HM-Net: A Regression Network for Object Center Detection and Tracking on Wide Area Motion Imagery

• URL: http://arxiv.org/abs/2110.09881v1
• Date: Tue, 19 Oct 2021 11:56:30 GMT
• Title: HM-Net: A Regression Network for Object Center Detection and Tracking on Wide Area Motion Imagery
• Authors: Hakki Motorcu, Hasan F. Ates, H. Fatih Ugurdag, and Bahadir Gunturk
• Abstract summary: We present our deep neural network-based combined object detection and tracking model, namely, Heat Map Network (HM-Net) HM-Net is significantly faster than state-of-the-art frame differencing and background subtraction-based methods. It outperforms state-of-the-art WAMI moving object detection and tracking methods on WPAFB dataset.
• Score: 1.2249546377051437
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Wide Area Motion Imagery (WAMI) yields high resolution images with a large number of extremely small objects. Target objects have large spatial displacements throughout consecutive frames. This nature of WAMI images makes object tracking and detection challenging. In this paper, we present our deep neural network-based combined object detection and tracking model, namely, Heat Map Network (HM-Net). HM-Net is significantly faster than state-of-the-art frame differencing and background subtraction-based methods, without compromising detection and tracking performances. HM-Net follows object center-based joint detection and tracking paradigm. Simple heat map-based predictions support unlimited number of simultaneous detections. The proposed method uses two consecutive frames and the object detection heat map obtained from the previous frame as input, which helps HM-Net monitor spatio-temporal changes between frames and keeps track of previously predicted objects. Although reuse of prior object detection heat map acts as a vital feedback-based memory element, it can lead to unintended surge of false positive detections. To increase robustness of the method against false positives and to eliminate low confidence detections, HM-Net employs novel feedback filters and advanced data augmentations. HM-Net outperforms state-of-the-art WAMI moving object detection and tracking methods on WPAFB dataset with its 96.2% F1 and 94.4% mAP detection scores, while achieving a 61.8% mAP tracking score on the same dataset.

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