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We present a scalable approach to recognizing and describing complex activities in video sequences. We are interested in long-term, sequential activities that may have several parallel streams of action. Our approach integrates temporal, contextual and ordering constraints with output from low-level visual detectors to recognize complex, long-term(More)
The access control provided by a physical lock is based on the assumption that the information content of the corresponding key is private --- that duplication should require either possession of the key or a priori knowledge of how it was cut. However, the ever-increasing capabilities and prevalence of digital imaging technologies present a fundamental(More)
Researchers around the world have focused on autonomous agriculture with systems encompassing greenhouse, orchard, field, and other applications. Research has shown the potential and ability of the technology to allow a vehicle or selection of vehicles to follow a specified task. In this study, one aspect of the problem, that of operating a tractor−cart(More)
Automatic human motion capture is an important and significant problem in the computer vision community. A successful system may have many applications including inexpensive motion capture and analysis in unconstrained environments, human-computer interfaces, and automatic surveillance systems. This work focuses on an important sub-problem in computer(More)
This work presents a parts-based person detection framework. The individual body segments-legs, torsos, and heads-are detected by Adaboost classifiers, which have proven useful other classification tasks [12] [6] [1] [13]. The body segment candidates are combined into kinematically plausible configurations and each is assigned a score. The body(More)
Researchers around the world have focused on autonomous agriculture, with systems encompassing greenhouse, orchard, field and other applications. Research has shown the potential and ability of the technology to allow a vehicle or selection of vehicles to follow a specified task. In this study, one aspect of the problem, that of operating a tractor-cart(More)
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