Description: ADJGAMMA- Adjusts image gamma.
function g = adjgamma(im, g)
Arguments:
im - image to be processed.
g - image gamma value.
Values in the range 0-1 enhance contrast of bright
regions, values > 1 enhance contrast in dark
regions.
Peter Kovesi
School of Computer Science & Software Engineering
The University of Western Australia
pk @ csse uwa edu au
http://www.cs.uwa.edu.au/~pk
July 2001
function newim = adjgamma(im, g)
if g <= 0
error( Gamma value must be > 0 )
end
if isa(im, uint8 )
newim = double(im)
else
newim = im
end
rescale range 0-1
newim = newim-min(min(newim))
newim = newim./max(max(newim))
newim = newim.^(1/g) Apply gamma function
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File list (Check if you may need any files):
adjgamma.m
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