Transcript Photogrammetry - United Arab Emirates University

Digital Photography
Dr. M. M. Yagoub
Department of Geography
Faculty of Humanities and Social Sciences
United Arab Emirates University
P. O. Box 17771, Al-Ain
United Arab Emirates
Tel: 00971-3-7064-674
Tel: 00971-3-7612-316
Fax: 00971-3-7671-706
(O)
(H)
E-mail: [email protected]
E-mail: [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