1. A method of scaling an image having an original row/column resolution N O into a scaled image having a target row/column resolution N T , said method comprising the steps of: if a highest common denominator of said original row/column resolution N O and said target row/column resolution N T is equal to one, selecting a candidate original row/column resolution N O c and a candidate target row/column resolution N T c so that a common denominator k of said candidate original row/column resolution N O c and said candidate target row/column resolution N T _hu cis larger than a highest common denominator of said original row/column resolution N O and said target row/column resolution N T , providing a filter set comprising α filters, α being equal to a quotient of said candidate target row/column resolution N T- c and said common denominator k k; for at least one row/column of image elements in said image: forming, for each filter in said filter set, a filtered image element of said scaled image by filtering a set of at least one image element in said at least one row/column using said filter; and repeating said forming step up to k times over said at least one row/column to form a scaled row/column of image elements of said scaled image.