Lens Distortion and Film Flattening: Their Effect on Small Format Photogrammetry
نویسنده
چکیده
The effects on small format photogrammetry of radial and decentering distortion, variations in focal length and film unflatness are reviewed. The results of recent experiments with these parameters are described. The experiments have concentrated on the use of small non-metric cameras and the results are analysed to indicate the magnitude of errors which can be introduced to analytical and stereoscopic photogrammetry from these sources. 1. LENS DISTORTIONS: FORMULAE The radial distortion, or, in a lens focussed at infinity can be represented by a polynomial series of odd powered terms
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