digital photography dr. m. m. yagoub department of geography faculty of humanities and social...
Post on 19-Dec-2015
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Digital Photography Dr. M. M. Yagoub
Department of GeographyFaculty of Humanities and Social SciencesUnited Arab Emirates UniversityP. O. Box 17771, Al-Ain United Arab Emirates Tel: 00971-3-7064-674 (O)Tel: 00971-3-7612-316 (H)Fax: 00971-3-7671-706
E-mail: [email protected]: [email protected] URL : http://www.angelfire.com/mo/yagoub
Digital/Softcopy photogrammetry• Softcopy photogrammetry is based on digital (softcopy)
raster image as distinct from conventional photogrammetry, based on film (hardcopy) images
• Digital systems are considered third generation photogrammetric instruments (workstation-Digital image Analytical Plotter -DiAP), after analytical (second generation) and analog (first generation) stereo-plotters
• Equipment used in digital photogrammetry include Computer, Scanner, CCD cameras, LCD Eyewear (stereo viewing)
• Orthophoto and Digital Elevation Model (DEM) can be generated from Softcopy photogrammetry
Comparison of photographic versus Electronic image processing
Characteristic Photographic Electronic
Data capture Silver halide Solid state
Data storage film Magnetic, optical, and solid state media
Data manipulation Chemical developing and optical printing
Digital image processing
Data transmission Mail, delivery, fax Telemetry, telephone, computer network
softcopy display Projected slides or movies
Monitor, television, projection video
Hard copy display Silver halide prints Inkjet, thermal, and laser printers/plotters