Active Lightings

The performance of face recognition systems is generally quite sensitive to lighting conditions, particularly when there is significant variation in illumination between enrolment and verification images. The effects of uncontrolled environment lighting on the human face manifest themselves as shadows and luminance gradients across the face.

Often a single strong light source is used to create an even light. However, this has several unintended side-effects: it can create significant glare on forehead or glasses, it causes washout of images due to the contrast between the background and the face, it can be uncomfortable for the user, and it assumes the user is positioned exactly in front of the light (otherwise it will cause shadows).

The Active-lights component of BioAssure aims to address all these problems by looking at the captured image and assessing the lighting conditions on the face. The ActiveLight Details lighting is then dynamically altered to ensure that the face has no shadows and is evenly illuminated.

Biometix

Active Lightings