Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
The @photogrammetric record
12 (1988), S. 0
ISSN:
1477-9730
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Architecture, Civil Engineering, Surveying
Notes:
Military systems are becoming far more demanding in their requirement for geographical information. Military Survey must be able to support these requirements and consequently undertake a continuous evaluation of new potential sources and exploitation systems. In considering SPOT data, both the improved spatial resolution and the three dimensional capability afforded by the system must be investigated. Military Survey, together with universities and industry, is conducting trials on the accuracy and detail obtainable from both film and digital data. This paper will consider the three dimensional geometric fidelity of SPOT data using three different systems. The first exploits the data as a stereopair of diapositives using an analytical plotter. The second is a hybrid system in that the stereoscopic digital data are loaded into an image processing workstation which projects a stereo-image onto a split screen. This is then treated as “hardcopy” and is interactively exploited by a conventional stereoscope. The third system is completely digital in that height extraction is undertaken within a digital environment incorporating autocorrelation routines. Overall system errors of 10 m to 12 m (σ) were recorded for each exploitation system. Digital elevation model accuracies varied depending upon terrain type and image contrast.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1477-9730.1988.tb00632.x
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