Using occlusions to aid position estimation for visual motion capture

Maurice Ringer, Tom Drummond, Joan Lasenby

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3 Citations (Scopus)


A new method for estimating the pose of a person in a marker-based visual motion capture system is presented. In such systems, certain markers are not detected at each time frame due to occlusion by the subject. It is proposed to estimate the person's pose subject to the constraint that non-detected markers remain occluded and that detected markers remain visible. In this paper, the complete posterior PDF for the person's pose is developed using the constraints mentioned above, as is a least squares solution for determining its maximum. It is shown that the new technique is able to correctly estimate a variety of poses in which many marker occlusions occur and in which typical motion capture systems fail.

Original languageEnglish
Title of host publicationProceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition
PublisherIEEE Computer Society
Publication statusPublished - 1 Dec 2001
Externally publishedYes
EventIEEE Conference on Computer Vision and Pattern Recognition 2001 - Kauai, United States of America
Duration: 8 Dec 200114 Dec 2001 (Proceedings)


ConferenceIEEE Conference on Computer Vision and Pattern Recognition 2001
Abbreviated titleCVPR 2001
Country/TerritoryUnited States of America
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