Abstract

We propose an algorithm of image coding which is invariant to scale transformation due to a method of scale weighting function (SWF) described below. So it could be a base for an algorithm of pattern recognition. We get an image code at the output—a set of 60 numbers which are independent on the image size. Let's describe the algorithm briefly. An input image I(x,y) is processed in some channels which have identical organization and different scales forming logarithmic series with the step 1/2 octave. Processing of an image in K-th channel includes two steps: (a, b). Then using SWF method the image code is built in two steps: (c, d).

© 1994 IEEE