Sponsor
Portland State University. Department of Civil Engineering
First Advisor
Kendall B. Wood
Date of Publication
1979
Document Type
Thesis
Degree Name
Master of Science in Engineering (MSE)
Department
Civil Engineering
Language
English
Subjects
United States. Army. Corps of Engineers. Portland District -- Civil functions, Photogrammetry, Surveying
DOI
10.15760/etd.2890
Physical Description
1 online resource (118 p.)
Abstract
The acquisition of terrain data from aerial photography using digital photogrammetric methods gives the engineer and planner an economical alternative to conventional ground surveys. This paper describes a complete photogrammetric digitizing system developed for the Portland District Army Corps of Engineers. The hardware of the system consists of a
Wild AlO first order stereoplotter interfaced to an Altec AC-74 coordinate digitizer which is interfaced to both a Hewlett Packard 9810A programmable calculator and a Digi-Data nine-track magnetic tape recorder. The software of the system consists of photogrammetric routines developed for online computation by the programmable calculator and a sophisticated FORTRAN IV program called PHOTDIG which processes the digitized photogrammetric data from the nine-track magnetic tape at the Corps of Engineers data processing facility which contains an IBM 370 computer and a Calcomp 748 precision flatbed plotter. The processing of the digitized data by PHOTDIG produces terrain information required by engineers and planners such as state plane coordinates, elevations, cross-sections, profiles, etc. in both digital and graphical formats. The system has been in production use for over two years in the Portland District Photogrammetry Section and has significantly increased the efficiency and economy of photogrammetric data acquisition.
Rights
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
http://archives.pdx.edu/ds/psu/17365
Recommended Citation
Gorshe, Frank Richard, "Photogrammetric Digitizing System" (1979). Dissertations and Theses. Paper 2896.
https://doi.org/10.15760/etd.2890
Comments
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