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| Multi-constraint Deep Distance Learning for Visual Loop Closure Detection |
| CHEN Liang1, JIN Sheng1, YANG Hui1, GAO Yu1, SUN Rongchuan1, SUN Lining1 |
| 1. School of Mechanical and Electric Engineering, Soochow University, Suzhou 215137 |
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Abstract In visual loop closure detection under strong scene changes, the feature descriptors extracted by the existing deep learning methods cannot be distinguished well. Aiming at this problem, the multi-constraint distance relationship is analyzed, and a multi-constraint deep distance learning method for visual loop closure detection is proposed. Firstly, the original images are mapped to feature descriptors by any convolutional neural network in the low-dimensional feature space. Then, a multi-constraint loss function is proposed to constrain the distance relationships among feature descriptors, and a multi-constraint training sample set is automatically constructed online to extract more discriminative low-dimensional feature descriptors. Experiments on New College and TUM datasets show that the proposed method improves the performance of loop closure detection under strong scene changes.
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Received: 13 February 2020
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| Fund:Supported by National Natural Science Foundation of China(No.61673288) |
| About author:: (CHEN Liang(Corresponding author), Ph.D., associate professor. His research interests include deep learning.);(JIN Sheng, master student. His research interests include visual loop closure detection.);(YANG Hui, master student. Her research interests include visual loop closure detection.);(GAO Yu, Ph.D., lecturer. His research interests include robotic visual perception.);(SUN Rongchuan, Ph.D., associate profe-ssor. His research interests include visual SLAM.);(SUN Lining, Ph.D., professor. His research interests include advanced robotic technologies.) |
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2020, Vol. 33 
