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Journal Publication

Global motion compensation for compressing holographic videos

This publication appears in: Optics Express

Authors: D. Blinder, C. Schretter and P. Schelkens

Volume: 26

Issue: 20

Pages: 25524-25533

Publication Date: Sep. 2018


Abstract:

Large high-resolution digital holographic displays may become feasible in the near future, and they will need considerable amounts of data. Handling this bandwidth is particularly challenging for dynamic content operating at video rates. Conventional motion compensation algorithms from classical video coders are ineffective on holograms because, in contrast to natural imagery, each pixel contains partial information from the whole scene. We propose an accurate motion compensation model predicting how hologram content changes with respect to 3D rigid-body motion that arises in natural scenes. Using diffraction theory, we derive tractable closed form expressions for transforming 2D complex-valued holographic video frames. Our experiments use computer generated hologram videos with known ground truth motion. We integrated the proposed motion compensation model into the HEVC codec. We report Bjøntegaard delta-PSNR ratio gains of 8 dB over standard HEVC.

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Dr. David Blinder

+32 (0)02 629 169

dblinder@etrovub.be

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Dr. Colas Schretter

+32 (0)02 629 167

cschrett@etrovub.be

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Prof. Dr. Ir. Peter Schelkens

+32 (0)02 629 168

pschelke@etrovub.be

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