Most recent publications

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2019

A comprehensive study of the rate-distortion performance in MPEG point cloud compression

E. Alexiou; I. Viola; T. M. Borges; T. A. Fonseca; R. L. de Queiroz et al. 

2019-11-12. DOI : 10.1017/ATSIP.2019.20.

Assessment of quality of JPEG XL proposals based on subjective methodologies and objective metrics

P. Akyazi; T. Ebrahimi 

2019-09-06. SPIE Optical Engineering + Applications, San Diego, California, US, 11 – 15 August 2019. p. 23. DOI : 10.1117/12.2530196.

A new end-to-end image compression system based on convolutional neural networks

P. Akyazi; T. Ebrahimi 

2019-09-06. SPIE Optical Engineering + Applications, San Diego, California, US, 11 – 15 August 2019. p. 22. DOI : 10.1117/12.2530195.

An in-depth analysis of single-image subjective quality assessment of light field contents

I. Viola; T. Ebrahimi 

2019-06-05. 2019 Eleventh International Conference on Quality of Multimedia Experience (QoMEX), Berlin, Germany, June 5-7, 2019.

JPEG Pleno: Providing representation interoperability for holographic applications and devices

P. Schelkens; T. Ebrahimi; A. Gilles; P. Gioia; K-J. Oh et al. 

Etri Journal. 2019-02-01. Vol. 41, num. 1, p. 93-108. DOI : 10.4218/etrij.2018-0509.

An improved objective metric to predict image quality using deep neural networks

P. Akyazi; T. Ebrahimi 

2019. IS&T International Symposium on Electronic Imaging 2019 Human Vision and Electronic Imaging 2019, Burlingame, California, US, 13 – 17 January 2019 . p. 214-1-214-6.

Learning-Based Image Compression using Convolutional Autoencoder and Wavelet Decomposition

P. Akyazi; T. Ebrahimi 

2019. IEEE Conference on Computer Vision and Pattern Recognition Workshops, Los Angeles, CA, USA,

An in-depth analysis of single-image subjective quality assessment of light field contents

I. Viola; T. Ebrahimi 

2019-01-01. 11th International Conference on Quality of Multimedia Experience (QoMEX), Berlin, GERMANY, Jun 05-07, 2019.

Light field compression using translation-assisted view estimation

B. Hériard-Dubreuil; I. Viola; T. Ebrahimi 

2019. Picture Coding Symposium (PCS 2019), Ningbo, China, November 12-15, 2019.

Rendering-dependent compression and quality evaluation for light field contents

I. Viola; K. Takahashi; T. Fujii; T. Ebrahimi 

2019. Applications of Digital Image Processing XLII, SPIE Optics + Photonics, Optical Engineering + Applications, San Diego, California, USA, 11 – 15 August 2019. DOI : 10.1117/12.2530198.

Towards Modelling of Visual Saliency in Point Clouds for Immersive Applications

E. Alexiou; P. Xu; T. Ebrahimi 

2019. IEEE International Conference on Image Processing (ICIP), Taipei, Taiwan, September 22-25, 2019. DOI : 10.1109/ICIP.2019.8803479.

Saliency Driven Perceptual Quality Metric for Omnidirectional Visual Content

E. Upenik; T. Ebrahimi 

2019. IEEE International Conference on Image Processing (ICIP), Taipei, Taiwan, September 22-25, 2019. DOI : 10.1109/ICIP.2019.8803637.

Exploiting user interactivity in quality assessment of point cloud imaging

E. Alexiou; T. Ebrahimi 

2019. Eleventh International Conference on Quality of Multimedia Experience (QoMEX), Berlin, Germany, June 5-7, 2019. DOI : 10.1109/QoMEX.2019.8743277.

Point cloud quality evaluation: Towards a definition for test conditions

L. Cruz; E. Dumic; E. Alexiou; J. Prazeres; R. Duarte et al. 

2019. Eleventh International Conference on Quality of Multimedia Experience (QoMEX), Berlin, Germany, June 5-7, 2019. DOI : 10.1109/QoMEX.2019.8743258.

Inpainting in Omnidirectional Images for Privacy Protection

E. Upenik; P. Akyazi; M. Tuzmen; T. Ebrahimi 

2019. ICASSP 2019 – 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton, UK, May 12-17, 2019. p. 2487-2491. DOI : 10.1109/ICASSP.2019.8683346.

A comprehensive framework for visual quality assessment of light field tensor displays

I. Viola; K. Takahashi; T. Fujii; T. Ebrahimi 

2019. 

2018

Comparison of Interactive Subjective Methodologies for Light Field Quality Evaluation

I. Viola; T. Ebrahimi 

2018-09-04. 26th European Signal Processing Conference (EUSIPCO 2018), Rome, Italy, September 3-7, 2018. DOI : 10.23919/EUSIPCO.2018.8553518.

A new objective metric to predict image quality using deep neural networks

P. Akyazi; T. Ebrahimi 

2018-08-19. SPIE Optics + Photonics 2018, San Diego, CA, USA, August 19-23, 2018. DOI : 10.1117/12.2322709.

Absence of specific alternatively spliced exon of CD44 in macrophages prevents colitis

B. M. Wittig; R. Sabat; P. Holzloehner; E. Witte-Haendel; K. Heilmann et al. 

Mucosal Immunology. 2018-05-01. Vol. 11, num. 3, p. 846-860. DOI : 10.1038/mi.2017.98.

Quality Assessment Of Compression Solutions For Icip 2017 Grand Challenge On Light Field Image Coding

I. Viola; T. Ebrahimi 

2018-01-01. IEEE International Conference on Multimedia and Expo (ICMEW), San Diego, CA, Jul 23-27, 2018.

Rate Distortion Optimized Graph Partitioning for Omnidirectional Image Coding

M. Rizkallah; F. De Simone; T. Maugey; C. Guillemot; P. Frossard 

2018. European Signal Processing Conference (EUSIPCO), Rome, ITALY, Aug 03-07, 2018. p. 897-901.

A Novel Method for Sampling Bandlimited Graph Signals

D. E. O. Tzamarias; P. Akyazi; P. Frossard 

2018-01-01. European Signal Processing Conference (EUSIPCO), Rome, ITALY, Aug 03-07, 2018. p. 126-130.

Graph-Based Inpainting of Disocclusion Holes for Zooming in 3D Scenes

P. Akyazi; P. Frossard 

2018. European Signal Processing Conference (EUSIPCO), Rome, ITALY, Aug 03-07, 2018. p. 867-871.

Dynamic Adaptive Streaming for Multi-Viewpoint Omnidirectional Videos

X. Corbillon; F. De Simone; G. Simon; P. Frossard 

2018. ACM MMSys, Amsterdam, NETHERLANDS, Jun 12-15, 2018. p. 237-249. DOI : 10.1145/3204949.3204968.

JPEG Pleno: a standard framework for representing and signalling plenoptic modalities

P. Schelkens; Z. Y. Alpaslan; T. Ebrahimi; K-J. Oh; F. M. B. Pereira et al. 

2018-01-01. Conference on Applications of Digital Image Processing XLI, San Diego, CA, Aug 20-23, 2018. p. 107521P. DOI : 10.1117/12.2323404.

MMHealth 2017 Workshop on Multimedia for Personal Health and Health Care

S. Boll; T. Ebrahimi; C. Gurrin; L. Jalali; R. Jain et al. 

Ieee Multimedia. 2018-01-01. Vol. 25, num. 1, p. 7-11.

ICtCp Versus Y’CbCr

A. Perrin; M. Rerabek; W. Husak; T. Ebrahimi 

IEEE CONSUMER ELECTRONICS MAGAZINE. 2018. Vol. 7, num. 3, p. 38-47. DOI : 10.1109/MCE.0017.2714696.

A Reliable and Reversible Image Privacy Protection Based on False Colors

S. Ciftci; A. Akyuz; T. Ebrahimi 

IEEE TRANSACTIONS ON MULTIMEDIA. 2018. Vol. 20, num. 1, p. 68-81. DOI : 10.1109/TMM.2017.2728479.

A novel methodology for quality assessment of voxelized point clouds

E. Torlig; E. Alexiou; T. A. Fonseca; R. L. de Queiroz; T. Ebrahimi 

2018. SPIE Optical Engineering + Applications, San Diego, California, USA, August 19-23, 2018. p. 107520I. DOI : 10.1117/12.2322741.

Point cloud subjective evaluation methodology based on reconstructed surfaces

E. Alexiou; A. Pinheiro; C. Duarte; D. Matkovic; E. Dumic et al. 

2018. SPIE Optical Engineering + Applications, San Diego, CA, USA, August 19-23, 2018. p. 107520H. DOI : 10.1117/12.2321518.

Overview of the JPEG XS core coding system subjective evaluations

A. Willème; S. Mahmoudpour; I. Viola; K. Fliegel; J. Pospisil et al. 

2018. SPIE Optical Engineering + Applications, San Diego, California, USA, August 19-23, 2018. DOI : 10.1117/12.2323435.

A graph learning approach for light field image compression

I. Viola; H. Petric Maretic; P. Frossard; T. Ebrahimi 

2018. SPIE Optical Engineering + Applications, San Diego, California, USA, August 19-23, 2018. DOI : 10.1117/12.2322827.

A Rendering Solution to Display Light Field in Virtual Reality

E. Upenik; I. Viola; T. Ebrahimi 

2018. 26th European Signal Processing Conference (EUSIPCO), Rome, Italy, September 3-7, 2018. DOI : 10.23919/EUSIPCO.2018.8553424.

Impact of Visualisation Strategy for Subjective Quality Assessment of Point Clouds

E. Alexiou; T. Ebrahimi 

2018. IEEE International Conference on Multimedia & Expo Workshops (ICMEW), San Diego, California, USA, July 23-27, 2018. DOI : 10.1109/ICMEW.2018.8551498.

Benchmarking of Objective Quality Metrics for Colorless Point Clouds

E. Alexiou; T. Ebrahimi 

2018. Picture Coding Symposium (PCS), San Francisco, California, USA, June 24-27, 2018. DOI : 10.1109/PCS.2018.8456252.

Quality assessment of compression solutions for ICIP 2017 Grand Challenge on light field image coding

I. Viola; T. Ebrahimi 

2018. 2018 International Conference on Multimedia and Expo Workshops, San Diego, California, USA, July 23-27, 2018. DOI : 10.1109/ICMEW.2018.8551496.

Point Cloud Subjective Evaluation Methodology based on 2D Rendering

E. Alexiou; T. Ebrahimi; M. V. Bernardo; M. Pereira; A. Pinheiro et al. 

2018. Tenth International Conference on Quality of Multimedia Experience (QoMEX), Sardinia, Italy, May 29 – June 1, 2018. DOI : 10.1109/QoMEX.2018.8463406.

Comparison of Compression Efficiency between HEVC/H.265, VP9 and AV1 based on Subjective Quality Assessments

P. Akyazi; T. Ebrahimi 

2018. 10th International Conference on Quality of Multimedia Experience (QoMEX), Sardinia, Italy, May 29 – June 1, 2018.

Point Cloud Quality Assessment Metric Based on Angular Similarity

E. Alexiou; T. Ebrahimi 

2018. IEEE International Conference on Multimedia and Expo (ICME), San Diego, California, USA, July 23-27, 2018. DOI : 10.1109/ICME.2018.8486512.

VALID: Visual quality Assessment for Light field Images Dataset

I. Viola; T. Ebrahimi 

2018. 10th International Conference on Quality of Multimedia Experience (QoMEX), Sardinia, Italy, 29 May – 1 June, 2018. DOI : 10.1109/QoMEX.2018.8463388.

Quality assessment of an HDR dual-layer backward-compatible codec compared to uncompromised SDR and HDR solutions

A-F. N. M. Perrin; M. Rerabek; W. Husak; T. Ebrahimi 

IEEE transaction on broadcasting, special issue on Quality of Experience for advanced broadcast services. 2018. Vol. 64, num. 2, p. 422-431. DOI : 10.1109/TBC.2018.2823913.

Evaluation of ICtCp color space and an Adaptive Reshaper for HDR and WCG

A-F. N. M. Perrin; M. Rerabek; W. Husak; T. Ebrahimi 

IEEE CONSUMER ELECTRONICS MAGAZINE. 2018. Vol. 7, num. 3, p. 38-47. DOI : 10.1109/MCE.2017.2714696.

2017

JPEG XS call for proposals subjective evaluations

D. McNally; T. Bruylants; A. Willème; T. Ebrahimi; P. Schelkens et al. 

2017.  p. 103960P. DOI : 10.1117/12.2275137.

JPEG Privacy and Security framework for social networking and GLAM services

F. Temmermans; T. Ebrahimi; S. Foessel; J. Delgado; T. Ishikawa et al. 

Eurasip Journal On Image And Video Processing. 2017.  p. 68. DOI : 10.1186/s13640-017-0216-z.

High Dynamic Range Imaging Technology

A. Artusi; T. Richter; T. Ebrahimi; R. K. Mantiuk 

Ieee Signal Processing Magazine. 2017. Vol. 34, num. 5, p. 165-172. DOI : 10.1109/Msp.2017.2716957.

Comparison and evaluation of light field image coding approaches

I. Viola; M. Rerabek; T. Ebrahimi 

IEEE Journal of Selected Topics in Signal Processing. 2017. Vol. 11, num. 7, p. 1092-1106. DOI : 10.1109/JSTSP.2017.2740167.

On the performance of metrics to predict quality in point cloud representations

E. Alexiou; T. Ebrahimi 

2017. SPIE Optical Engineering + Applications, San Diego, California, USA, August 6-10, 2017. p. 103961H. DOI : 10.1117/12.2275142.

Towards subjective quality assessment of point cloud imaging in augmented reality

E. Alexiou; E. Upenik; T. Ebrahimi 

2017. IEEE 19th International Workshop on Multimedia Signal Processing (MMSP), Luton Bedfordshire, United Kingdom, October 16-18, 2017. DOI : 10.1109/MMSP.2017.8122237.

A new framework for interactive quality assessment with application to light field coding

I. Viola; T. Ebrahimi 

2017. SPIE Optical Engineering + Applications, San Diego, California, USA, August 6-10, 2017. p. 103961F. DOI : 10.1117/12.2275136.

Image Privacy Protection with Secure JPEG Transmorphing

L. Yuan; T. Ebrahimi 

IET Signal Processing. 2017. Vol. 11, num. 9, p. 1031-1038. DOI : 10.1049/iet-spr.2016.0756.