Foveated computer-generated hologram and its progressive update using triangular mesh scene model for near-eye displays

초록

We propose a computer-generated hologram technique that reduces latency caused by hologram calculations in holographic near-to-eye displays. The proposed method applies a foveated rendering technique to a triangular mesh-based computer-generated hologram to reduce the computational load while maintaining the perceived image quality. Progressive update from low resolution to high resolution is achieved with minimal computational load by overlaying a new high-resolution occluding mesh patch on a low-resolution mesh model of the scene. The reduced latency for the first hologram generation with low reconstruction resolution and its smooth update to the high-resolution reconstructions using the proposed method was verified by numerical simulations and optical experiments. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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