  Vehicle detection and tracking applications play an important role for
civilian and military applications such as in highway traffic surveillance
control, management and urban traffic planning. Vehicle detection process on
road are used for vehicle tracking, counts, average speed of each individual
vehicle, traffic analysis and vehicle categorizing objectives and may be
implemented under different environments changes. In this review, we present a
concise overview of image processing methods and analysis tools which used in
building these previous mentioned applications that involved developing traffic
surveillance systems. More precisely and in contrast with other reviews, we
classified the processing methods under three categories for more clarification
to explain the traffic systems.
