photogrammetry

Photogrammetry is a measurement technology in which the three-dimensional coordinates of points on an object are determined by measurements made in two or more photographic images taken from different positions.Common points are identified on each image. A line of sight (or ray) can be constructed from the camera location to the point on the object. It is the intersection of these rays (triangulation) that determines the three dimensional location of the point. More sophisticated algorithms can exploit other information about the scene that is known a priori, for example symmetries, in some cases allowing reconstructions of 3D coordinates from only one camera position.The technique is used in different fields, such as topographic mapping, architecture, engineering, police investigation, geology and by aerial archaeologyarchaeologists to quickly produce plans of large or complex sites. It is also used to combine live-action with computer generated imagery in movie post-production.Algorithms for photogrammetry typically express the problem as that of minimizing the sum of the squares of a set of errors. The minimization is itself often performed using the Levenberg-Marquardt algorithm.

External links -

isprs.org - International Society for Photogrammetry and Remote Sensing

asprs.org - American Society for Photogrammetry and Remote Sensing

univie.ac.at - Introduction to Photogrammetry from University of Vienna

See also -

Videogrammetry

Geomatics engineeringtech-stub !cs:Fotogrammetriede:photogramm etriees:Fotogrametríafr:Photo grammétrienl:Fotogrammetriezh :摄影测量学

ASPRS
American Society of Photogrammetry and Remote Sensing: The imaging and geospatial information society.
http://www.asprs.org/

ScienceDirect
Research papers published on the net , subscription required for some sections.
http://www.sciencedirect.com