The Robotics Institute

Carnegie Mellon Robotics Institute

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Abstract

The complete set of measurements that could ever be used by a stereo algorithm is the plenoptic function or light-field. We give a concise characterization of when the light-field of a Lambertian scene uniquely determines its shape, and, conversely, when stereo is inherently ambiguous. We show that stereo computed from the complete light-field is ambiguous if and only if the scene is radiating light of a constant intensity (and color) over an extended region.

Notes

Sponsor: US Office of Naval Research

Grant ID: N00014-00-1-0915

Associated Center(s) / Consortia: Vision and Autonomous Systems Center

Associated Lab(s) / Group(s): Human Identification at a Distance

Associated Project(s): Photometric Limits on Computer Vision and Light-fields

Text Reference

Simon Baker, Terence Sim, and Takeo Kanade, "A Characterization of Inherent Stereo Ambiguities," Proceedings of the 8th IEEE International Conference on Computer Vision (ICCV'01), July, 2001.

BibTeX Reference

@inproceedings{Baker_2001_3538,
   author = "Simon Baker and Terence Sim and Takeo Kanade",
   title = "A Characterization of Inherent Stereo Ambiguities",
   booktitle = "Proceedings of the 8th IEEE International Conference on Computer Vision (ICCV'01)",
   address = "Vancouver, British Columbia",
   month = "July",
   year = "2001",
}

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