![]() ![]() The issue was brought home to me this week when I invited a small group of GIS professionals and Engineering staff (both licensed civil engineers and engineering technicians) to drop by my desk to have a look at these stereo photos. The fields that used to derive benefit from hard copy stereo imagery - topography, geology, forestry, hydrology, even the US military - all seem to have lost their institutional 'feel' for the usefulness of stereo imagery analysis. Of course photogrammetrists still process, manage and analyze stereo imagery, but it's all done on high end digital systems these days. Software routines now handle most analysis tasks. But with the rise of commercial satellite imagery, the slow demise of wet process aerial film cameras and the development of digital imagery analysis systems like ERDAS Imagine and ESRI's improved raster management routines in ArcGIS there has been less and less call for hard copy stereo image analysis. There was a time when analyzing stereo images was a critical skill in my field and other related fields. ![]()
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