Photogrammetry
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Photogrammetry is the art and science of obtaining reliable measurements by photography (metric photogrammetry) and qualitative evaluation of image data (photo interpretation). It includes use of terrestrial, close-range, aerial, vertical, oblique, strip, and space photographs along with their interpretation.
Scale formulas are as follows:
Photo scale=ab/AB=f/(H-h1)
where f =focal length of lens, in (m)
H =flying height of airplane above datum (usually mean sea level), ft (m)
h1 =elevation of point, line, or area with respect to datum, ft (m)
November 7th, 2007 at 9:06 pm
thanx
August 12th, 2008 at 7:43 am
Will this kind of survey is useful as i know this is not used by many.
January 17th, 2009 at 5:47 am
We need detailed information about Photogrammetry.
Sivakumar Kakarla
June 9th, 2009 at 7:14 pm
what is the basic principle of photogrammetry?
tell me how it is use with detail mathematical expression.