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Compositing multitemporal remote sensing data sets

Pecora 12 Symposium

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Abstract

To eliminate cloud and atmosphere-affected pixels, the compositing of multi temporal remote sensing data sets is done by selecting the maximum vale of the normalized different vegetation index (NDVI) within a compositing period. The NDVI classifier, however, is strongly affected by surface type and anisotropic properties, sensor viewing geometries, and atmospheric conditions. Consequently, the composited, multi temporal, remote sensing data contain substantial noise from these external conditions. Consequently, the composited, multi temporal, remote sensing data contain substantial noise from these external effects. To improve the accuracy of compositing products, two key approaches can be taken: one is to refine the compositing classifier (NDVI) and the other is to improve existing compositing algorithms. In this project, an alternative classifier was developed and an alternative pixel selection criterion was proposed for compositing. The new classifier and the alternative compositing algorithm were applied to an advanced very high resolution radiometer data set of different biome types in the United States. The results were compared with the maximum value compositing and the best index slope extraction algorithms. The new approaches greatly reduced the high frequency noises related to the external factors and repainted more reliable data. The results suggest that the geometric-optical canopy properties of specific biomes may be needed in compositing. Limitations of the new approaches include the dependency of pixel selection on the length of the composite period and data discontinuity.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Compositing multitemporal remote sensing data sets
Series title:
Pecora 12 Symposium
Year Published:
1993
Language:
English
Publisher:
American Society for Photogrammetry and Remote Sensing
Publisher location:
Bethesda, MD
Description:
8 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
206
Last page:
213
Number of Pages:
8