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Frei and Chen Filter

Category: Image Filters
Description: Uses the Frei and Chen algorithm to compute the edge and line finding images. It also displays the difference between the original and a smoothed image to locate edges.
Comments: See 'The Image Processing Handbook' by John Russ for an excellent overview of image processing techniques and applications.
Script version: 2.1
DM/GMS version: 3.6.5
Script written as a function: No
Source: Show code
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