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Open AccessProceedings ArticleDOI

Soft-NMS — Improving Object Detection with One Line of Code

TLDR
Soft-NMS as mentioned in this paper decays the detection scores of all other objects as a continuous function of their overlap with M. As per the design of the algorithm, if an object lies within the predefined overlap threshold, it leads to a miss.
Abstract
Non-maximum suppression is an integral part of the object detection pipeline. First, it sorts all detection boxes on the basis of their scores. The detection box M with the maximum score is selected and all other detection boxes with a significant overlap (using a pre-defined threshold) with M are suppressed. This process is recursively applied on the remaining boxes. As per the design of the algorithm, if an object lies within the predefined overlap threshold, it leads to a miss. To this end, we propose Soft-NMS, an algorithm which decays the detection scores of all other objects as a continuous function of their overlap with M. Hence, no object is eliminated in this process. Soft-NMS obtains consistent improvements for the coco-style mAP metric on standard datasets like PASCAL VOC2007 (1.7% for both R-FCN and Faster-RCNN) and MS-COCO (1.3% for R-FCN and 1.1% for Faster-RCNN) by just changing the NMS algorithm without any additional hyper-parameters. Using Deformable-RFCN, Soft-NMS improves state-of-the-art in object detection from 39.8% to 40.9% with a single model. Further, the computational complexity of Soft-NMS is the same as traditional NMS and hence it can be efficiently implemented. Since Soft-NMS does not require any extra training and is simple to implement, it can be easily integrated into any object detection pipeline. Code for Soft-NMS is publicly available on GitHub http://bit.ly/2nJLNMu.

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Citations
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Journal ArticleDOI

Cross-frame keypoint-based and spatial motion information-guided networks for moving vehicle detection and tracking in satellite videos

TL;DR: A novel deep learning framework is proposed for moving vehicle detection and tracking in the satellite videos comprised of the cross-frame keypoint-based detection network (CKDNet) and spatial motion information-guided tracking network (SMTNet).
Journal ArticleDOI

Attribute-Aware Pedestrian Detection in a Crowd

TL;DR: Zhang et al. as mentioned in this paper proposed an attribute-aware pedestrian detector to explicitly model people's semantic attributes in a high-level feature detection fashion, which achieved state-of-the-art performance on three benchmark datasets including CityPerson, CrowdHuman and EuroCityPerson.
Journal ArticleDOI

Confidence Score: The Forgotten Dimension of Object Detection Performance Evaluation

TL;DR: A method to find the optimum performance point of a model as a basis for fairer comparison and deeper insights into the trade-offs caused by selecting a confidence score threshold is proposed.
Proceedings ArticleDOI

PS-RCNN: Detecting Secondary Human Instances in a Crowd via Primary Object Suppression

TL;DR: This work introduces a variant of two-stage detectors called PS-RCNN, which significantly improves recall and AP on CrowdHuman and Widerperson, and introduces a High Resolution RoI Align module to retain as much of fine-grained features of visible parts of the heavily occluded humans as possible.
Journal ArticleDOI

SKNet: Detecting Rotated Ships as Keypoints in Optical Remote Sensing Images

TL;DR: Two customized modules are designed: orthogonal pooling and soft-rotate-nonmaximum suppression (NMS), where the former is to improve the prediction accuracy of the center keypoint and the morphological size, and the latter is to effectively remove redundant rotated ship detection results.
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