Edge detection algorithms The following algorithms have been implemented:
  1. Robert's edge detector
  2. Prewitt edge detector
  3. Sobel edge detector
  4. Frie Chen edge detector
  5. Canny edge detector

Robert's Edge detector

edge -roberts -t 10 50 cman.jpg


Prewitt Edge detector

edge -prewitts -t 10 50 cman.jpg


Sobel Edge detector

edge -sobel -t 10 50 cman.jpg


Frie Chen Edge detector

edge -frie -t 10 50 cman.jpg


Canny detector

edge -canny -t 10 50 cman.jpg


CODE

Here is the link for the documented ( Doxygen ) this is the code for edge detection schemes (1-4) and here is for canny edge detection scheme.