Publication
SPHERA - A Unifying Structure from Motion Framework for Central Projection Cameras
Christiano Couto Gava; Didier Stricker
In: Proceedings of the 10th International Conference on Computer Vision Theory and Applications |. International Conference on Computer Vision Theory and Applications (VISAPP-15), 10th, March 11-14, Berlin, Germany, SCITEPRESS Digital Library, 2015.
Abstract
As multi-view reconstruction techniques evolve, they accomplish to reconstruct larger environments. This is
possible due to the availability of vast image collections of the target scenes. Within the next years it will
be necessary to account for all available sources of visual information to supply future 3D reconstruction
approaches. Accordingly, Structure from Motion (SfM) algorithms will need to handle such variety of image
sources, i.e. perspective, wide-angle or spherical images. Although SfM for perspective and spherical images
as well as catadioptric systems have already been studied, state of the art algorithms are not able to deal with
these images simultaneously. To close this gap, we developed SPHERA, a unifying SfM framework designed
for central projection cameras. It uses a sphere as underlying model, allowing single effective viewpoint vision
systems to be treated in a unified way. We validate our framework with quantitative evaluations on synthetic
spherical as well as real perspective, spherical and hybrid image datasets. Results show that SPHERA is a
powerful framework to support upcoming algorithms and applications on large scale 3D reconstruction.