By John Fryer, Harvey Mitchell, Jim Chandler
This awesome new booklet unearths via a chain of case stories how smooth electronic photogrammetry is able to supplying dense and exact spatial information to unravel a variety of modern size difficulties, and at a various diversity of scales. It outlines key ideas and strategies linked to glossy imaging and places this into context with different smooth spatial dimension suggestions, together with a whole dialogue of laser scanning. it's going to for that reason be of significant value to practitioners in quite a lot of disciplines who require spatial information and feature pointed out imaging as a device which may be used. each one bankruptcy specializes in a selected subject together with archaeology/architecture, medicine/dentistry/sports technology, forensics, landform evolution, commercial, production, engineering, biology and zoology, and gives particular examples which show the variety in size scale plausible by means of photogrammetry
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Additional resources for Applications of 3D Measurement from Images + DVD
Near-vertical aerial photographs for mapping are normally taken in a series of consecutive overlapping exposures (the overlap suiting human stereoscopic vision), providing a geometry which simplifies processing and aids consistent mapping accuracy. Historically, maps were made using large and highly specialised optical-mechanical instruments designed for stereoscopic viewing by human operators, which effectively converted image coordinates to ground coordinates in real time but using an analogue procedure.
GPS and inertial navigation systems are normally used to position the aircraft. Typical characteristics of the scanning are up to 20 scan lines every second, and up to 250 measurements on each scan line. For a flying height of 1 km, the scan width may be about 500 m, with a vertical accuracy of each individual laser measurement less than 150 mm. 19 I-Site brand laser scanner based on distance measurement. Reproduced with permission of Professor J. Fryer, University of Newcastle, New South Wales, Australia.
As is apparent when it is considered that a hyper-redundant 44 applications of 3d measurement from images network may comprise hundreds of images, the concept is only applicable in practice to fully automatic vision metrology systems. Here it proves to be a very effective means of enhancing measurement accuracy at the cost of minimal additional work in the image recording phase. 1, in a network displaying hyper redundancy, k will assume a large value of, say, 5–10 or more. 2 Network configurations for the radio telescope Photogrammetric measurement of the radio telescope had to take into account a number of network design constraints.
Applications of 3D Measurement from Images + DVD by John Fryer, Harvey Mitchell, Jim Chandler
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