Abstract

This paper describes an interactive system for creating ge- ometric models from many uncalibrated images of architectural scenes. In this context, we must solve the structure from motion problem given only few and noisy feature correspondences in non-sequential views. By exploiting the strong constraints obtained by modelling a map as a sin- gle affine view of the scene, we are able to compute all 3D points and camera positions simultaneously as the solution of a set of linear equa- tions. Reconstruction is achieved without making restrictive assumptions about the scene (such as that reference points or planes are visible in all views). We have implemented a practical interactive system, which has been used to make large-scale models of a variety of architectural scenes. We present quantitative and qualitative results obtained by this system.