Requirements of an automated system, for analysing video traffic scenes, for behavioural studies of road users are defined. Design guidelines are established for building such a system based on operational requirements and a literature survey. The purpose of the literature survey was to find applicable systems or techniques that have already demonstrated the ability to extract the necessary data for road user behavioural studies. No systems were found that could extract all of the necessary data. However, two possible approaches and their associated techniques were found. The two possible approaches are discussed relative to the problems encountered when observing typical traffic scenes. The "General approach" attempts to build a system that automatically interprets any real world traffic scene. "Specific approaches" are the second class of solutions, these approaches address problems encountered when gathering traffic data using video techniques. The current state of development, strengths, and weaknesses of both types of system designs are discussed. Specific functions necessary for an automated system are outlined. Based on the results of the survey, recommendations are made for developing a preliminary system during the next phase of an ongoing effort. (A)
Abstract