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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidade Federal do Paraná
2013
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| Online Access: | https://www.redalyc.org/articulo.oa?id=393937733005 |
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Table of Contents:
- HORIZONTAL POSITIONAL ACCURACY OF GOOGLE EARTH’S IMAGERY OVER RURAL AREAS: A STUDY CASE IN TAMAULIPAS, MEXICO Cutberto Uriel Paredes-Hernández Wilver Enrique Salinas-Castillo Francisco Guevara-Cortina Xicoténcatl Martínez-Becerra Ciencias de la Tierra CE95 Google Earth Horizontal RMSE Horizontal Positional Accuracy Due to the popularity of Google Earth (GE), users commonly assume that it is a credible and accurate source of information. Consequently, GE's imagery is frequently used in scientific and others projects. However, Google states that data available in their geographic products are only approximations and, therefore, their accuracy is not officially documented. In this paper, the horizontal positional accuracy of GE's imagery is assessed by means of comparing coordinates extracted from a rural cadastral database against coordinates extracted from well-defined and inferred check points in GE's imagery. The results suggest that if a large number of well-defined points are extracted from areas of high resolution imagery, GE's imagery over rural areas meets the horizontal accuracy requirements of the ASPRS for the production of "Class 1" 1:20,000 maps. Nonetheless, the results also show that georegistration and large horizontal errors occur in GE's imagery. Consequently, despite its overall horizontal positional accuracy, coordinates extracted from GE's imagery should be used with caution. 2013 artículo científico 1413-4853 https://www.redalyc.org/articulo.oa?id=393937733005 en http://www.redalyc.org/revista.oa?id=3939 Boletim de Ciências Geodésicas application/pdf Universidade Federal do Paraná Boletim de Ciências Geodésicas (Brasil) Num.4 Vol.19