v.squareroot v.squareroot outputs a brightness v.squareroot outputs a brightness calculated as: square-root( input brightness ) * 16 * gain. This is a floating point calculation. It can operate on int8, int32 and float32 images in all formats. This will tend to brighten dark areas of the image, while keeping the brightest areas from washing out much. It is a bit like setting a low video gamma. This is a floating point calculation. It can operate on int8, int32 and float32 images in all formats.

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