v.histogram v.histogram calculates a brightness histogram and gives a sense of contrast and median brightness of the image. v.histogram calculates a brightness histogram and gives a sense of contrast and median brightness of the image. Colour information is ignored. To perform colour histograms, use v.components to separate the colour components and then histogram them individually (or use v.hslhistogram)

from the library : softVNS Format : External Environment : jitter / max commercial Max 4.x http://homepage.mac.com/davidrokeby/softVNS.html