A consideration on the application of compressed video communication methods to intelligent vehicle/highway systems

Discusses some of the options for compressed video communications like SMDS, ISDN, VSATs and POTS. CCTV cameras mounted along the freeway are the probes to provide 100 percent coverage of the highway in real time. The major purpose of video surveillance is monitoring traffic flow and the detection and verification of an incident in real time. This incident detection and verification in real time, will be very helpful for the law enforcing agencies, so that they can pinpoint the incident location, rescue the people with minimum time delay and restore the traffic flow to its normal. The pan, tilt and zoom function of a CCTV camera can be automatic as well as manual. The application is typical and does not require high picture quality at higher costs. The authors consider freeze frame system for video transmission at low data rates on wire/wireless due to its low cost, ease of installation and maintenance. The system transmits data or picture @ 5 fps rate dependent upon the activity in the picture with SNR greater than 30 dB at very low cost