OpenCV: How can I make the PCA class only account for local transformation? -


introduction

i reading "mastering opencv practical computer vision projects" have finished ch6, non-rigid face tracking. in chapter, have obtained eigenvectors of local transformation of face removing global transformation , putting final product through svd class. fine , worked well. yet, in ch7, book uses pca class , hence, planned use well.

question

the problem is, found or @ least think found, pca class accounts both global transformation , local transformation if send in shape data of faces in training set(provided muct database). there way account local transformation without going through hassle of deducting center of mass, procrusting, , projecting out global transformation? basically, there neat trick account when using pca class?

note

if point unclear, please ask me clarify in comments. try clarify best of ability. thank you.


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