“The problems of image segmentation and grouping remain great challenges for computer vision. Since the time of the Gestalt movement in psychology, it has been known that perceptual grouping plays a powerful role in human visual perception.”
Pedro Felzenszwalb

Input:

Simple Image Segmentation with OpenGM

Output:

$ ./imageSegSimple coins.pgm out.pgm 20.0 30 90

Image Segmentation (with EM Learning) in OpenGM

Output:

$ ./imageSegWithEMLearning coins.pgm out.pgm 3 0.1

Output:

$ ./imageSegWithEMLearning coins.pgm out.pgm 2 0.1