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Data

In the remainder of the article and in all subsequent sections, results of experiments are presented which not only use FRGC data but also the T3FRD database. An example range image from FRGC is presented in Figure or Figure where it is shown in 3-D.

Figure: Example range image from the FRGC dataset

Figure: A 3-D representation of an example image from the FRGC dataset

Although we have used 4 types of datasets, including synthetic data at one point, the experiments that follow use just the standard sets. We begin by experimenting with PCA on faces whose 3-D difference image looks like in figures and .

Figure: Difference images of the first 5 pairs taken from the same people

Figure: Difference images of the first 12 pairs taken from different people

For the sake of the experiments being consistent with past work, in most of the experiments we carve out only a subset of all faces, as shown in Figure , leaving only more rigid parts of the face.

Figure: A slice or subset of the data being used for ICP (on the left) and the masked face from which it is extracted (right)