30 October 2009 Auto-extracting vertical lines from aerial images over urban areas
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Proceedings Volume 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis; 74954Z (2009) https://doi.org/10.1117/12.832819
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China
Abstract
In order to make use of the vertical lines to the application the aerial triangulation over urban areas, the problem of the auto extracting vertical lines from the large-scale aerial images must be solved at first. In this paper, according to the analysis of the characteristics of the vertical lines in the urban aerial images, some digital image process and line extracting and grouping arithmetic have been assembled together to form an effective auto extracting vertical lines arithmetic. The arithmetic pre-process the aerial images before the line extracting firstly, and then calculate the approximate nadir point position by means of Hough transformation and the vertical lines are also extracted from the auto-extracted lines at the same time, at last a least square template matching with nadir constraints has been used to improve the accuracy of the vertical lines and the intersection accuracy of the nadir point.
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Yong Zhang, Jianqing Zhang, Zuxun Zhang, "Auto-extracting vertical lines from aerial images over urban areas", Proc. SPIE 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis, 74954Z (30 October 2009); doi: 10.1117/12.832819; https://doi.org/10.1117/12.832819
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