Publications related to Uncompressed video

Fast and Future: Towards Efficient Forecasting in Video Semantic Segmentation

Deep learning has revolutionized the field of computer vision, a success largely attributable to the growing size of models, datasets, and computational power. Simultaneously, a critical pain point arises as several computer vision applications are deploye ...

EPFL2024

SoDaCam: Software-defined Cameras via Single-Photon Imaging

Edoardo Charbon, Claudio Bruschini, Andrei Ardelean, Mohit Gupta

Reinterpretable cameras are defined by their post-processing capabilities that exceed traditional imaging. We present "SoDaCam" that provides reinterpretable cameras at the granularity of photons, from photon-cubes acquired by single-photon devices. Photon ...

Ieee Computer Soc2023

Adaptive extreme video completion

Sabine Süsstrunk, Radhakrishna Achanta, Majed El Helou, Ruofan Zhou

A computer-implemented video completion method is proposed for reconstructing a sparsely sampled video comprising sparsely sampled video frames comprising sparse sets of picture element intensity values. The method comprises: distributing the sparse sets o ...

2021

Decentralized Stochastic Optimization and Gossip Algorithms with Compressed Communication

Martin Jaggi, Sebastian Urban Stich, Anastasiia Koloskova

We consider decentralized stochastic optimization with the objective function (e.g. data samples for machine learning task) being distributed over n machines that can only communicate to their neighbors on a fixed communication graph. To reduce the communi ...

2019

Direct measurement of Lighthill's energetic efficiency of a minimal magnetic microswimmer

Ignacio Pagonabarraga Mora

The realization of artificial microscopic swimmers able to propel in viscous fluids is an emergent research field of fundamental interest and vast technological applications. For certain functionalities, the efficiency of the microswimmer in converting the ...

2019

Overview of the JPEG XS core coding system subjective evaluations

Touradj Ebrahimi, Irene Viola, Jakub Pospisil, Benoît Macq

The JPEG committee (Joint Photographic Experts Group, formally known as ISO/IEC SC29 WG1) is currently in the process of standardizing JPEG XS, a new interoperable solution for low-latency, lightweight and visually lossless compression of image and video. ...

Spie-Int Soc Optical Engineering2018

Adaptive-Rate Reconstruction of Time-Varying Signals with Application in Compressive Foreground Extraction

Volkan Cevher

We propose and analyze an online algorithm for reconstructing a sequence of signals from a limited number of linear measurements. The signals are assumed sparse, with unknown support, and evolve over time according to a generic nonlinear dynamical model. O ...

Institute of Electrical and Electronics Engineers2016

Adaptive-Rate Sparse Signal Reconstruction With Application in Compressive Foreground Subtraction

Volkan Cevher

We propose and analyze an online algorithm for reconstructing a sequence of signals from a limited number of linear measurements. The signals are assumed sparse, with unknown support, and evolve over time according to a generic nonlinear dynamical model. O ...

Institute of Electrical and Electronics Engineers2016

UHD Video Dataset for Evaluation of Privacy

Touradj Ebrahimi

Ultra High Definition (UHD) is one of the emerging immersive video technologies already available to public, as even some of the smartphones are capable of capturing UHD video. The increasingly widespread availability of UHD capable recording devices has i ...

2014

Method of providing scalable video coding (svc) video content with added media content

Pascal Frossard, Jakov Cakareski

A method of providing SVC video content with added media content, comprising the steps of: receiving an original video content transmitted from a remote site in a bit stream and including original video encoding parameters decoding said original video enco ...

2013

A High–Performance Parallel Implementation of the Chambolle Algorithm

David Atienza Alonso, Abdulkadir Akin, Ivan Beretta, Alessandro Antonio Nacci

The determination of the optical flow is a central problem in image processing, as it allows to describe how an image changes over time by means of a numerical vector field. The estimation of the optical flow is however a very complex problem, which has be ...

ACM and IEEE Press2011

Prioritized Distributed Video Delivery with Randomized Network Coding

Pascal Frossard, Jakov Cakareski, Nikolaos Thomos

We address the problem of prioritized video streaming over lossy overlay networks. We propose to exploit network path diversity via a novel Randomized Network Coding (RNC) approach that provides unequal error protection (UEP) to the packets conveying the v ...

2011

Subjective quality assessment of H.264/AVC video streaming with packet losses

Touradj Ebrahimi, Francesca De Simone, Frédéric Dufaux

Research in the field of video quality assessment relies on the availability of subjective scores, collected by means of experiments in which groups of people are asked to rate the quality of video sequences. The availability of subjective scores is fundam ...

Hindawi Publishing Corporation2011

Subjective assessment of H.264/AVC video sequences transmitted over a noisy channel

Touradj Ebrahimi, Francesca De Simone, Frédéric Dufaux

In this paper we describe a database containing subjective assessment scores relative to 78 video streams encoded with H.264/AVC and corrupted by simulating the transmission over error-prone network. The data has been collected from 40 subjects at the prem ...

2009

Bayesian methods for visual multi-object tracking with applications to human activity recognition

Kevin Smith

In recent years, we have seen a dramatic increase in the amount of video data recorded and stored around the world. Driven by the availability of low-cost video cameras, the ever-decreasing cost of digital media storage, and the explosion in popularity of ...

EPFL2007

Advanced virtual reality technologies for surveillance and security applications

Daniel Thalmann, Frédéric Vexo, Renaud Ott

We present a system that exploits advanced Virtual Reality technologies to create a surveillance and security system. Surveillance cameras are carried by a mini Blimp which is tele-operated using an innovative Virtual Reality interface with haptic feedback ...

2006

Advanced Mixed Reality Technologies for Surveillance and Risk Prevention Applications

Daniel Thalmann, Patrick Salamin, Frédéric Vexo, Renaud Ott

We present a system that exploits advanced Mixed and Virtual Reality technologies to create a surveillance and security system that could be also extended to define emergency prevention plans in crowdy environments. Surveillance cameras are carried by a mi ...

2006

Efficient error correction solutions for OFDM based digital video

Mauro Lattuada

The robustness of the delivery of digital compressed video streams has always been one of the main topic of the standardization bodies to assure the Quality of the Service (QoS). The MPEG standard which is nowadays the reference for digital television defi ...

EPFL2005

Semantic Video Analysis for Adaptive Content Delivery and Automatic Description

Touradj Ebrahimi, Andrea Cavallaro, Olivier Steiger

We present an encoding framework which exploits semantics for video content delivery. The video content is organized based on the idea of main content message. In the work reported in this paper, the main content message is extracted from the video data th ...

2005