The ground stationary measurement devices are barely able to handle the daily traffic volumes and thus there is a high chance they could fail in situations arising from catastrophes or traffic disasters. Therefore, a real-time airborne monitoring system for such unforeseen circumstances was developed in the last years at the German Aerospace Center (DLR). This system has the capacity to estimate road traffic information such as vehicle positions and vehicle velocities by tracking through image sequences. This book focuses on developing a robust and feasible algorithm for automatic estimation...