Extended depth-of-field

This function generates an extended depth-of-field image (also referred to as all-in-focus image) from a focus sequence using the noise-robust selective all-in-focus algorithm [1]. Input images may be grayscale or color. For color images, the algorithm is applied to each color plane independently. For a demo, just type 'fstackdemo' at the matlab prompt.
References:
[1] Pertuz et. al. "Generation of all-in-focus images by noise-robust selective fusion of limited depth-of-field
images" IEEE Trans. Image Process, 22(3):1242 - 1251, 2013.