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|a 10.1109/TPAMI.2023.3326538
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|a eng
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1 |
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|a Gu, Daxin
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Reliable Event Generation With Invertible Conditional Normalizing Flow
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Event streams provide a novel paradigm to describe visual scenes by capturing intensity variations above specific thresholds along with various types of noise. Existing event generation methods usually rely on one-way mappings using hand-crafted parameters and noise rates, which may not adequately suit diverse scenarios and event cameras. To address this limitation, we propose a novel approach to learn a bidirectional mapping between the feature space of event streams and their inherent parameters, enabling the generation of reliable event streams with enhanced generalization capabilities. We first randomly generate a vast number of parameters and synthesize massive event streams using an event simulator. Subsequently, an event-based normalizing flow network is proposed to learn the invertible mapping between the representation of a synthetic event stream and its parameters. The invertible mapping is implemented by incorporating an intensity-guided conditional affine simulation mechanism, facilitating better alignment between event features and parameter spaces. Additionally, we impose constraints on event sparsity, edge distribution, and noise distribution through novel event losses, further emphasizing event priors in the bidirectional mapping. Our framework surpasses state-of-the-art methods in video reconstruction, optical flow estimation, and parameter estimation tasks on synthetic and real-world datasets, exhibiting excellent generalization across diverse scenes and cameras
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|a Journal Article
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| 700 |
1 |
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|a Li, Jia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Lin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ren, Jimmy S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on pattern analysis and machine intelligence
|d 1979
|g 46(2024), 2 vom: 09. Jan., Seite 927-943
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|x 1939-3539
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|g volume:46
|g year:2024
|g number:2
|g day:09
|g month:01
|g pages:927-943
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|u http://dx.doi.org/10.1109/TPAMI.2023.3326538
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