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Top-down, bottom-up multivalued default reasoning for identity maintenance

Published: 27 October 2006 Publication History

Abstract

Persistent tracking systems require the capacity to track individuals by maintaining identity across visibility gaps caused by occlusion events. In traditional computer vision systems, the flow of information is typically bottom-up. The low level image processing modules take video input, perform early vision tasks such as background subtraction and object detection,and pass this information to the high level reasoning module. This paper describes the architecture of a system that uses top-down information flow to perform identity maintenance across occlusion events. This system uses the high level reasoning module to provide control feedback to the low level image processing module to perform forensic analysis of archival video and actively acquire information required to arrive at identity decisions. This functionality is in addition to traditional bottom-up reasoning about identity, employing contextual cues and appearance matching, within the multivalued default logic framework proposed in [18]. This framework, in addition to bestowing upon the system the property of nonmonotonicity, also allows for it to qualitatively encode its confidence in the identity decisions it takes.

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    cover image ACM Conferences
    VSSN '06: Proceedings of the 4th ACM international workshop on Video surveillance and sensor networks
    October 2006
    230 pages
    ISBN:1595934960
    DOI:10.1145/1178782
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    Published: 27 October 2006

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    Author Tags

    1. default logic
    2. identity maintenance
    3. nonmonotonic reasoning
    4. tracking
    5. visual surveillance

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    MM06: The 14th ACM International Conference on Multimedia 2006
    October 27, 2006
    California, Santa Barbara, USA

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