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.