Architectural Reconstruction from Single or Multiple Uncalibrated Images

In this paper we present a system for the reconstruction of 3 D mod els of architectural scenes from single or multiple uncalibrated images. T he partial 3 D mod el of a build ing is recovered from a single image using geometric constraints such as parallelism and orthogonality, which are likely to be found in most architectural scenes. T he approximate corner positions of a build ing are selected interactively by a user and then further refi ned automatically using H ough transform. T he relative d epths of the corner points are calculated accord ing to the perspective projection mod el. P artial 3 D mod els recovered from d iff erent viewpoints are registered to a common coord inate system for integration. T he integrated 3 D mod el is then fi tted with piecewise planar surfaces to generate a more geometrically consistent mod el. T he acquired images are fi nally mapped onto the surface of the reconstructed 3 D mod el to create a photo-realistic mod el. A working system which allows a user to interactively build a 3 D mod el of an architectural scene from single or multiple images has been proposed and implemented .