| From: | Jonathan |
| Date: | 01 Dec 99 at 23:02:08 |
| Subject: | Re: Little maths problem |
From: "Jonathan" <jadamcze@utas.edu.au>
| From: "Alastair M. Robinson" <blackfive@fakenhamweb.co.uk>
| You might also want to experiment with the gamma function (as found in
your
| favourite image processing program):
|
| f=exp(gamma*(log(f)-log(500000.0)));
|
| If gamma is set to 1.0, you'll get a linear transfer. Set it lower than
1.0
| to bias in the direction you want, and higher than 1.0 to bias in the
other
| direction.
|
How does gamma work? (never seen it before)
Jonathan.