Samples images from MATRA-NORTEL database

They have been recorded under variable lighting conditions. The faces appear in different sizes and at different positions. The subjects' facial expressions are not neutral.
Source of degradation: Lighting Source of degradation: face size Source of degradation: face position Source of degradation: facial expressions

Images before normalization

Compensation of lighting conditions Compensation of varying face size Compensation of varying face position By-product compensation of facial expressions

Images after normalization