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EDIT October 9, 2008: Updated script to work in GIMP 2.6 (the newest stable version.) If you have a previous version of this script, please delete it to avoid conflicts.
Let me know if you have any trouble with it. See update information in bold below.... This script was made as the result of a request by Photocomix ([link]) and uses steps he described in creating a contrast mask in a method different from a "typical" contrast mask due to a bug in GIMP's Overlay Mode. It works in GIMP 2.4 only. If you would like a script for GIMP 2.2, click here: [link] The script makes a duplicate of the active layer and places it above the active layer. The blend mode of the duplicate layer is set to Hard Light. The bottom layer is desaturated using the desaturation type set by the user and the colors of the original layer can be inverted if the user so chooses. A Gaussian Blur is applied using horizontal and vertical blur settings set by the user when the script is first run. The layers can be merged if desired. Updated 1/16/08: The option to work on the selected area only has been removed. After several tests of my own and comments from PhotoComix, we decided that working on the selected area was just too unsightly and didn't produce the desired results. So, that option's just been removed. Updated 1/11/08: Based on some suggestions/requests by Photocomix (PC), I've updated the script to work much better. The updates implement some new defaults as requested by PC, as well as allow the user to decide if the script will work on an existing selection only. That way, if you only want portions of the layer affected, the actions will take place on the selected area only. The script actually works on the whole layer, but I've used layer masks to hide the rest of the area. Also, if the merge option is left off, the layer masks will be kept in place you can tweak the mask at your leisure. I've also made the script name each layer based on the appropriate action taken on the respective layer. Hope you like the changes. Just click on the download link to open the script in your browser window and then save it (File Menu > Save) in your GIMP scripts folder (ie....C:\Program Files\GIMP-2.0\share\gimp\2.0\scripts) Then, go to the main GIMP window (not the image window) and choose the Filters > Script-FU > Refresh Scripts and the script can be found in the Image's Filters Menu > Photo > Photocomix Contrast Mask... Enjoy! Art |
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January 3, 2008
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Comments
but only because i was too impatient to post the comment and then run to try the script
Jo
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John 15:13 \"Greater love hath no man than this, that a man lay down his life for his friends.\"
Art
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Yes, Art is my real name!
"I don't know about genius, I'd more say it was stupidity let loose...." Siminart
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Art
--
Yes, Art is my real name!
"I don't know about genius, I'd more say it was stupidity let loose...." Siminart
GIMP Dome ; Need Gimp Brushes? Check Here!
a side note script ignore selection if any
I think this is commune to all contrast mask script, not sure about,
anyway in case of need should be easy use a layer mask.
Not sure if most will understand the "invert colors" option:
as default is checked and that is a contrast mask:
it will lower contrast and reveal detail were needed, is useful on over-contrasted images
By unchecking that option result is almost the opposite
is useful on flat undercontrasted images, it will boost contrast on same area...but detail on shadows will be not lost , not totally (as may happen just by increasing contrast) because the blurring still will sharpen and give more relief, and that will compensate, help to preserving details in even over-contrasted areas
skipping the invert colors will invert sharpening too, meaning a soft flow effect instead then sharpen (more the blurring radius more the flow...i suppose flow describe this effect better word then blur)
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Very nice script. The effect produced is very pleasing.
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It seems meaninglessly drawn out and complicated.
Art
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Yes, Art is my real name!
"I don't know about genius, I'd more say it was stupidity let loose...." Siminart
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