Telephone receiver.

(phn1)

The original image.

(phn1thr1)

Result of thresholding phn1 at a value of 100.

(phn1ske1)

Result of skeletonizing phn1thr1.

(phn1clo1)

Result of closing phn1thr1 with a circular structuring element of size 20.

(phn1ske2)

Result of skeletonizing phn1clo1.

(phn1dst1)

Result of scaling phn1thr1 by a factor of 6 and then distance transforming the brightened image.

©2003 R. Fisher, S. Perkins, A. Walker and E. Wolfart.