1. A computer-implemented method for stain separation of a pathology image using stain vector analysis comprising: converting an original image into an optical domain image; performing stain vector analysis on the optical domain image to obtain one or more stain vectors; deconvoluting the one or more stain vectors to produce one or more separated stain images; isolating stain amounts in each color channel of the one or more separated stain images; comparing, for each pixel in the original image, a pixel value from one of the one or more stain images to a pixel value in another image of the one or more stain images; and selecting, for each pixel in the original image, a pixel value with a largest stain value, wherein a plurality of selected pixel values forms a strongest stain image.