Visual data collected from Unmanned Aerial Vehicles (UAVs) has opened a new
frontier of computer vision that requires automated analysis of aerial
images/videos. However, the existing UAV datasets primarily focus on object
detection. An object detector does not differentiate between the moving and
non-moving objects. Given a real-time UAV video stream, how can we both
localize and classify the moving objects, i.e. perform moving object
recognition (MOR)? The MOR is one of the essential tasks to support various UAV
vision-based applications including aerial surveillance, search and rescue,
event recognition, urban and rural scene understanding.To the best of our
knowledge, no labeled dataset is available for MOR evaluation in UAV videos.
Therefore, in this paper, we introduce MOR-UAV, a large-scale video dataset for
MOR in aerial videos. We achieve this by labeling axis-aligned bounding boxes
for moving objects which requires less computational resources than producing
pixel-level estimates. We annotate 89,783 moving object instances collected
from 30 UAV videos, consisting of 10,948 frames in various scenarios such as
weather conditions, occlusion, changing flying altitude and multiple camera
views. We assigned the labels for two categories of vehicles (car and heavy
vehicle). Furthermore, we propose a deep unified framework MOR-UAVNet for MOR
in UAV videos. Since, this is a first attempt for MOR in UAV videos, we present
16 baseline results based on the proposed framework over the MOR-UAV dataset
through quantitative and qualitative experiments. We also analyze the
motion-salient regions in the network through multiple layer visualizations.
The MOR-UAVNet works online at inference as it requires only few past frames.
Moreover, it doesn't require predefined target initialization from user.
Experiments also demonstrate that the MOR-UAV dataset is quite challenging.

介绍了 MOR-UAV 数据集和 MOR-UAVNet 框架，该框架可以实现对 UAV 视频中的移动物体进行识别、分类和定位，无需预定义目标初始化，并针对 MOR-UAV 数据集进行了定量和定性实验。