Abstract
For many applications (e.g., surveillance and disaster response), situational awareness is essential. In these applications, human body posture recognition in real time plays a crucial role for corresponding response. Traditional posture recognition suffers from accuracy, due to the low robustness against uncertainty. Those uncertainties include variation from the environment (e.g., viewpoint, illumination and occlusion) and the postures (e.g., ambiguous posture and the overlap of multiple people). This paper proposed a drone surveillance system to distinguish human behaviors among violent, normal and help needed based on deep learning approach under the influence of those uncertainties. First, the real-time pose estimation is performed by the OpenPose network, and then the DeepSort algorithm is applied for tracking multi-person. The deep neural network model (YOLO) is trained to recognize each person’s postures based on a single frame of joints obtained from OpenPose. Finally, the fuzzy logic is applied to interpret those postures. The trained deep learning model is evaluated via the metrics (accuracy, precision, recall, P-R curve and F1 score). The empirical results show the proposed drone surveillance system can effectively recognize the targeted human behaviors with strong robustness in the presence of uncertainty and operated efficiently with high real-time performance.