Observatorio de I+D+i UPM

Memorias de investigación
Book chapters:
Efficient multidirectional satellite image fusion based on Shearlet Transform
Year:2013
Research Areas
  • Agriculture,
  • Remote sensing,
  • Processing and signal analysis
Information
Abstract
A huge number of image fusion methods have appeared since the irruption of wavelets during last decades. New tools for multiscale geometric analysis (MGA) have been developed to improve the directional sensitivity. In this context appeared the Shearlet transform that is able to capture directional information and is equipped with a rich mathematical structure associated to multiresolution analysis. This transform has already shown its suitability to provide excellent results in image processing problems as denoising, image enhancement, image separation, edge detection and estimation of geometric features. The aim of this study is double: First to check the advantages of this transform for fusion comparing with Wavelet transform, and second to propose an efficient multidirectional & multiresolution algorithm to fuse panchromatic (PAN) and multispectral (MS) satellite images for SEOSAT, a Spanish satellite that will be launched in a next years. Four different methods are compared using Wavelet á trous transform (WAT) and Non-Subsampled Shearlet Transform (NSST). Results show that for simple fusion algorithms Shearlet Transform improves the Wavelet one but this is not true in general when comparing with a more complex fusion scheme like WAT weighted with Fractal Dimension Maps. Besides, a Shearlet based algorithm weighted with initial correlation provides as good results as more complex algorithms with a considerable reduction of computation time. Keywords. Shearlet transform, fusion image, multidirectional, multiresolution
International
Si
Book Edition
1
Book Publishing
IOS PRESS
ISBN
978-88-89693-34-6
Series
European Association of Remote Sensing Laboratories Proceedings
Book title
Towards Horizon 2020: Earth Observation and Social Perspectives
From page
761
To page
772
Participants
  • Autor: Alberto Pizarro Rubio (UPM)
  • Autor: Consuelo Gonzalo Martin (UPM)
  • Autor: Mario Fernando Lillo Saavedra (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Arquitectura y Tecnología de Sistemas Informáticos
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)