Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/8564
Title: Introduction of sensor spectral response into image fusion methods. Application to wavelet-based methods
Author: Otazu Porter, Xavier
González-Audicana, María
Fors Aldrich, Octavi
Núñez de Murga, Jorge, 1955-
Keywords: Teledetecció
Processament d'imatges
Image processing
Image sensors
Remote sensing
Sensor fusion
Wavelet transforms
Issue Date: 2005
Publisher: IEEE
Abstract: Usual image fusion methods inject features from a high spatial resolution panchromatic sensor into every low spatial resolution multispectral band trying to preserve spectral signatures and improve spatial resolution to that of the panchromatic sensor. The objective is to obtain the image that would be observed by a sensor with the same spectral response (i.e., spectral sensitivity and quantum efficiency) as the multispectral sensors and the spatial resolution of the panchromatic sensor. But in these methods, features from electromagnetic spectrum regions not covered by multispectral sensors are injected into them, and physical spectral responses of the sensors are not considered during this process. This produces some undesirable effects, such as resolution overinjection images and slightly modified spectral signatures in some features. The authors present a technique which takes into account the physical electromagnetic spectrum responses of sensors during the fusion process, which produces images closer to the image obtained by the ideal sensor than those obtained by usual wavelet-based image fusion methods. This technique is used to define a new wavelet-based image fusion method.
Note: Reproducció del document publicat a http://dx.doi.org/10.1109/TGRS.2005.856106
It is part of: IEEE Transactions on Geoscience and Remote Sensing, 2005, vol. 43, núm. 10, p. 2376-2385.
URI: http://hdl.handle.net/2445/8564
ISSN: 0196-2892
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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