<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Hyperspectral imagery originating from airborne sensors is nowadays widely used for the detailed characterization of land surface. The correct mapping of the pixel positions to ground locations largely contributes to the success of the applications. Accurate geometric correction, also referred to as “orthorectification”, is thus an important prerequisite which must be performed prior to using airborne imagery for evaluations like change detection, or mapping or overlaying the imagery with existing data sets or maps. A so-called “ortho-image” provides an accurate representation of the earth’s surface, having been adjusted for lens distortions, camera tilt and topographic relief. In this paper, we describe the different steps in the geometric correction process of APEX hyperspectral data, as applied in the Central Data Processing Center (CDPC) at the Flemish Institute for Technological Research (VITO, Mol, Belgium). APEX ortho-images are generated through direct georeferencing of the raw images, thereby making use of sensor interior and exterior orientation data, boresight calibration data and elevation data. They can be referenced to any userspecified output projection system and can be resampled to any output pixel size.</p></abstract>

Hyperspectral imagery originating from airborne sensors is nowadays widely used for the detailed characterization of land surface. The correct mapping of the pixel positions to ground locations largely contributes to the success of the applications. Accurate geometric correction, also referred to as “orthorectification”, is thus an important prerequisite which must be performed prior to using airborne imagery for evaluations like change detection, or mapping or overlaying the imagery with existing data sets or maps. A so-called “ortho-image” provides an accurate representation of the earth’s surface, having been adjusted for lens distortions, camera tilt and topographic relief. In this paper, we describe the different steps in the geometric correction process of APEX hyperspectral data, as applied in the Central Data Processing Center (CDPC) at the Flemish Institute for Technological Research (VITO, Mol, Belgium). APEX ortho-images are generated through direct georeferencing of the raw images, thereby making use of sensor interior and exterior orientation data, boresight calibration data and elevation data. They can be referenced to any userspecified output projection system and can be resampled to any output pixel size.

Geometric correction of APEX hyperspectral data

Flemish Institute for Technological Research (VITO NV), Belgium

Miscellanea Geographica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Geometric correction of APEX hyperspectral data"}

Hyperspectral imagery originating from airborne sensors is nowadays widely used for the detailed characterization of land surface. The correct mapping of the...

Geometric correction of APEX hyperspectral data

Published Online: Apr 20, 2016

Page range: 11 - 15

Received: Jun 08, 2015

Accepted: Jan 14, 2016

DOI: https://doi.org/10.1515/mgrsd-2016-0006

Keywords
Hyperspectral, APEX, Geometric correction, Airborne, Georeferencing, Boresight calibration

© by Kristin Vreys

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Geometric correction of APEX hyperspectral data

Published Online: Apr 20, 2016

Page range: 11 - 15

Received: Jun 08, 2015

Accepted: Jan 14, 2016

DOI: https://doi.org/10.1515/mgrsd-2016-0006

KeywordsHyperspectral, APEX, Geometric correction, Airborne, Georeferencing, Boresight calibration

© by Kristin Vreys

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Hyperspectral, APEX, Geometric correction, Airborne, Georeferencing, Boresight calibration