V2EX non-maximum suppression

Non-maximum Suppression

定义 Definition

非极大值抑制(NMS):一种常见的后处理方法,尤其用于目标检测中,用来在多个重叠候选框(bounding boxes)里保留得分最高(局部最大)的框,并抑制/移除与其重叠度(通常用 IoU 衡量)超过阈值的其他框,从而减少重复检测结果。(在某些领域也可泛指“只保留局部峰值、抑制周围较小响应”的抑制策略。)

发音 Pronunciation (IPA)

/nn mksmm sprn/

例句 Examples

Non-maximum suppression removes duplicate boxes.
非极大值抑制会移除重复的边界框。

After the model predicts many overlapping boxes, we apply non-maximum suppression with an IoU threshold of 0.5 to keep only the best detections.
当模型预测出大量重叠框后,我们用 IoU 阈值为 0.5 的非极大值抑制来只保留最优的检测结果。

词源 Etymology

该术语由三部分构成:non-(不、非)+ maximum(最大值)+ suppression(抑制)。字面意思是“对非最大值进行抑制”,对应算法思想:在一组相互竞争(重叠或邻近)的候选中,最大响应/最高分被留,其余较小者被压制。

相关词 Related Words

文献作品 Notable Works

  • Faster R-CNN: Towards Real-Time Object Detection with Region Proposal Networks(Ren et al., 2015)中在检测流程里使用 NMS 来筛选候选框。
  • You Only Look Once: Unified, Real-Time Object Detection(Redmon et al., 2016)及其后续 YOLO 系列工作中,NMS 常作为输出框的关键后处理步骤。
  • Soft-NMS Improving Object Detection With One Line of Code(Bodla et al., 2017)以改进传统 NMS 为主题,提出 Soft-NMS。
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