Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"action detection"”.
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Online Spatiotemporal Action Detection and Prediction via Causal Representations
In this thesis, we focus on video action understanding problems from an online and real-time processing point of view. We start with the conversion of the traditional oine spatiotemporal action detection pipeline into an online spatiotemporal action tube detection system. An action tube is a set of …
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Spatio-temporal human action detection and instance segmentation in videos
… presents a series of models for automatic human action detection in videos and also addresses the space-time action instance segmentation problem. Both action detection and instance segmentation play vital roles in video understanding. Firstly, we propose a novel human action detection approach …
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Action detection in in-classroom firefighter training: A 360-degree video analytics service
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Design Optimizations for Action Recognition Applications
… that exist within the relatively new field of action recognition that make it difficult for the immediate use of existing models for specific applications. My work at the MIT-IBM Watson lab revolved around utilizing existing assets and optimizing performance for achieving action detection in …
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Heterogeneous Feature Fusion for Visual Recognition
… a serious challenge for visual recognition and detection. To handle the challenge of visual recognition in complicated scenarios, we believe that a single feature is not enough to distinguish web-scale visual concepts. Accordingly, this dissertation proposes to combine heterogeneous features for …
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Deep learning models for the perception of human social interactions
Social interaction perception is an important part of humans' visual experience. How- ever, little is known about the way the human brain processes visual input in order to understand social interactions. In comparison, other vision problems, such as object recognition tasks, have been studied …
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Spectroscopic signatures of isomnerization
… frequency, in modes that project along the reaction coordinate as the transition state is approached. A pattern-breaking perturbation, a K-staggering analogous to a tunneling splitting, is also found in barrier-proximal states. These concepts are demonstrated by the experimental and …
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Human-Centric Spatio-temporal Modeling and Analysis for Multimedia Data
… lighting conditions, paving the way for reliable action detection under a broad spectrum of environmental factors. Moving into the 3D realm, I introduced an Interpolation Graph Convolutional Network, a technique inspired by the foundational operations of convolutional neural networks, to …
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Automated monitoring and systemic analysis of workers' safety behavior in construction operations
… are strongly associated with workers’ unsafe actions and errors, which are affected by safety-related factors (e.g., safety program, safety culture, production pressure). Behavior measurement also turns out to be significantly correlated to safety outcomes (e.g., incident rates). To this end, …
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Action Recognition with Knowledge Transfer
… on deep neural networks has shown remarkable action recognition performance from videos. The remarkable performance is often achieved by transfer learning: training a model on a large-scale labeled dataset (source) and then fine-tuning the model on the small-scale labeled datasets (targets). …
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Recognising and localising human actions
Human action recognition in challenging video data is becoming an increasingly important research area. Given the growing number of cameras and robots pointing their lenses at humans, the need for automatic recognition of human actions arises, promising Google-style video search and automatic video …