how to make a Clipping of an image in Julia
When you have a grayscale image, it is quantized to one byte.
(I would like to do it with a color image such as the mandrill)
That means that only 255 bts can be quantified and can not be exceeded or have negative values.
Clipping = set limits of the quantification between 0 and 255
yes x <0 yes x> 255
x == 0 x == 255