Thank you for your replies,
I'll investigate the recolor and evaluateImage and see what I come up with.
Search found 3 matches
- 2013-12-12T17:54:15-07:00
- Forum: Users
- Topic: using fx to add a constant to each rgb pixel
- Replies: 4
- Views: 3201
- 2013-12-12T09:15:23-07:00
- Forum: Users
- Topic: using fx to add a constant to each rgb pixel
- Replies: 4
- Views: 3201
Re: using fx to add a constant to each rgb pixel
I gave up on the fx function and just did the following:
1.create a new grayscale image for the amount you want to lighten/darken
2. use composite_plus or composite_minus to darken or lighten the image.
it seems much faster.
$tmp = new Imagick();
$tmp->newImage($img->getImageWidth(), $img ...
1.create a new grayscale image for the amount you want to lighten/darken
2. use composite_plus or composite_minus to darken or lighten the image.
it seems much faster.
$tmp = new Imagick();
$tmp->newImage($img->getImageWidth(), $img ...
- 2013-12-12T08:27:13-07:00
- Forum: Users
- Topic: using fx to add a constant to each rgb pixel
- Replies: 4
- Views: 3201
using fx to add a constant to each rgb pixel
Hi,
I'm looking for a way to add a constant value to each of the rgb pixel of an image. I'm currently using the fxImage function in php.
The reason I want to do this is am trying to change the brightness of the image similar to how my html5 javscript library does it.
I can do what I want using ...
I'm looking for a way to add a constant value to each of the rgb pixel of an image. I'm currently using the fxImage function in php.
The reason I want to do this is am trying to change the brightness of the image similar to how my html5 javscript library does it.
I can do what I want using ...