Abstract
Detecting the objects of interesting from aerial images captured by UAVs is one of the core modules in the UAV-based applications. However, it is very difficult to detection objects from aerial images. The reason is that the scale of objects in the aerial images captured by UAVs varies greatly and needs to meet certain real-time performance in detection. To deal with these challenges, we proposed a lightweight model named DSYolov3. We made the following improvements to the Yolov3 model: 1) multiple scale-aware decision discrimination network to detect objects in different scales, 2) a multi-scale fusion-based channel attention model to exploit the channel-wise information complementation, 3) a sparsity-based channel pruning to compress the model. Extensive experimental evaluation has demonstrated the effectiveness and efficiency of our approach. By the proposed approach, we could not only achieve better performance than most existing detectors but also ensure the models practicable on the UAVs.
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