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IMPROVING INTERIOR ORIENTATION FOR ASMALL STANDARD CAMERA
Author(s) -
Warner W. S.,
Carson W. W.
Publication year - 1991
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.1477-9730.1991.tb00758.x
Subject(s) - photogrammetry , fiducial marker , orientation (vector space) , computer vision , artificial intelligence , metric (unit) , computer science , computer graphics (images) , mathematics , engineering , geometry , operations management
Interior orientation (the initial step in comparator‐based photogrammetry) requires a set of known photo co‐ordinates to act as reference points. Fiducials serve this purpose on large format, metric cameras, as do réseau targets on small format, semi‐metric cameras. Most small format cameras, however, have neither fiducials nor a réseau plate. The aim of this study was to establish fiducials in a small standard camera (Pentax 645) so that its imagery could be used for photogrammetric computations. This paper describes two methods of establishing fiducials, followed by a comparison of their stability and suitability for photogrammetric purposes.