Method and System For Touch Shape Recognition, Related Screen Apparatus and Computer Program Product

A method of recognizing finger detection data in a detection data map produced by a touch screen includes converting the data from the x, y, z space into a three-descriptor space including:- a first coordinate (num Peaks) representative of the number of intensity peaks in the map,- a second coordinate (maxAP) representative of the number of nodes (i.e. pixels) absorbed under the intensity peaks.A third coordinate (delta) may be selected as the angular coefficient or slope of a piecewise-linear approximating function passing through points having the numbers of nodes absorbed under the intensity peaks ordered in decreasing order over said intensity peaks, which permits to single out finger data with respect to non-finger data over the whole of the touch screen. The third coordinate may be also selected as an adjacency value representative of the extent the intensity peaks are adjacent to one another, which permits to single out finger data produced over a portion of the touch screen with respect to non-finger data produced over another portion of the touch screen.