Accepts any source of visual signals including photographs, live or recorded video, and digital video files. From 15 to 35 degrees, there will be a small loss in matching ability. Beyond 35 degrees, more significant loss of matching may occur.
Optimal performance is achieved in diffuse ambient lighting.
In addition, performance is best if the subject is not back-lit, but this can be compensated for with gain control on video camera As a rule of thumb, if you can see the face in the image, then the system will detect it. Finds faces in any background, plain or cluttered. Functions with equal performance on color or gray scale images. Recognition performance is not significantly affected by low resolution facial images. Enhanced performance is achieved on higher end hardware.