The preceding screenshot was obtained by changing only three parameters for
shape and three for the texture, which is the goal of AAMs. A sample application
has been developed and is available at http://www.packtpub.com/ for the reader
to try out AAM. Instantiating a new model is just a question of sliding the equation
parameters, as defined in the section Getting the feel of PCA. You should note that
AAM search and fitting rely on this flexibility to find the best match for a given
captured frame of our model in a different position from the trained ones. We will
see this in the next section.