Bottom and concave surface rendering in image-based visual hull

Authors:
Jie Feng;Bencong Song;Bingfeng Zhou
Affiliations:
Peking University, China;Peking University, China;Peking University, China
Venue:
VRCAI '08 Proceedings of The 7th ACM SIGGRAPH International Conference on Virtual-Reality Continuum and Its Applications in Industry
Year:
2008

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Abstract

Bottom and concave shapes on object surface are difficult to reconstruct in image-based visual hull method. In this paper, we propose a simple but efficient method to solve these problems in regular image-based visual hull framework. With the help of a simple image acquiring platform which involves a glass and a mirror, we can capture images of the object from both upper and lower side at the same time. Using these images, silhouette cones necessary for reconstructing the bottom and the concave surfaces could be generated. Therefore the final rendering result of the object could be significantly improved in accuracy and reality, especially in the parts of bottom and concaves.