pixel are the red, green, and blue intensity values. We assume that each pixel
belongs to one of three classes: the interior of a normal cell, the interior of an
abnormal cell, or the background.
Each pixel can be considered to represent a point in three-dimensional color
space. Thus each of the different-colored objects in the image will correspond
to a ‘‘cloud’’ of points in color space, and segmentation becomes the task of
isolating these clusters. More specifically, we wish to define a set of decision
surfaces that carve up the space into three disjoint regions, one for each class.
11.4.1 Bayes Classifier
One straightforward and quite powerful approach is the use of the Bayes
maximum-likelihood classifier. It generates second-order surfaces that partition ...