2. The method of claim 1 further comprising determining strong classifier parameters, the strong classifier parameters comprising the at least one color attribute used as a weak classifier and the weight.
2. The method of claim 1 further comprising determining strong classifier parameters, the strong classifier parameters comprising the at least one color attribute used as a weak classifier and the weight. 3. The method of claim 2 , wherein estimating the descriptiveness value comprises determining at least one weak classifier result and a strong classifier result that uses the at least one weak classifier result according to the weight.