We exploit an inextensibility prior as a way to better
constrain the highly ambiguous problem of non-rigid reconstruction
from monocular views. While this widely applicable prior has been used
before combined with the strong assumption of a known 3D-template, our
work achieves template-free reconstruction using only
inextensibility constraints. We show how to formulate an
energy function that includes soft inextensibility constraints and
rely on existing discrete optimisation methods to minimise it.
Our method has all of the following advantages: (i) it can be applied to two tasks that have been so far considered independently -- template based reconstruction and non-rigid structure from motion -- producing comparable or better results than the state-of-the art methods; (ii) it can perform template-free reconstruction from as few as two images; and (iii) it does not require post-processing stitching or surface smoothing.
Soft inextensibility constraints for template-free non-rigid reconstruction
Sara Vicente and Lourdes Agapito.
In European Conference on Computer Vision (ECCV), 2012.