In Remote Sensing, because of some parameters correlated to platform instabilities, sensor geometry, curvature and rotation of Earth, satellite images are affected by geometric distortions. A part of them is often corrected directly by the providers, while the other ones can be limited referencing the images to existing maps. In fact, when remotely sensed data, such as Landsat or MODIS (Moderate Resolution Imaging Spectroradiometer) or IKONOS images, are acquired, they are represented in geometric scheme by rows and columns. As the relationship between this raster format and real plane or geographic coordinates system is missing, a georeferencing process must be realized to obtain this correlation. In this paper methods to correct satellite images and to adapt them to cartographic representations are shown and the accuracy parameters are discussed with the aim to achieve results assessment. Applications are focalized on images concerning Campania Region with low (MODIS), medium (Landsat) and high (IKONOS) resolution.

Applications on geometric correction of different resolution satellite images

ERRICO, ANGELA;GUASTAFERRO, FRANCESCA;PARENTE, Claudio;SANTAMARIA, Raffaele
2010

Abstract

In Remote Sensing, because of some parameters correlated to platform instabilities, sensor geometry, curvature and rotation of Earth, satellite images are affected by geometric distortions. A part of them is often corrected directly by the providers, while the other ones can be limited referencing the images to existing maps. In fact, when remotely sensed data, such as Landsat or MODIS (Moderate Resolution Imaging Spectroradiometer) or IKONOS images, are acquired, they are represented in geometric scheme by rows and columns. As the relationship between this raster format and real plane or geographic coordinates system is missing, a georeferencing process must be realized to obtain this correlation. In this paper methods to correct satellite images and to adapt them to cartographic representations are shown and the accuracy parameters are discussed with the aim to achieve results assessment. Applications are focalized on images concerning Campania Region with low (MODIS), medium (Landsat) and high (IKONOS) resolution.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11367/2252
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