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SCALABLE LIGHT FIELD COMPRESSION SCHEME USING SPARSE RECONSTRUCTION AND RESTORATION

Citation Author(s):
Fatma Hawary, Christine Guillemot, Dominique Thoreau, Guillaume Boisson
Submitted by:
FATMA HAWARY
Last updated:
18 September 2017 - 10:15pm
Document Type:
Poster
Document Year:
2017
Event:
Presenters:
Fatma Hawary
Paper Code:
3122
Categories:
 

This poster describes a light field scalable compression scheme based on the sparsity of the angular Fourier transform of the light field. A subset of sub-aperture images (or views) is compressed using HEVC as a base layer and transmitted to the decoder. An entire light field is reconstructed from this view subset using a method exploiting the sparsity of the light field in the continuous Fourier domain. The reconstructed light field is enhanced using a patch-based restoration method. Then, restored samples are used to predict original ones, in a SHVC-based SNR-scalable scheme. Experiments with different datasets show a significant bit rate reduction of up to 24% in favor of the proposed compression method compared with a direct encoding of all the views with HEVC. The impact of the compression on the quality of the all-infocus images is also analyzed showing the advantage of the proposed scheme.

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