The gamma transform [2] is a pixel transform in
which the input and output pixels are related by the formula:
where x is a pixel value in the range [0,1].
For 
in (0,1] the output image is darker than the input image
whereas for 
greater than one the
output image is brighter. In Figure 3 the gamma value 3.3 is
applied to the original image (left).
The Gamma value is supplied in the corresponding text field. By
pressing the ``return'' key the operation of the applet will
commence.
Figure 3: The Gamma Correction Applet