Papers › Location-Sensitive Visual Recognition with Cross-IOU Loss
Location-Sensitive Visual Recognition with Cross-IOU Loss
Kaiwen Duan, Lingxi Xie, Honggang Qi, Song Bai, Qingming Huang, Qi Tian
Object detection, instance segmentation, and pose estimation are popular visual recognition tasks which require localizing the object by internal or boundary landmarks. This paper summarizes these tasks as location-sensitive visual recognition and proposes a unified solution named location-sensitive network (LSNet). Based on a deep neural network as the backbone, LSNet predicts an anchor point and a set of landmarks which together define the shape of the target object. The key to optimizing the LSNet lies in the ability of fitting various scales, for which we design a novel loss function named cross-IOU loss that computes the cross-IOU of each anchor point-landmark pair to approximate the global IOU between the prediction and ground-truth. The flexibly located and accurately predicted landmarks also enable LSNet to incorporate richer contextual information for visual recognition. Evaluated on the MS-COCO dataset, LSNet set the new state-of-the-art accuracy for anchor-free object detection (a 53.5% box AP) and instance segmentation (a 40.2% mask AP), and shows promising performance in detecting multi-scale human poses. Code is available at https://github.com/Duankaiwen/LSNet
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Code
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Object Detection | COCO test-dev | LSNet (Res2Net-101+ DCN, multi-scale) | AP50 | 71.1 | #61 of 225 | Archive leaderboard | report |
| Object Detection | COCO test-dev | LSNet (Res2Net-101+ DCN, multi-scale) | AP75 | 59.2 | #61 of 225 | Archive leaderboard | report |
| Object Detection | COCO test-dev | LSNet (Res2Net-101+ DCN, multi-scale) | APL | 65.8 | #61 of 225 | Archive leaderboard | report |
| Object Detection | COCO test-dev | LSNet (Res2Net-101+ DCN, multi-scale) | APM | 56.4 | #61 of 225 | Archive leaderboard | report |
| Object Detection | COCO test-dev | LSNet (Res2Net-101+ DCN, multi-scale) | APS | 35.2 | #61 of 225 | Archive leaderboard | report |
| Object Detection | COCO test-dev | LSNet (Res2Net-101+ DCN, multi-scale) | box mAP | 53.5 | #61 of 225 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
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