Design and implementation of an embedded system for reducing dazzle in the eyes from a digital projector by using image processing methods
Ying‐Wen Bai, Yucheng Liu, Cheng-Hung Tsai · 2011
When someone is standing in front of a presentation screen, the contrast between the projector light and the indoor illumination is, as a rule, too great. This causes frequent contraction of the pupils of a person's eyes and thereby great discomfort. In this paper we use both an embedded system and a Webcam to design a digital projector which by using image processing methods reduces dazzle in the eyes. We use this method to reduce the light intensity towards a person's face to the approximate level of the indoor illumination, thus reducing the frequency of pupil contraction. Our design proposes this method by using motion detection. Motion detection tracks the person's location and infers the head position. This method uses a black oval mask to cover the face so that the eyes can avoid any dazzling light.