“Carved Visual Hulls for High-Accuracy Image-Based Modeling”
Conference:
Type:
Title:
- Carved Visual Hulls for High-Accuracy Image-Based Modeling
Presenter(s)/Author(s):
Abstract:
The relative accuracy of high-end laser range scanners can be as high as 1/10,000, allowing the construction of high-accuracy solid models of complex shapes from registered depth maps [Levoy et al. 2000]. Comparable accuracy levels can be achieved using “ordinary” cameras and sophisticated photogrammetric methods, but these typically output a relatively sparse set of points and re- quire markers [Uffenkamp 1993]. Computer vision approaches to image-based modeling from calibrated photographs construct solid object models and do not need markers [Baumgart 1974; Kutulakos and Seitz 2000], but their relative accuracy is typically be- low 1/200. [Hernandez and Schmitt 2004] propose to use the visual hull [Baumgart 1974] to initialize the deformation of a surface mesh under the influence of rim- and photo-consistency constraints expressed by gradient flow forces (see [Keriven 2002] for a related approach). Although this method yields excellent results, its re-liance on iterative refinement makes it susceptible to local minima.
References:
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Acknowledgements:
This research was partially supported by the National Science Foundation under grant IIS-0312438.
