RGB Curve .. hard light .. in im?

Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
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dognose
Posts: 265
Joined: 2005-03-08T22:16:37-07:00

RGB Curve .. hard light .. in im?

Post by dognose »

I'm trying to recreate this:

Image

from this 'shop tuturial

http://photoshopfrenzy.com/?p=94

I wasn't sure how the "hard light" and "rgb curve" actions would be performed in IM.

Does anyone have the commands that would get me started?
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fmw42
Posts: 25562
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Location: Sunnyvale, California, USA

Re: RGB Curve .. hard light .. in im?

Post by fmw42 »

not sure I understand all their steps correctly, but the curves part can be approximated by -level. Here is a close approximation of it in IM

Image

convert beardman.gif \
\( -clone 0 -sharpen 0x5 \) \
\( -clone 0 -clone 1 -compose hardlight -composite -sharpen 0x5 \) \
\( -clone 1 -clone 2 -compose blend -set option:compose:args 50 -composite \) \
-delete 0-2 -modulate 100,60,100 -level 0x80% beardman_proc.gif

Image

You can play with the parameters for -sharpen, -compose blend, -modulate (to desaturate) and -level.
dognose
Posts: 265
Joined: 2005-03-08T22:16:37-07:00

Re: RGB Curve .. hard light .. in im?

Post by dognose »

Wow, that's pretty amazing likeness..

I'm not actually getting quite as good as results right now.. not sure if I'm in too early an IM version or what..

I'll have to play around with that.
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