matchHistograms

[imOut, hist] = matchHistograms(img1,img2,nbins)
Matches the histogram of image1 to that of image 2, using the user-specified number of bins. Returns the histogram-matched image, as well as its histogram. Operates on two grayscale, two binary, or two color images.

INPUTS:
img1: the image to modify
img2: the image whose histogram is to be matched
nbins: number of histogram bins

OUTPUTS:
imgOut: the histogram-matched image
hist: the histogram of the output image

USAGE: this function works on two grayscale, two binary, or two color images. For color images, the number of color planes must match (i.e., size(img1,3) must match size(img2,3).