Digital light fields are obtained by sampling of huge number of light rays, capturing the colour intensity of a whole visual scene from different view angles. The large amount of data that is necessary to represent a light field requires highly efficient compression methods to store and exchange such type of signals. This paper presents a light field coding scheme based on a low-complexity preprocessing approach that generates a pseudo-video sequence suitable for standard compression using HEVC. The efficiency of the proposed scheme is evaluated using a data set of twelve light field images and low-delay B HEVC coding configuration. The R-D performance obtained by the proposed scheme is consistently better than JPEG, revealing significantly higher gains, particularly for higher compression ratios.

High efficiency coding of light field images based on tiling and pseudo-temporal data arrangement

PERRA, CRISTIAN;
2016

Abstract

Digital light fields are obtained by sampling of huge number of light rays, capturing the colour intensity of a whole visual scene from different view angles. The large amount of data that is necessary to represent a light field requires highly efficient compression methods to store and exchange such type of signals. This paper presents a light field coding scheme based on a low-complexity preprocessing approach that generates a pseudo-video sequence suitable for standard compression using HEVC. The efficiency of the proposed scheme is evaluated using a data set of twelve light field images and low-delay B HEVC coding configuration. The R-D performance obtained by the proposed scheme is consistently better than JPEG, revealing significantly higher gains, particularly for higher compression ratios.
978-150901552-8
Light field coding; HEVC; Tiling; Pseudo-video sequence; Reordering
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11584/173180
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