H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/31
H04N 7/18 (2006.01)
Patent
CA 1254651
ABSTRACT A new digital procedure for generating and processing scanner- images is presented. The terrain is scanned by an opto-electronic three- line scan camera from aircraft, missiles or spacecraft. Three linear sensor arrays are arranged in the focal plane of the camera objective per- pendicularly to the flight course. Each sensor array produces an image strip of the covered terrain according to the push broom principle. Nodes of the digital elevation model (DEM) to be computed are selected in the middle image strip whose object planes are nearly vertical. The conjugate image points in the other two image strips are determined by area correlation methods. The coordinates of all these image points and a few control points are inserted into a least squares adjustment for computing the orientation parameters of the camera along its entire flight course and the coordinates of the digital elevation model. Rasterplots of ortho- and stereo-ortho- photos are produced after the digital rectification of the image strips, utilizing the nodes of the DEM grid.
455898
Fetherstonhaugh & Co.
Lfk-Lentflugkorpersysteme Gmbh
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