I feel like the ability for this method to work well depends on the methodology of taking the enrollment and the subsequent key-generation images. If you take them using the same poses, with the same camera and lighting within a few hours of each other then this method will work extremely well [1]. I really doubt it generalizes to the case of using it with a laptop webcam in any location with different lighting.
But maybe I am wrong, maybe there are enough bits of information in a randomly lit image of a face.
Comments
I feel like the ability for this method to work well depends on the methodology of taking the enrollment and the subsequent key-generation images. If you take them using the same poses, with the same camera and lighting within a few hours of each other then this method will work extremely well [1]. I really doubt it generalizes to the case of using it with a laptop webcam in any location with different lighting.
But maybe I am wrong, maybe there are enough bits of information in a randomly lit image of a face.
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2898524/