README for GrayscaleDemo

Just type or click GrayscaleDemo
This opens a file open dialog to select a 16-bit tiff file. If no file is selected (by clicking cancel)
or if the file selected could not be opened/was not valid a grayscale gradient image in drawn instead
Some sample tiff images can be found in the main GrayscaleDemo dir.

INTERACTION
-Mouse
Left click and drag : To pan the image

-Keys
L: to toggle 12-bit and 8-bit rendering
The Arrow keys implement Scale and Bias into the lookup table for windowing/leveling functions
Up/Down Arrow  : Scale up and down the lookup table resply
Left/Right Arrow : Increase/Decrease Offset resply
R : Resets eveything to default
