Research projects



Light field images a.k.a. Plenoptic images sample the intensity of light in a scene together with the direction of the light rays in space. This project aims at exploring standard and non-standard image coding algorithm performance when coding light field images, and to design quality metric for light field content.

[1] Cristian Perra, “Assessing the quality of experience in viewing rendered decompressed light field,” Multimedia Tools and Applications, 2018,  ISSN: 13807501, DOI: 10.1007/s11042-018-5615-3

[2] Cristian Perra, D.D. Giusto, “Light Field Compression on Sliced Lenslet Array,” International Journal of Internet Technology and Secured Transactions, 2017, ISSN: 1748-5703

[3] Cristian Perra, “Lossless plenoptic image compression using adaptive block differential prediction,” in Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on ,  19-24 April 2015 (BIBTEX) (XPLORE)

[4] Alexandre Vieira, Helder Duarte, Cristian Perra, Luis Tavora, Pedro Assuncao, “Data Formats for High Efficiency Coding of Lytro-Illum Light Fields,” in Image Processing Theory, Tools and Applications (IPTA), 2015 IEEE International Conference on, 10-13 November 2015 (BIBTEX)   (XPLORE)

[5]  Cristian Perra, Pedro Assuncao, “High efficiency coding of light field images based
on tiling and pseudo-temporal data arrangement,” in IEEE International Conference on Multimedia and Expo (ICME), Seattle, USA (2016) (IEEE-ICME2016-draft).

[6]  Cristian Perra, D.D. Giusto, “Raw Light Field Image Compression of Sliced Lenslet Array”, IEEE International Symposium on Broadband Multimedia Systems and Broadcasting , Cagliari, Italy, 2017.

[7] Cristian Perra, D. Giusto, “JPEG 2000 Compression of Unfocused Light Field Images Based on Lenslet Array Slicing”, IEEE International Conference on Consumer Electronics (ICCE), Las Vegas, USA, 2017.

[8] Cristian Perra, F. Murgia, D. Giusto, “An analysis of 3D point cloud reconstruction from light field images,” IEEE International Conference on Image Processing Theory, Tools and Applications (IPTA), Oulu, Finland, 2016.

See publications for abstracts.


2014 – Block distortion estimation for multimedia applications

An algorithm for block distortion estimation



3D-CONTOURNET – 3d content creation, coding and transmission over future media networks

Supported by ICT COST Action IC1105



DATAPLANNING SOFTWARE: Planning, dimensioning, and reporting: a SaaS approach to business management.

Supported by Regional Operative Programme (POR) of Sardinia Region (Italy),  FESR 2007-2013 Asse VI Competitività – Linea di attività 6.2.2.i e 6.2.3.a


ELLEIEC: Enhancing Lifelong Learning in Electrical and Information Engineering

Supported by EACEA. ERASMUS NETWORK Nr. 142814-LLP-1-2008-1-FR-ERASMUS-ENW.


Additional information:


keywords – light field image compression; plenoptic image compression; light field image coding; light field image transmission; plenoptic image coding; light field compression; light field coding;  light field transmission; lenslet array coding; lenslet array compression; sub-aperture compression; sub-aperture coding.

credits | accessibilità Università degli Studi di Cagliari
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