Using depth image processing and human skeleton identification methods to reduce uncomfortable light from a digital projector

When a speaker stands in front of a projector screen for a presentation, the eyes will be hurt by the direct light from the digital projector. This paper proposes a design to reduce the strong light by projecting a black round mask on the speaker´s head. The black round mask is superimposed to the slide frame by the software of this design and the mask traces the speaker´s head. The depth camera captures the depth images from the speaker with the projector screen. The location of the speaker´s head is determined by using the middleware components to process the depth images. This design efficiently continues to trace the head location. The computer uses this head location and superimposes a black round mask to reduce the uncomfortable feeling caused by the strong light of the projector.