Contrary to traditional eye tracking which bases upon active infrared illumination, Eyezag works with image processing algorithms to calculate gaze positions from webcam data. We spent multiple years of research at the Karlsruher Institute of Technology (KIT) to deliver superior results.
First, to derive gaze positions from images, a face is detected. Then the eyes are precisely extracted and compared with a database of eye images as well as the personal calibration to finally estimate the best-fitting gaze position.