Global-Local and Occlusion Awareness Network for Object Tracking in UAVs

Abstract

Multiobject tracking in unmanned aerial vehicle (UAV) scenes is a crucial task with numerous applications across various domains. The goal of this task is to track multiple objects such as people and vehicles over time as they move through the scene, often captured by cameras mounted on UAV. However, tracking objects in UAV scenes can be challenging due to several factors, including the scale variance of objects as they move through the scene and the frequent occlusions caused by complex scenes. To address these issues, we propose a global-local and occlusion awareness (GLOA) tracking network for UAVs. It comprises two main components: global-local awareness detector (GLA-D) and the occlusion awareness data association (OADA). The GLA-D uses our specially designed global-local awareness block to extract scale variance feature information from the input frames. It then outputs more discriminative identity information by adding identity embedding branches to the prediction head. The GLA-D is designed to better handle scale variance issues and improve object tracking accuracy. The OADA method used different metrics for high- and low-scoring detection frames was to alleviate occlusion problems in tracking scenarios. By combining these two components, the GLOA provides a more robust and effective solution for multiobject tracking in UAV scenes. Experiments on two public datasets may indicate the effectiveness of the proposed method.

Keywords

• Multiobject tracking
• occlusion awareness
• unmanned aerial vehicle (UAV)