Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2005. / The next generation of small satellites will require significant onboard data processing
and information extraction capabilities to keep up with industry demands. The need for
value added information products is growing as accessibility and user education is
improving.
Image geo-referencing is one of the image processing steps needed to transform
raw images into usable information. Automating this process would result in a vast
improvement in processing time and cost.
As part of the background study, the imaging process is described and a model
of the process is created. The sources of distortion that are present in the imaging
process are described and techniques to compensate for them are discussed.
One method that stands out is using wavelet analysis for the precision geo-
referencing of images. Wavelets are used in this thesis for automatic ground control
point identification.
Finally, the automatic ground control point algorithm is used for band-alignment
of a set of aerial images at sub pixel accuracy as a demonstration of the quality of
ground control points that can be found.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/3095 |
| Date | 12 1900 |
| Creators | Van den Dool, Riaan |
| Contributors | Mostert, S., University of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : University of Stellenbosch |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | University of Stellenbosch |
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