Hi all!
How can I emulate GIMP's (gimp-brightness-contrast) using ImageMagick's convert?
I have the following GIMP script, which I've wrapped in a gimp-console:
<<<<<<<<<<<<
(let*
((in-fn "Input.bmp")
(out-fn "Input_out.bmp")
(brightness -90)
(contrast 116)
(img (car (gimp-file-load 1 in-fn in-fn)))
(drawable (car (gimp-image-get-active-drawable img))))
(gimp-brightness-contrast drawable brightness contrast)
(if (not (car (gimp-drawable-is-gray drawable)))
(gimp-image-convert-grayscale img))
(gimp-file-save 1 img drawable out-fn out-fn))
>>>>>>>>>>>>
The values of brightness and contrast should be settable. Reading from
the GIMP documentation:
<<<
This procedures allows the brightness and contrast of the specified
drawable to be modified. Both 'brightness' and 'contrast' parameters
are defined between -127 and 127."
>>>
And you can find the source for it here:
http://www.koders.com/c/fid5EF9F42E3382992A0F40D7661E390A40DD16120F.aspx?s=gimp+brightness+contrast#L1
Regards and thanks in advance,
-- Shlomi Fish
--
------------------------------------------
Shlomi Fish http://www.shlomifish.org/
Electrical Engineering studies. In the Technion. Been there. Done
that. Forgot a lot. Remember too much.
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