square
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Name
square - take the square of each pixel value
Syntax
square [-s <scale>] <input> <output>
Description
square squares the input image band by band,
according to the formula:
output(x,y) = input(x,y) * input(x,y) * scale
Accepts all pixel types. If the result is outside
the domain of the actual pixel type, the nearest
possible value is returned. Output image will have
the same pixel type as input.
Options
-
-s scale
- Default: 1.0
See also
square(3), squareRoot(1), phase(1), power(1), absValue(1),
imag(1), real(1), scale(1), multiply(1), divide(1),
biffConvert(1)
Author
Tor Lønnestad, BLAB, Ifi, UiO
Examples
square mona.img sqmona.img
square -scale 0.05 mona.img sqmona.img
Id
$Id: square.c,v 1.30 1997/05/27 14:46:25 svein Exp $