New Photoreducers,
Abstract
Enterprises of the GMGK have recently been equipped with stereophotogrammetric devices and the techniques of photogrammetric bunching have been improved. This permitted a considerable reduction in the geodetic network of field points for preparation of aerophotos in topographic mapping on scales of 1:25,000 and 1:10,000. New photoreducers have been developed (the single-projector PRS and the four-projector model) which permit direct optical reduction of grids of 80-90 cm to a base scale with an error of no more than 0.2-0.3 mm (averaging 0.10-0.15 mm). In the extensive development of the analytic method of three-dimensional phototriangulation, the use of the new photoreducers has great promise since they are needed for all work where photogrammetric bunching is done on a general-purpose instrument. The four-projector device detects and avoids patterned distortions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 04, 1974
- Accession Number
- AD0784290
Entities
People
- N. P. Kozhevnikov
Organizations
- United States Army Foreign Science and Technology Center