METHOD FOR TRANSFORMING AN IMAGE DESCRIPTOR BASED ON A GRADIENT HISTOGRAM AND RELATIVE IMAGE PROCESSING APPARATUS

摘要

It is described a method for transforming an image descriptor, based on a gradient histogram (h) comprising a plurality of histogram bins(hi),into a transformed gradient histogram descriptor (v) comprising a set of values (vj), wherein it is provided the step of applying at least one criterium for calculating said set of values (vj), said at least one criterium comprising a location criterium of said histogram bins(hi).The invention also relates to an image processing device suitable for carrying out the method.