Een automatische procedure ter verkrijging van corresponderende punten in Caesar-beelden

Een automatische procedure ter verkrijging van corresponderende punten in Caesar-beelden

Looyen, W.J.

Kalshoven, A.W.B. (mentor)
Lemmens, M.J.P.M. (mentor)
Verhoef, W. (mentor)

Civil Engineering and Geosciences

Fotogrammetrie en remote sensing

1988-02

This report describes an automatic procedure in finding corresponding points in CAESAR-images. CAESAR is a multispectral scanner jointly developed by the Nationaal Lucht- en Ruimtevaartlaboratorium (National Aerospace Laboratory) and Technisch-Physische Dienst. First, the ' CAESAR-images are geometrically corrected by the software-package OPTIPARES, using inertial system data and a geometrical analysis is performed. These images are then used in an automatic procedure to calculate the geometrical transformation-model between these images. This is done in order to use the spectral information as good as possible. Correlation-techniques are used within this procedure. By using two images, in the first image interesting points are found by using the Moravec-operator. The corresponding points in the second image are determined by a ~2D-cross-correlation. From the -two point-lists the geometrical transformation-model can be calculated. In the opinion of the NLR, a shift is sufficient in this model. The results show that this assumption can not hold. Higher-order polynomals give better results. When the geometrical transformation-model is known, a resampling takes place to match the images

http://resolver.tudelft.nl/uuid:5fe74425-a747-4600-8e3a-ad142ab33f58

Student theses

master thesis

(c) 1988 W.J. Looyen