3DLine Segments Reconstruction for Building Facades with Line Matching Across Multi-Image with Non-Geometry Constraint
Zhang Linya · Xi'an Jiaotong Daxue xuebao · 2014
The previous works on 3Dline segment reconstruction of building facades require known geometrical constraints in multi-image line matching,and the line segment reconstruction is affected by accumulated input error.An improved algorithm with non-geometry constraint is proposed.In line matching across multi-image,robust two-view line matching method is chosen, line-point invariants are taken as the foundation and matched-line-segment sets are formed via transitivity of matched line segments.Incompatible matches are eliminated and compatible matches are merged from those sets to form an accurate result.For this line segments reconstruction,3Dline segments corresponding to each matched-line-segment set are obtained in piecewise,and the length constraint and angle constraint are considered to remove the line segments which do not constitute building facades.The whole structure of building facades is thus effectively reconstructed with this algorithm.