Oliveira JRF Author

Research Article Open Access

Fusion Based on Geostatistics to Improve the Altimetry Accuracies of Digital Elevation Models

Author(s):

Felgueiras CA, Ortiz JO, Camargo ECG, Namikawa LM, Rosim S, Oliveira JRF, Renno CD, Sant’Anna SJS and Monteiro AMV

Fusions based on geostatistical methods are used in this article to improve the accuracy of the altimetry attribute of Digital Elevation Models (DEMs). Ordinary kriging, kriging with external drift, regression kriging and cokriging procedures, are applied to assess uncertainty representations from which it is possible to get altimetry predictions and other information. The fusion data modeling is performed from existing DEMs, mainly available for free in the internet, and additional high accurate set of 3D sample points. Although the freeware DEMs are dense and generally have good spatial distributions, the accuracy of their altimetry information
might not be suitable for many applications. A way of mitigating this problem is to com... view more»

DOI: 10.4172/2327-4581.1000179

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