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• W3148566359 abstract "Recent advances in label assignment in object detection mainly seek to independently define positive/negative training samples for each ground-truth (gt) object. In this paper, we innovatively revisit the label assignment from a global perspective and propose to formulate the assigning procedure as an Optimal Transport (OT) problem -- a well-studied topic in Optimization Theory. Concretely, we define the unit transportation cost between each demander (anchor) and supplier (gt) pair as the weighted summation of their classification and regression losses. After formulation, finding the best assignment solution is converted to solve the optimal transport plan at minimal transportation costs, which can be solved via Sinkhorn-Knopp Iteration. On COCO, a single FCOS-ResNet-50 detector equipped with Optimal Transport Assignment (OTA) can reach 40.7% mAP under 1X scheduler, outperforming all other existing assigning methods. Extensive experiments conducted on COCO and CrowdHuman further validate the effectiveness of our proposed OTA, especially its superiority in crowd scenarios. The code is available at https://github.com/Megvii-BaseDetection/OTA." @default.
• W3148566359 created "2021-04-13" @default.
• W3148566359 creator A5047586627 @default.
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• W3148566359 date "2021-03-26" @default.
• W3148566359 modified "2023-09-23" @default.
• W3148566359 title "OTA: Optimal Transport Assignment for Object Detection" @default.
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• W3148566359 doi "https://doi.org/10.48550/arxiv.2103.14259" @default.
• W3148566359 hasPublicationYear "2021" @default.
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