AAMToolbox viewing one population in shape space

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What is Shape Space?

Mean shape

The pink diamond shows the position of the mean cartoon shape plotted in shape space. Each spot represents one of the input point models (images). Each point model represents 38 points i.e. 38*2=76 values in the normal two dimensional viewing space OR a single point in 72 dimensional space. However, we cannot visualise 78 dimensional space so we have used PCA to choose a view point (a rotation of the space) such that we can see the two principle components. We have then set all the other components to zero and focus on the important parameters.

Shape Space: the principle component is plotted on the x-axis (abscissa) and the component that accounts for the second largest amount of variation is plotted on the y-axis (ordinate). Pink diamond shows the position of the mean shape. The other points

Exploring the data in shape space

Each pink circle marker represents a data sample. Right clicking on a marker opens a context menu. Here we have selected to view the associated original image and its point model (shown to the left). Showing the PC values causes them to be echoed to the command window. Ds

Shape Space: the principle component is plotted on the x-axis (abscissa) and the component that accounts for the second largest amount of variation is plotted on the y-axis (ordinate). Pink diamond shows the position of the mean shape. The other points