Hi all,
Setting the background color to "black" and flattening the image before separating the red (or any other) channel fixed the problem.
Transparent pixels of the image are in fact "white pixels with zero opacity" so they are included in every channel if I don't replace them with black ones ...
Search found 3 matches
- 2014-01-05T16:26:20-07:00
- Forum: Users
- Topic: Separate channel gives the CMY channels instead of RGB ones.
- Replies: 5
- Views: 2576
- 2014-01-05T11:03:31-07:00
- Forum: Users
- Topic: Separate channel gives the CMY channels instead of RGB ones.
- Replies: 5
- Views: 2576
Re: Separate channel gives the CMY channels instead of RGB o
Thanks for the reply.
I think I misunderstand the function of "separate". What I want to do is to copy the RED pixels from the source image to the destination. (Also the GREEN and the BLUE ones as separate images). I mean, I want to obtain 3 grayscale images representing the RED, GREEN and BLUE ...
I think I misunderstand the function of "separate". What I want to do is to copy the RED pixels from the source image to the destination. (Also the GREEN and the BLUE ones as separate images). I mean, I want to obtain 3 grayscale images representing the RED, GREEN and BLUE ...
- 2014-01-05T04:49:00-07:00
- Forum: Users
- Topic: Separate channel gives the CMY channels instead of RGB ones.
- Replies: 5
- Views: 2576
Separate channel gives the CMY channels instead of RGB ones.
Hi all,
I have a PNG image that I want to separate into its RGB channel using the instruction below:
convert 009.png -set colorspace RGB -separate 009.png
Here is the imput image:
http://www.bunsar.com/downloads/009.png
And the output images:
http://www.bunsar.com/downloads/009-0.png
http ...
I have a PNG image that I want to separate into its RGB channel using the instruction below:
convert 009.png -set colorspace RGB -separate 009.png
Here is the imput image:
http://www.bunsar.com/downloads/009.png
And the output images:
http://www.bunsar.com/downloads/009-0.png
http ...