Search found 5 matches
- 2014-09-26T09:16:43-07:00
- Forum: Users
- Topic: Convert to PSD forcing RGB to grayscale
- Replies: 10
- Views: 5499
Re: Convert to PSD forcing RGB to grayscale
You did not post an RGB PSD image. It was simply grayscale PNG. Actually, when I run: identify tmpkb1Es2.png I get this result: /Users/chris/Dropbox/tmpkb1Es2.png PNG 2940x1302 2940x1302+0+0 8-bit sRGB 218KB 0.010u 0:00.000 So I believe ImageMagick thinks it's an RGB file (admittedly with the same ...
- 2014-09-25T09:54:06-07:00
- Forum: Users
- Topic: Convert to PSD forcing RGB to grayscale
- Replies: 10
- Views: 5499
Re: Convert to PSD forcing RGB to grayscale
Try this: convert tmpkb1Es2png -channel A -negate -separate gray.psd Tested with IM-6.8.9-8 on Ubuntu. Sorry, I just reread the subject of this thread and it's misleading. It should have read "Convert to PSD is forcing RGB to grayscale, how can I avoid this?". Your command works great, but it's ...
- 2014-09-24T22:01:00-07:00
- Forum: Users
- Topic: Convert to PSD forcing RGB to grayscale
- Replies: 10
- Views: 5499
Re: Convert to PSD forcing RGB to grayscale
How do you add a non-gray background? convert input.png -background "#112233" output.png Hmmm, given that command and an all black "input.png" save for its alpha channel, the result is a grayscale image. Same thing when I try something like: convert bg.png shadow.png fg.png final.psd bg.png and fg ...
- 2014-09-24T19:25:50-07:00
- Forum: Users
- Topic: Convert to PSD forcing RGB to grayscale
- Replies: 10
- Views: 5499
Re: Convert to PSD forcing RGB to grayscale
I do not think you can make a grayscale image into RGB in IM unless the data is different in each channel. IM and other tools will recognize that the data is the same in each channel and set the colorspace to gray, if that format supports gray. Perhaps someone else knows a way that I do not. Adding ...
- 2014-09-24T16:59:09-07:00
- Forum: Users
- Topic: Convert to PSD forcing RGB to grayscale
- Replies: 10
- Views: 5499
Convert to PSD forcing RGB to grayscale
I'm trying to convert an all black frame with data only in the alpha channel. When I try this command: convert tmpkb1Es2.png temp.psd The resulting file ends up with grayscale data in the R channel, no data in the G or B channel and a proper alpha channel. Running identify gives me this: identify ...