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A Simple Fusion Mehtod for Image Time Series Based on the Estimation of Image Temporal Validity

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A Simple Fusion Mehtod for Image Time Series Based on the Estimation of Image Temporal Validity

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dc.contributor.author	Bisquert Perles, María del Mar
dc.contributor.author	Bordogna, Gloria
dc.contributor.author	Bégué, Agnès
dc.contributor.author	Candiani, Gabriele
dc.contributor.author	Teisseire, Maguelonne
dc.contributor.author	Poncelet, Pascal
dc.date.accessioned	2015-12-29T08:46:10Z
dc.date.available	2015-12-29T08:46:10Z
dc.date.issued	2015
dc.identifier.citation	Bisquert Perles, María del Mar Bordogna, Gloria Bégué, Agnès Candiani, Gabriele Teisseire, Maguelonne Poncelet, Pascal 2015 A Simple Fusion Mehtod for Image Time Series Based on the Estimation of Image Temporal Validity Remote Sensing 7 704 724
dc.identifier.uri	http://hdl.handle.net/10550/49771
dc.description.abstract	High-spatial-resolution satellites usually have the constraint of a low temporal frequency, which leads to long periods without information in cloudy areas. Furthermore, low-spatial-resolution satellites have higher revisit cycles. Combining information from high- and low- spatial-resolution satellites is thought a key factor for studies that require dense time series of high-resolution images, e.g., crop monitoring. There are several fusion methods in the bibliography, but they are time-consuming and complicated to implement. Moreover, the local evaluation of the fused images is rarely analyzed. In this paper, we present a simple and fast fusion method based on a weighted average of two input images (H and L ), which are weighted by their temporal validity to the image to be fused. The method was applied to two years (2009-2010) of Landsat and MODIS (MODerate Imaging Spectroradiometer) images that were acquired over a cropped area in Brazil. The fusion method was evaluated at global and local scales. The results show that the fused images reproduced reliable crop temporal profiles and correctly delineated th e boundaries between two neighboring fields. The great est advantages of the proposed method are the execution time and ease of use, which allow us to obtain a fused image in less than five minutes.
dc.language.iso	eng
dc.relation.ispartof	Remote Sensing, 2015, vol. 7, p. 704-724
dc.subject	Ciències de la terra
dc.subject	Termodinàmica
dc.subject	Teledetecció
dc.title	A Simple Fusion Mehtod for Image Time Series Based on the Estimation of Image Temporal Validity
dc.type	journal article	es_ES
dc.date.updated	2015-12-29T08:46:11Z
dc.identifier.doi	10.3390/rs70100704
dc.identifier.idgrec	107465
dc.rights.accessRights	open access	es_ES