7. The method of claim 6 , wherein said act (3). of computing a frame importance value for each of said extracted low, mid and high level features further comprises computing said importance value by one of deterministic, statistical and conditional probability means.
10. The method of claim 7 , wherein said deterministic means comprises computing said frame importance value according to the equation: 
 Σw i f i where: f 1 represent low, mid-level and high-level features; and w 1 represent weighting factors for weighting said features.