Abstract: A method for counting a number of moving objects that cross at least one predefined curve in a scene comprises making detections of positions of one or more moving objects in the scene, tracking the positions of the moving objects over time based on the detections to produce one or more corresponding tracks, wherein each track is described by a time dependent probability density function, calculating, for each moving object, a success probability pi that the moving object succeeded to cross the at least one predefined curve in the scene, wherein the success probability is calculated by using the time dependent probability density function describing the track of the moving object, and calculating an expected value and a variance of a number of moving objects that crossed the at least one predefined curve by summing success probabilities pi and summing products pi(1?pi) of success and corresponding failure probabilities, respectively.

Abstract: A method for counting a number of moving objects that cross at least one predefined curve in a scene comprises making detections of positions of one or more moving objects in the scene, tracking the positions of the moving objects over time based on the detections to produce one or more corresponding tracks, wherein each track is described by a time dependent probability density function, calculating, for each moving object, a success probability pi that the moving object succeeded to cross the at least one predefined curve in the scene, wherein the success probability is calculated by using the time dependent probability density function describing the track of the moving object, and calculating an expected value and a variance of a number of moving objects that crossed the at least one predefined curve by summing success probabilities pi and summing products pi(1?pi) of success and corresponding failure probabilities, respectively.