1. A method comprising: specifying a first class of a class network, wherein the first class is associated with a first anatomical object; specifying a second class of the class network, wherein the second class is associated with a second anatomical object, and wherein the second class is specified according to a relation between objects in the second class and objects in the first class; specifying a process hierarchy, wherein the process hierarchy includes a first process step and a second process step; performing the first process step to detect the first anatomical object using the first class, wherein the first process step is implemented on a computer of an image detection system; performing the second process step to detect the second anatomical object using the second class, wherein the second process step detects the second anatomical object using the detection of the first anatomical object; and measuring the second anatomical object, wherein the measuring the second anatomical object measures a shape of the sub-object, and wherein the shape is measured using a bounding box having x, y, and z dimensions; performing the third process step to detect a sub-object within the second anatomical object; and measuring the sub-object.