Re: Bug? cannot duplicate color channel

2000-03-14 Thread Zach Beane - MINT 

On Tue, Mar 14, 2000 at 06:13:18AM -0800, pixel fairy wrote:
 is seems you cannot do to the three color channels what you can to any 
 other, such as duplicate.
 duplicating a color channel is usefull for things like masking out 
 complex selections (like hair)

The RGB channels are not real channels, unfortunately. They're
pseudo-channels that don't act normal. Perhaps they will be promoted to real
channels after 1.2 comes out.

(Here is where Sven chastises me for saying this and tells me to read his
notes from the Camp...I would, if I knew where they were!) :)

Zach
-- 
Zachary Beane   [EMAIL PROTECTED]
PGP mail welcome.   http://www.xach.com/pgpkey.txt

Re: Bug? cannot duplicate color channel

2000-03-14 Thread Carey Bunks 


   is seems you cannot do to the three color channels what you can to any 
   other, such as duplicate.
   duplicating a color channel is usefull for things like masking out 
   complex selections (like hair)

Dear Pixel Fairy,

Try using Decompose (found in the Image:Image/Mode menu) with the RGB option.

Your friend,

The Tooth Fairy ;-)

Re: Bug? cannot duplicate color channel

2000-03-14 Thread pixel fairy 

Carey Bunks wrote:




   is seems you cannot do to the three color channels what you can to any 
   other, such as duplicate.
   duplicating a color channel is usefull for things like masking out 
   complex selections (like hair)

Dear Pixel Fairy,

Try using Decompose (found in the Image:Image/Mode menu) with the RGB option.

Your friend,

The Tooth Fairy ;-)





YEY!! Tooth fairy

thanks.

Re: Bug? cannot duplicate color channel

2000-03-14 Thread Garry R. Osgood 

pixel fairy wrote:

 is seems you cannot do to the three color channels what you can to any other, such 
as duplicate.
 duplicating a color channel is usefull for things like masking out complex 
selections (like hair)

Color channels are special; you can't get there from here.

But you can come close. Here's a few exercises.

0. Open an RGB image.
1.  Image-Mode-Decompose
2. Pick any decomposition into Red Green Blue; Hue, Saturation, Value
3. OK (Decomposing...)
4. You now have three or four greyscale images which can be readily fashioned
into channels.
5. Layers-Layers, Channels, and Paths...
6. Use the image menu to select the various decomposed greyscale images
7. Now you can drag-and-drop or copy and paste your decomposed greyscale images back
onto the original to create additional layers, channels, alpha masks
Or you can mess around with them with levels and curves first, for all
kinds of odd and interesting selection tricks.

Have fun.

Be good, be well

Garry