HUT Photogrammetry and Remote Sensing
The stereoscopic interpretation of the glacier surface was done with an
optical mirror stereoscope using the enlarged paper prints from the f =
500 mm photography.
Additionally, all natural breaklines and visual discontinuities caused
by occlusions were identified stereoscopically.
Measuring of surface points
The selected surface batches were digitized as tringles using a digital
stereo comparator program called "TKK Kuvamittaus". This was done from
relatively oriented image pairs which were rectified to the normal case
of stereo. The parallax measurements were transformed to 3-D model coordinates.
The object model was built as a 3-D TIN model based directly on the measured
model coordinates. The TIN models were produced using the TargetJr.
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