9. The method of claim 1 , wherein each visual signature is a function of one or more attributes.
9. The method of claim 1 , wherein each visual signature is a function of one or more attributes. 10. The method of claim 9 , wherein the one or more attributes include at least one of a color histogram of the respective candidate object, a geometric signature for the respective candidate object, a texture signature for the respective candidate object, a motion vector for the respective candidate object, or a feature profile associated with one or more features of the respective candidate object.