Analysis of the Effects of Pansharpening in Change Detection on VHR Images

In this letter, we investigate the effects of pansharpening (PS) applied to multispectral (MS) multitemporal images in change-detection (CD) applications. Although CD maps computed from pansharpened data show an enhanced spatial resolution, they can suffer from errors due to artifacts induced by the...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2010-01, Vol.7 (1), p.53-57
Main Authors: Bovolo, F., Bruzzone, L., Capobianco, L., Garzelli, A., Marchesi, S., Nencini, F.
Format: Article
Language:English
Subjects:
Algorithms
Availability
Change detection (CD)
Earth
Environmental management
Image analysis
Image resolution
pansharpening (PS)
Performance analysis
Performance evaluation
Polystyrene resins
Quantitative analysis
Remote monitoring
Similarity
similarity measure
Spatial resolution
Strategy
very high geometrical resolution (VHR) images
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Summary:In this letter, we investigate the effects of pansharpening (PS) applied to multispectral (MS) multitemporal images in change-detection (CD) applications. Although CD maps computed from pansharpened data show an enhanced spatial resolution, they can suffer from errors due to artifacts induced by the fusion process. The rationale of our analysis consists in understanding to which extent such artifacts can affect spatially enhanced CD maps. To this end, a quantitative analysis is performed which is based on a novel strategy that exploits similarity measures to rank PS methods according to their impact on CD performance. Many multiresolution fusion algorithms are considered, and CD results obtained from original MS and from spatially enhanced data are compared.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2009.2029248