Patent Document ID: 20060170980
Application ID: 11344480
Patent Status: 0

Claim One:
1. A method of designing filters for filtering digitized images comprising the steps of: providing a digitized training image f(x) comprising a plurality of intensities corresponding to a domain of points on a n-dimensional grid; constructing a set of difference-of-Gaussian (DoG) filters {h i (x)} whose frequency responses partition a frequency space u; forming a linear combination of said DoG filters h(x)=Σc i h i (x), to form a trial filter, said trial filter being associated with a set of linear combination coefficients {c i } that weight the contribution of each DoG filter to the trial filter; convolving said trial filter with said training image to obtain a trial image f t (x); and summing a square difference |f t (x)−f i (x)| 2 of said trial image and a target image f i (x), wherein if said sum is a minimum, outputting said trial filter as a final filter.