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Visibility Analysis In Vision Metrology Network Design
Author(s) -
Saadatseresht Mohammad,
Fraser Clive S.,
Samadzadegan Farhad,
Azizi Ali
Publication year - 2004
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/j.0031-868x.2004.00280.x
Subject(s) - visibility , computer science , photogrammetry , artificial intelligence , computer vision , metrology , range (aeronautics) , engineering , geography , mathematics , statistics , aerospace engineering , meteorology
The aim of this paper is to present a method whereby accuracy enhancement of an existing photogrammetric network is achieved through the automatic selection of additional camera stations. The determination of the positions of these ‘‘accuracy fulfilment’’ camera stations is based upon what has been termed ‘‘visibility uncertainty prediction modelling’’ of visibility constraints derived from the existing network geometry. Following a review of vision constraints in network design, the concepts of visibility uncertainty prediction and visibility uncertainty spheres are introduced. These provide a mechanism to predict the visibility of current object target points for the new accuracy fulfilment images. This in turn aids in network design improvement. The visibility uncertainty modelling is then illustrated for two close range photogrammetric network configurations, for which the test results demonstrate that the proposed model can reliably predict target visibility with an overall certainty of 75%.