Does it work in dark conditions or bright sunlight?
• Yes. The main issue is frame-rate. Webcams often throttle to low frame-rates in dark conditions. Tracking at 15Hz works, but not nearly as well as 20 or 30Hz. • If the image is completely black or saturated white, then obviously there is nothing the camera can “see” to track, however, for example, half the face can be covered and it still tracks fairly well.