Abstract

A holographic image projection system that uses a non-iterative method for encoding computer generated holograms (CGH) on a phase-only spatial light modulator (SLM) is proposed. In each video frame, the method perfectly reconstructs a 2-to-1 sub-sampled version of the image pixels (such as even indexed rows), while a correlated encoding noise is distributed over the remaining pixels. By altering the sub-sampling grid among even and odd rows and columns between frames, the encoding noise is smoothly distributed over the image area. Experimental results suggest that the slightly degraded image quality is acceptable for the benefits of system simplicity and low computational cost.

© 2015 Optical Society of America