Search Results for author: Narciso García

Found 12 papers, 2 papers with code

Energy- and Quality-Aware Video Request Policy for Wireless Adaptive Streaming Clients

no code implementations8 Feb 2024 César Díaz, Antonio Fernández, Fernando Sacristán, Narciso García

This policy relies on the relationship between the available channel bandwidth and the bit rate of the representations in the quality ladder.

XLR (piXel Loss Rate): a Lightweight Indicator to Measure Video QoE in IP Networks

no code implementations8 Feb 2024 César Díaz, Pablo Pérez, Julián Cabrera, Jaime Ruiz, Narciso García

A novel Key Quality Indicator for video delivery applications, XLR (piXel Loss Rate), is defined, characterized, and evaluated.

Perceptually Equivalent Resolution in Handheld Devices for Streaming Bandwidth Saving

no code implementations7 Feb 2024 Mateo Cámara, César Díaz, Juan Casal, Jorge Ruano, Narciso García

The results prove that the equivalent resolution in current handheld devices is 720p as higher resolutions are not valued by users.

A Video-Aware FEC-Based Unequal Loss Protection System for Video Streaming over RTP

no code implementations7 Feb 2024 César Díaz, Julián Cabrera, Fernando Jaureguizar, Narciso García

A video-aware unequal loss protection (ULP) system for protecting RTP video streaming in bursty packet loss networks is proposed.

Soccer line mark segmentation and classification with stochastic watershed transform

no code implementations14 Aug 2021 Daniel Berjón, Carlos Cuevas, Narciso García

Augmented reality applications are beginning to change the way sports are broadcast, providing richer experiences and valuable insights to fans.

Camera Calibration Edge Detection +1

Methodology to Assess Quality, Presence, Empathy, Attitude, and Attention in 360-degree Videos for Immersive Communications

no code implementations3 Mar 2021 Marta Orduna, Pablo Pérez, Jesús Gutiérrez, Narciso García

This paper analyzes the joint assessment of quality, spatial and social presence, empathy, attitude, and attention in three conditions: (A)visualizing and rating the quality of contents in a Head-Mounted Display (HMD), (B)visualizing the contents in an HMD, and (C)visualizing the contents in an HMD where participants can see their hands and take notes.

Multimedia Human-Computer Interaction

FVV Live: A real-time free-viewpoint video system with consumer electronics hardware

no code implementations1 Jul 2020 Pablo Carballeira, Carlos Carmona, César Díaz, Daniel Berjón, Daniel Corregidor, Julián Cabrera, Francisco Morán, Carmen Doblado, Sergio Arnaldo, María del Mar Martín, Narciso García

The system has been designed to yield high-quality free-viewpoint video using consumer-grade cameras and hardware, which enables low deployment costs and easy installation for immersive event-broadcasting or videoconferencing.

FVV Live: Real-Time, Low-Cost, Free Viewpoint Video

no code implementations30 Jun 2020 Daniel Berjón, Pablo Carballeira, Julián Cabrera, Carlos Carmona, Daniel Corregidor, César Díaz, Francisco Morán, Narciso García

FVV Live is a novel real-time, low-latency, end-to-end free viewpoint system including capture, transmission, synthesis on an edge server and visualization and control on a mobile terminal.

Optimal Piecewise Linear Function Approximation for GPU-based Applications

no code implementations10 Oct 2015 Daniel Berjón, Guillermo Gallego, Carlos Cuevas, Francisco Morán, Narciso García

The proposed technique is a perfect match for any application requiring the evaluation of continuous functions, we have measured in detail its quality and efficiency on several functions, and, in particular, the Gaussian function because it is extensively used in many areas of computer vision and cybernetics, and it is expensive to evaluate.

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