The Module for Determining an Object’s True Gray Levels

This chapter discusses the module for determining an object's true gray levels. To compute the true gray levels of an object of interest requires the removal of the overlapping background effects. This problem is quite complex and takes several steps to be resolved. First in Section 5.1, it will be shown that an n-object-overlapping problem can always be simplified to a two-object-overlapping problem. So the research focus turns to computing true gray levels for two-object-overlapping problem. Since there is no existing method for accomplishing this task in either the transmission or the scatter image modalities, it was necessary to develop models that can be used to remove the background object overlapping effects. Section 5.2 discusses the development of the