cv.jit.erode This operation does somewhat the opposite of "dilate". This operation does somewhat the opposite of "dilate". In binary mode, a pixel will stay ON only if all of its neighbours are also on. This can be a good way to get rid of noise but will also make your shapes thinner and holes wider. In greyscale mode, a pixel will get the minimum value of its neighbours. "Greyscale" and "mode" attributes function as for cv.jit.dilate.

from the library : cv.jit Format : External Environment : jitter / max / msp freeware Max 4.x http://www.iamas.ac.jp/~jovan02/cv/download.html