Patent ID: 8086017

Claim:
A method of creating a classifier for media validation said method comprising the steps of: (i) accessing a training set of images of media items of a predetermined type; (ii) creating a plurality of segmentation maps using the training set images, each segmentation map including information about relationships of corresponding image elements between all images in the training set and each segmentation map having a different number of segments than any other segmentation map; (iii) for each segmentation map, calculating a set of classification parameters by segmenting each of the training set images using that segmentation map and extracting one or more features from each segment in each of the training set images; (iv) forming a classifier using a first selected one of the sets of classification parameters corresponding to a first segmentation map containing a first number of segments; and (v) replacing the first set of classification parameters by a second set of classification parameters corresponding to a second segmentation map containing a second number of segments greater than the first number of segments without retraining the classifier when use of the first set of classification parameters to validate media items of unknown validity by the classifier results in a false accept rate above a predetermined threshold.