orientation accuracy of a general class of edge detection operator acting on binary and saturated grey-scale images is studied. An operator similar to the Sobel operator is found to have the best available accuracy, of about +or-9.6 degrees , which is remarkably close to the figure of +or-1.2 degrees for grey-scale images. In addition, performance necessarily degrades gracefully in the presence of noise.

Published in:

Electronics Letters  (Volume:29 ,  Issue: 7 )