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Electronic holography is facing two major problems-the huge amount of computation and the poor quality of reconstructed images. We propose a method that reduces the computation time needed to generate holographic fringe patterns by using techniques such as parallel computation with and within many processing elements, vectorized computation in parallel with scalar computation, and computation simultaneous with data transfer to the output device. The result obtained with the proposed method applied to a parallel computer, CYBERFLOW, is 85.4 times as fast as that obtained with a conventional computer and yields a maximum of four frame updates per second. This demonstrates the feasibility of a real-time computer generated holographic display system. We also propose the second problem be solved by synthesis of an electronic hologram and an optical hologram. Experimental results in this paper show that using an edge-illuminated optical hologram for this synthesis provides clear images of both an electronic hologram and an optical hologram to realized a dynamic and precise imaging display.

Special Issue Image Technology of Next Generation. Real-Time Parallel-Computed Holography Synthesized with an Optical Hologram for Rich Images.