Slow Motion and Zoom in HD Digital Videos Using Fractals

International Journal of Digital Multimedia Broadcasting. 2009;2009 DOI 10.1155/2009/496934

 

Journal Homepage

Journal Title: International Journal of Digital Multimedia Broadcasting

ISSN: 1687-7578 (Print); 1687-7586 (Online)

Publisher: Hindawi Publishing Corporation

LCC Subject Category: Technology: Electrical engineering. Electronics. Nuclear engineering: Telecommunication

Country of publisher: Egypt

Language of fulltext: English

Full-text formats available: PDF, HTML, ePUB, XML

 

AUTHORS

Maurizio Murroni (DIEE, University of Cagliari, Piazza D'Armi, 09123 Cagliari, Italy)
Cristian Perra (DIEE, University of Cagliari, Piazza D'Armi, 09123 Cagliari, Italy)
Daniele D. Giusto (DIEE, University of Cagliari, Piazza D'Armi, 09123 Cagliari, Italy)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 17 weeks

 

Abstract | Full Text

Slow motion replay and spatial zooming are special effects used in digital video rendering. At present, most techniques to perform digital spatial zoom and slow motion are based on interpolation for both enlarging the size of the original pictures and generating additional intermediate frames. Mainly, interpolation is done either by linear or cubic spline functions or by motion estimation/compensation which both can be applied pixel by pixel, or by partitioning frames into blocks. Purpose of this paper is to present an alternative technique combining fractals theory and wavelet decomposition to achieve spatial zoom and slow motion replay of HD digital color video sequences. Fast scene change detection, active scene detection, wavelet subband analysis, and color fractal coding based on Earth Mover's Distance (EMD) measure are used to reduce computational load and to improve visual quality. Experiments show that the proposed scheme achieves better results in terms of overall visual quality compared to the state-of-the-art techniques.