Computational Holography

Part of ILLIXR, the Illinios Extended Reality Benchmark Suite. This component is responsible for calculating image holograms (per-pixel phase masks) using the Weighted Gerchberg–Saxton (GSW) algorithm.

Files

generateHologram.cu

generateHologram

Host side kernel launch code.

propagateToSpotPositions

CUDA kernel that propagates phases from the SLM plane to the depth plane using Fresnel summation.

propagateToSpotSum

CUDA kernel that sums up the per-thread block results from the propagateToSpotPositions() kernel.

propagateToSLM

CUDA kernel that calculates the error function at the depth planes and updates the SLM phases.

goldenHologram.cu

The original hologram implementation. This implementation did not support arbitrary SLM sizes and colored holograms.

Installation & Usage

Under C/source/

make all
make jetson

make all compiles for the SM75 architecture, while make jetson compiles for SM70. To run this code on a older NVIDIA GPU, please change the SM architecture accordingly.

To run our modified hologram code:

./hologram

To run the original hologram code:

./goldenHologram

License

This code is available under the LGPL license.