scale
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Name
scale - linear scaling of pixel values
Syntax
scale [-scale <scale>] [-offset <offset>] <input>
<output>
Description
scale scales the input image band by band, according
to the formula:
output(x,y) = scale*input(x,y) + offset
Accepts all pixel types. If the result is outside
the domain of the actual pixel type, the nearest
possible value is returned.
Options
-
-scale scale
- Default: 1.0.
-
-offset offset
- Default: 0.0.
See also
biffConvert(1)
Author
Tor Lønnestad, BLAB, Ifi, UiO
Examples
scale -scale 0.5 mona.img darkmona.img
scale -scale 0.5 -offset 100 mona.img lightmona.img
scale -scale -1.0 -offset 255.0 mona.img negmona.img
Id
$Id: scale.c,v 1.36 1997/05/27 12:36:42 svein Exp $