Search found 3 matches

by sanmarcos
2011-06-04T12:42:44-07:00
Forum: MagickWand
Topic: Adjust Channel Levels
Replies: 6
Views: 30192

Re: Adjust Channel Levels

I have made some adjustments, and it is so close that if it I did not have the images side by side, I could not tell the difference. One of them looks slightly darker/lighter, no big deal.

Thanks for your help!


MagickLevelImageChannel(magick_wand, RedChannel, 0.0, 1.11, 230 ...
by sanmarcos
2011-06-03T15:22:04-07:00
Forum: MagickWand
Topic: Adjust Channel Levels
Replies: 6
Views: 30192

Re: Adjust Channel Levels

I used this, which gets a pretty close result to what I needed.

MagickLevelImageChannel(magick_wand, RedChannel, 0.0, 1.11, 230);
MagickLevelImageChannel(magick_wand, GreenChannel, 0.0, 1.14, 238);
MagickLevelImageChannel(magick_wand, BlueChannel, 29, 0.81, 255);


Targetted image:
http://i ...
by sanmarcos
2011-06-03T11:40:10-07:00
Forum: MagickWand
Topic: Adjust Channel Levels
Replies: 6
Views: 30192

Adjust Channel Levels

I am trying to replicate a Photoshop effect. Image > Adjustments > Levels

Settings:
red: 0, 1.11, 230
green: 0, 1.14, 238
blue: 29, .81, 255
combined: 11, 1.29, 247

Input image:
http://i.imgur.com/dWe0q.png

Output image:

http://i.imgur.com/ezRbf.png

I tried doing something like ...