Geometric correction of APEX hyperspectral data
Journal Title: Miscellanea Geographica - Regional Studies on Development - Year 2016, Vol 20, Issue 1
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.
Authors and Affiliations
Kristin Vreys, Marian-Daniel Iordache, Jan Biesemans, Koen Meuleman
Keywords
Related Articles
- EP ID EP182788
- DOI 10.1515/mgrsd-2016-0006
- Views 83
- Downloads 0
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 pixel positions to ground locations largely contributes to the...
Perception of urban safety: the case of Lublin, Poland
The aim of the study was to evaluate safety and its underlying factors among the inhabitants of Lublin. The findings are based on a questionnaire with 33 detailed questions conducted in May 2012 in all districts of the c...
ISSUES OF SECONDARY SUCCESSION IN THE SUBALPINE FOREST GLADES OF THE CARPATHIAN MOUNTAINS. (CASE STUDY)
Results of research on the process of spontaneous overgrowth of subalpine forest glades in the Gorce National Park are presented in the paper. Research was carried out in 2006-2008. The condition and directions of change...
STORMS IN EUROPE (1994-2005) -THEIR RELATIONSHIP WITH CONTINENTALITY OF CLIMATE
The objective of the paper is to determine the influence of continentality of Europe’s climate, increasing to the east, on the number of days with thunderstorms during the years 1994-2005 in ten chosen European cities. I...
FUNCTIONING OF HYDROGENIC LANDSCAPES THE UPPER WLODAWKA RIVER CATCHMENT BASIN
In the dissertation, I analysed two aspects of the Polesie Lubelskie landscape. The first is the historical aspect - changes in the landscape in the 19th and 20th centuries. In evaluating such changes I relied on the exi...