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This part of the the chapter is concerned with searching and fitting, also referred to as active model training. It explains how to use appearance model, though it can be discarded if no such functionality is necessary. Training will be dealt with first and fitting which is a closely-related subject will be explained in the next long section.
A descriptive statistical model is now available for utility and various analyses. That model is a type of flexible deformable [] entity that can describe any instance of object or image2.23 in the range of the training set2.24. Assuming that the training set was infinite in size or comprised all possible instances that the model might be presented with, it should then be considered a powerful, fully compatible, flawless model.