Patent ID: 7058205
Filing Date: 2006-06-06
Classification: G06K,G06T

Abstract:
1. A method for generating an appearance model utilizing image data provided in a plurality of sequential image frames, the appearance model defined by a stable component including a first mixing probability and a first data parameter that is calculated using a plurality of image data values respectively provided in a relatively large number of said sequential image frames, the relatively large number being greater than three, the appearance model also including a transient component having a second mixing probability and second data parameter that is calculated using a plurality of image data values respectively provided in a relatively small number of said sequential image frames, wherein the method comprises: receiving an image datum corresponding to a most current image frame of the plurality of sequential image frames; determining a first likelihood value for the stable component and a second likelihood value for the transient component, the first likelihood value indicating a relative consistency between the image datum and the first data parameter, and the second likelihood value indicating a relative consistency between the image datum and the second data parameter; and updating the first mixing probability of the stable component and the second mixing probability of the transient component using the first and second likelihood values, respectively.