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|a 10.1109/TIP.2024.3490894
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|a eng
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1 |
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|a Li, Jingtao
|e verfasserin
|4 aut
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| 245 |
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|a Learning a Cross-Modality Anomaly Detector for Remote Sensing Imagery
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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 03.03.2025
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Remote sensing anomaly detector can find the objects deviating from the background as potential targets for Earth monitoring. Given the diversity in earth anomaly types, designing a transferring model with cross-modality detection ability should be cost-effective and flexible to new earth observation sources and anomaly types. However, the current anomaly detectors aim to learn the certain background distribution, the trained model cannot be transferred to unseen images. Inspired by the fact that the deviation metric for score ranking is consistent and independent from the image distribution, this study exploits the learning target conversion from the varying background distribution to the consistent deviation metric. We theoretically prove that the large-margin condition in labeled samples ensures the transferring ability of learned deviation metric. To satisfy this condition, two large margin losses for pixel-level and feature-level deviation ranking are proposed respectively. Since the real anomalies are difficult to acquire, anomaly simulation strategies are designed to compute the model loss. With the large-margin learning for deviation metric, the trained model achieves cross-modality detection ability in five modalities-hyperspectral, visible light, synthetic aperture radar (SAR), infrared and low-light-in zero-shot manner
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|a Journal Article
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1 |
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|a Wang, Xinyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Hengwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhong, Yanfei
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
|d 1992
|g 33(2024) vom: 08., Seite 6607-6621
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|x 1941-0042
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|g volume:33
|g year:2024
|g day:08
|g pages:6607-6621
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|u http://dx.doi.org/10.1109/TIP.2024.3490894
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