DESCRIZIONE
An object detection system is provided comprising: at least one line array camera configured to capture one or more data sets within a field of view of the line array camera using a one-dimensional array of pixels within each line array camera, each data set being a one-dimensional output from the one-dimensional array of pixels at a point in time; and a control system configured to determine when an object has moved through a field of view in response to the one or more data sets and determine whether the object is a person in response to the one or more data sets; wherein the control system is configured to determine that a person has moved through a field of view in response to at least one of variations within each data set and variations between each data set.