A video based system and method for detecting and counting persons traversing an area being monitored is provided. The method includes the steps of initialization of at least one end unit forming part of a video imaging system, the end unit having at least one camera installed therein, the camera producing...http://www.google.com.mx/patents/US6697104?utm_source=gb-gplus-sharePatent US6697104 - Video based system and method for detecting and counting persons traversing an area being monitored
