Patent ID: 8224072

Claim:
A method for normalizing a feature of an object in an image, comprising a processor for performing steps of the method, comprising: extracting the feature of the object from the image, wherein the feature is displaceable within a displacement zone in the object, and wherein the feature has a location within the displacement zone; determining an associated description of the feature; and displacing the feature to a best location in the displacement zone to produce a normalized feature; searching a set of training images iteratively for the best location, wherein the searching uses a cost function; wherein the feature is F=(s, z o , Z), wherein a size of the feature is s, the location is z o , and the displacement zone is Z, and wherein the descriptor is ΔF(x, z o ), and the cost function θ(ΔF, z) measures a likelihood a descriptor at a location in a given training image matches the descriptor of the feature F at the location z o , and wherein x is the image from which the descriptor is extracted.