Object measurements can be broadly classified as (1) geometric measures,
(2) ones based on the histogram of the object image, and (3) those based on the
intensity of the object. Geometric measures, including those that quantify object
structure, can be computed for both binary and grayscale objects. In contrast,
histogram- and intensity-based measures are applicable to grayscale objects.
Another category of measures, which are distance based, can be used for
computing the distance between objects or between two or more components
of objects. In the rest of this chapter we discuss some common measurements for
both binary and gray-level objects.
10.2 Measures for Binary Objects
A binary object can be described in terms of its size, shape, or distance