1. A business intelligence system comprising: means for capturing a depth image of a scene from a top-down perspective; means for detecting a foreground object in the depth image; and means for performing data extraction and classification on the foreground object using depth information in the depth image, wherein the means for performing data extraction and classification classifies the foreground object based on the computed height and a 2D shape of the foreground object, and wherein the means for performing data extraction and classification computes a height of the foreground object based on a height of a depth camera used to capture the depth image.