Alignment Issue Update

Last week, we present some statistics showing how well fiducial points were matching between samples of the same subjects for the same facial expressions (4 samples only, using a simplified L.O.O). However, after being informed that our fiducial points may not be aligned we were advised to look into this more.

Update:
It turns out the fiducial points are not aligned. Here is a image showing 4 examples of the same subject, same expression, without alignment and with alignment of 8 fiducial points that correspond to raw point clouds (using 3d affine transforms, mapping FP #1, FP #3, FP #4 -> FP #2):

Black: FP #2
Red: FP #1
Green: FP #3
Blue: FP #4
(8 Fiducial Points, Female subject: #1, Expression (Angry): #1, Binghamton Database)




Below is an image of the 2 sets of 83 control points corresponding a point cloud face that was preprocessed before and after they were affine transformed (but of the same subject, same expression, same number of samples):

Red: FP #2
Blue: FP #1
Purple: FP #3
Teal: FP #4




We also re-computed statistics on all the "aligned" points for a 10 females and 10 males where each male/female has 4 samples of 7 expressions, however, we did not have enough time to conjure up presentable data.