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Exact global motion compensation for holographic video compression This publication appears in: Applied Optics Authors: R. Kizhakkumkara, D. Blinder, A. Symeonidou, T. Birnbaum, O. Watanabe, C. Schretter and P. Schelkens Volume: 58 Issue: 34 Pages: G204-G217 Publication Date: Nov. 2019
Abstract: Holographic video requires impractical bitrates for storage and transmission without data compression. We introduce an end-to-end compression pipeline for compressing holographic sequences with known ground truth motion. The compression strategy employs a motion compensation algorithm based on the rotational transformation of an angular spectrum. Residuals arising from the compensation step are represented using short-time Fourier transforms and quantized with uniform mid-rise quantizers whose bit depth is determined by a Lagrangian rate-distortion optimization criterion where the distortion metric is the mean squared error. Experiments use computer-generated holographic videos, and we report Bjøntegaard delta peak signal-to-noise ratio gains of around 20 dB when compared to traditional image/video codecs.
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