An integrated design of a smartphone interface with multiple image processing methods to reduce shining light from a digital projector

In this paper we propose a smartphone to be used in open system platforms that combines with a projector to produce a black mask which when used together cover and track the speaker´s face to reduce the strong light from the projector shining toward the speaker´s eyes. This design uses the background subtraction to first eliminate the background of the captured image and then detect the skin color. In order to track the location of the speaker, this design also utilizes the face detection function to track the coordinates of the speaker´s face. This design also uses the projection screen blocks to automatically calibrate the mask position based on the resulting distance calculation from the projector to the projection screen.