Deep object detection for waterbird monitoring using aerial imagery
This work addresses the time-consuming task of monitoring waterbird populations for conservation management, but it is incremental as it applies existing object detection methods to a new domain-specific dataset.
The paper tackled the problem of manually counting waterbirds from aerial drone imagery by developing a deep learning pipeline for detection and counting, achieving mean interpolated average precision scores of 67.9% and 63.1% with Faster R-CNN and RetinaNet respectively.
Monitoring of colonial waterbird nesting islands is essential to tracking waterbird population trends, which are used for evaluating ecosystem health and informing conservation management decisions. Recently, unmanned aerial vehicles, or drones, have emerged as a viable technology to precisely monitor waterbird colonies. However, manually counting waterbirds from hundreds, or potentially thousands, of aerial images is both difficult and time-consuming. In this work, we present a deep learning pipeline that can be used to precisely detect, count, and monitor waterbirds using aerial imagery collected by a commercial drone. By utilizing convolutional neural network-based object detectors, we show that we can detect 16 classes of waterbird species that are commonly found in colonial nesting islands along the Texas coast. Our experiments using Faster R-CNN and RetinaNet object detectors give mean interpolated average precision scores of 67.9% and 63.1% respectively.