ID | 15793 |
JaLCDOI | |
Sort Key | 6
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FullText URL | |
Author |
Mori Chuji
Hattori Susumu
Tanabe Hiroshi
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Abstract | A practical example of digital rectification of tilted photographs using a drum scanning micro densitometer and general purpose computers is depicted. The present research covers rectification of projective distorsions, occuring when the camera axis is not truly vertical, and affine distorsions due to curvature of a drum of a scanner. For this purpose, fundamental mathematical expressions were derived. And some pixel interpolation methods necessary for image reconstruction were compared experimentally. The examples revealed, however, that the film was deformed so complexly that they could not be corrected sufficiently only by affine transformation. Accuracy of rectification was checked by use of stereo aerial photographs in terms of residual y-parallaxes. The result showed residual y-parallaxes of ± 1 pixel (± 50 μm) and sometimes ± 2 pixels were observed. They seem to be caused mainly by film deformations which have not been eliminated, and their amount seems to exceed the photogrammetric tolerance.
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Publication Title |
Memoirs of the School of Engineering, Okayama University
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Published Date | 1982-03-01
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Volume | volume16
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Issue | issue1
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Publisher | 岡山大学工学部
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Publisher Alternative | School of Engineering, Okayama University
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Start Page | 47
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End Page | 64
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ISSN | 0475-0071
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NCID | AA00733903
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Content Type |
Departmental Bulletin Paper
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OAI-PMH Set |
岡山大学
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language |
English
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File Version | publisher
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NAID | |
Eprints Journal Name | mfe
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