Legacy ImageMagick Discussions Archive

I have an image that will be automatically generated repeatedly, that has "too much green" in the image, so I am trying to reduce the level of green... so far I have tried variations of:

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convert in.png -colorspace HSL -colorspace HSL -channel R -evaluate multiply 1.2 -channel B -evaluate multiply 1.1 -channel G -evaluate multiply 1.1 out.png

using one channel at a time, two, or three channels.. and while the green can be reduced, it ends up "messing with" the other colors as well... so I also tried variations of:

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convert  rgb.png  -gamma 1.0,0.4,1.0 out.png

Here is a sample without any edits... I can reduce the green, but my boss says the browns don't show up well enough, and I said well imagemagick can do anything, he said show me.. so here I am 4 hours later asking for help lol

... How can we reduce the green and "bring out" the browns? brown is like red and green combined, so ... i don't know.. i've tried everything I can think of

hakuna matata

try

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convert Image16.png -channel g -evaluate multiply 0.9 +channel result.png

Adjust the 0.9 as desired. You can also increase the other channels if you want by similar means.

High, and thank you... unfortunately that results in the same thing I showed above with the -colorspace HSL examples :/ ... i tried variations of multiple and divide, but the results simply are not what the boss is looking for (why i've struggled for so many hours!) ... thanks for trying though!

Can you explain how you want the green to change? Or provide an example. You can use -modulate B,S,H to shift the hues toward red or blue or just lower the saturation (and optionally increase brightness)

try

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convert Image16.png -modulate 100,100,120 result1.png
convert Image16.png -modulate 100,100,70 result2.png
convert Image16.png -modulate 100,50,100 result3.png

Legacy ImageMagick Discussions Archive

reducing one channel while enhancing others

reducing one channel while enhancing others

Re: reducing one channel while enhancing others

Re: reducing one channel while enhancing others

Re: reducing one channel while enhancing others