Optimized 3D coordinate reconstruction from paired stereographs using a calibrated phantom.

C F Small; J T Bryant

doi:10.1016/0141-5425(93)90050-9

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PubMed · 8459699

Optimized 3D coordinate reconstruction from paired stereographs using a calibrated phantom.

C F Small·J T Bryant

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Abstract

A refinement to a previously described three-dimensional reconstruction algorithm based on point identification in calibrated non-orthogonal radiograms (stereo-pairs) is described. The modification involves a computation of the focal point magnitude of the point in three dimensions, analogous to focusing in two dimensions, as well as the most likely location of the target point in 3-space; the focal point magnitude may be thought of as the precision of the point identification. Multiple observer studies of the same stereopair can be used to estimate three-dimensional reconstruction accuracy by providing an average location and a mean distance from average. Both measures are useful parameters for initial selection of bone landmark references and for error propagation studies.

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Algorithms Calibration Image Processing, Computer-Assisted Models, Structural Observer Variation Radiography Software Design Journal Article Research Support, Non-U.S. Gov't

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C F Small, J T Bryant. 1993. Optimized 3D coordinate reconstruction from paired stereographs using a calibrated phantom.. https://doi.org/10.1016/0141-5425(93)90050-9

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