Search results for "multimedia"
showing 10 items of 692 documents
RSS Merger
2010
Editorial Preface
2009
A Study on Patch-Based Progressive Coding Schemes of Semi-Regular 3D Meshes for Local Wavelet Compression and View-Dependent Transmission
2010
International audience; This paper firstly introduces a wavelet-based segmentation for three-dimensional (3D) Semi-Regular (SR) meshes, as a pre-processing step, in a region-independent progressive coding algorithm. The proposed segmentation process aims at producing homogeneous regions with respect to their frequency amplitudes on the mesh surface, in other words: patches with different degrees of roughness. We have then studied the behavior of the wavelets, obtained during the independent coding of each region, especially close to the patch boundaries. The main contribution of this paper consists in considering three different possible wavelet decompositions, close to the region borders, …
Study and Comparison of Surface Roughness Measurements
2014
Journées du Groupe de Travail en Modélisation Géométrique (GTMG'14), Lyon; This survey paper focus on recent researches whose goal is to optimize treatments on 3D meshes, thanks to a study of their surface features, and more precisely their roughness and saliency. Applications like watermarking or lossy compression can benefit from a precise roughness detection, to better hide the watermarks or quantize coarsely these areas, without altering visually the shape. Despite investigations on scale dependence leading to multi-scale approaches, an accurate roughness or pattern characterization is still lacking, but challenging for those treatments. We think there is still room for investigations t…
All-Optical Measurement of Background, Amplitude and Timing Jitter for high speed pulse trains or prbs sequences using autocorrelation function
2006
We present a simple method for all-optical measurements of background, amplitude- and timing-jitter of ultra high speed pulse trains or prbs sequences using the jitter dependences of the intercorrelation-peak shape.
Cómo crear una actividad H5P de arrastrar las palabras en el Aula Virtual
2022
En este videotutorial se muestra cómo crear una actividad H5P de arrastrar las palabras en el Aula Virtual (moodle 3.11). Este trabajo forma parte del Proyecto de Innovación Docente Multimedia learning objects in moodle: Sustainable Development Goals (Ref: UV-SFPIE_PID-1640789) financiado por el Vicerectorado de Ocupación y Programas Formativos de la Universitat de València en el curso académico 2021/2022. Producción: Casañ-Núñez, Juan Carlos.
Il Teatro romano e la città di Augusta Bagiennorum. Guida archeologica multimediale
2016
Questa iniziativa editoriale è stata promossa in una versione ridotta nel libro Il teatro di Augusta Bagiennorum. Dallo studio dei resti all’ipotesi ricostruttiva del progetto architettonico. Il DVD porta a conclusione l’intero progetto di ricerca finalizzato alla restituzione dei principali edifici che furono realizzati nell’antica città romana proposta da Maria Cristina Preacco, funzionario della Soprintendenza per i Beni Archeologici fino al 2013.
Fantasmata - Percorso dell'Expo
2013
L'uso didattico del laboratorio multimediale per lo sviluppo delle competenze metacognitive e delle capacità di autovalutazione e problem solving neg…
2008
nel contributo si presenta la ricerca svolta sull’uso didattico del laboratorio multimediale per lo sviluppo delle competenze metacognitive e delle capacità di autovalutazione degli studenti universitari. Obiettivo dell'articolo è quello di richiamare l’attenzione sull’importanza dell’autoregolazione nello sviluppo dei processi di apprendimento, in particolare sull’uso delle tecnologie come strumenti didattici. Nello specifico si mette a fuoco in che modo sia possibile realizzare ambienti tecnologici in grado di promuovere l’autoregolazione negli studenti universitari. Si intende ripensare il ruolo della formazione universitaria, riconoscendo l’utilità didattica dell’uso delle ICT, al fine …
Splitting criterion for hierarchical motion estimation based on perceptual coding
1998
A new entropy-constrained motion estimation scheme using variable-size block matching is proposed. It is known that fixed-size block matching as used in most video codec standards is improved by using a multiresolution or multigrid approach. In this work, it is shown that further improvement is possible in terms of both the final bit rate achieved and the robustness of the predicted motion field if perceptual coding is taken into account in the motion estimation phase. The proposed scheme is compared against other variable- and fixed-size block matching algorithms.