METHOD AND APPARATUS FOR UPDATING A BACKGROUND MODEL USED FOR BACKGROUND SUBTRACTION OF AN IMAGE

摘要

A method and apparatus are provided for updating a background model used for background removal of an image. The method includes receiving an image 220; And performing background removal using the background model 240 to classify any area 226 in the image as foreground. The background model includes a collection of background samples 248a, 248b, 248c, 248d for each pixel 228 in the image. The collection of background samples is arranged in the list of background images 242a, 242b, 242c, 242d. The method also includes replacing image content in an area 226 of the image classified as foreground with image content of a corresponding area 246 in any background image in the list; And adding an image to the list of background images by rearranging a collection of pointers (244a, 244b, 244c, 244d) each pointing to one of the background images in the list, such that one of the pointers A pointer to the image points to this image instead.