DroneNet: Crowd Density Estimation using Self-ONNs for Drones
This work addresses efficient crowd monitoring for drone-based surveillance, but it is incremental as it applies a known method (Self-ONNs) to a specific domain.
The paper tackles crowd density estimation from drone videos by proposing DroneNet, which uses Self-ONNs to achieve lower computational complexity and superior performance compared to an equivalent CNN-based model on two public datasets.
Video surveillance using drones is both convenient and efficient due to the ease of deployment and unobstructed movement of drones in many scenarios. An interesting application of drone-based video surveillance is to estimate crowd densities (both pedestrians and vehicles) in public places. Deep learning using convolution neural networks (CNNs) is employed for automatic crowd counting and density estimation using images and videos. However, the performance and accuracy of such models typically depend upon the model architecture i.e., deeper CNN models improve accuracy at the cost of increased inference time. In this paper, we propose a novel crowd density estimation model for drones (DroneNet) using Self-organized Operational Neural Networks (Self-ONN). Self-ONN provides efficient learning capabilities with lower computational complexity as compared to CNN-based models. We tested our algorithm on two drone-view public datasets. Our evaluation shows that the proposed DroneNet shows superior performance on an equivalent CNN-based model.