=================== icc_colorspace Plug-in Readme ==================

----- Introduction
This plug-in provides function that is equivalent to "Assign Profile" 
and "Convert To Profile" in Photoshop.


----- Requirements
The operation of this plug-in requires LittleCMS version 1.15 or later. 
Attached Windows binary code is built for a Pentium III or its 
compatible CPUs The operation has been checked by GIMP for Windows 
version 2.6.7.

----- What you need
* GIMP (Version 2.4 or later)

* ICC Profiles
   sRGB profile is included. Standard profiles such as Adobe RGB or 
   ColorMatch RGB is downloadable from Adobe website.

  (Mac)
   http://www.adobe.com/support/downloads/iccprofiles/iccprofiles_mac.html
  (Win/Linux)
   http://www.adobe.com/support/downloads/iccprofiles/iccprofiles_win.html

* Basic knowledge about ICC-based color management


----- How to use
To assign a color space, select "Image -> Mode -> Assign colorspace" 
from the menu of the image.

After the dialog opens, click "Workspace" to match it with the RGB space 
of Preferences and click "Profile" to assign any other profiles. If you 
choose "Unassign colorspace" then the profile that is currently assigned 
is discarded.

In case you choose "profile", click the next button to select an 
assigning profile.

After that, click OK to start assignment.

To convert the color space of an image, choose "Image -> Mode -> Convert 
colorspace..." from the menu of the image.

After the dialog opens, click "Workspace" to convert into the RGB space 
of Preferences and click "Profile" to convert with any other profiles.

In case you choose "Profile", click the next button to choose a profile 
of the destination color space.

Next, choose the Rendering intent. Generally, "Perceptual" or "Relative 
colorimetric" will do. If these options are chosen, selecting "Use BPC 
algorithm" usually generates better results.


NOTE : "Absolute colorimetric (2)" is an option to reproduce the results 
from Photoshop CS2.
To obtain the same results as any other application or CMMs, choose 
options any other than (2).


Finally, select "Flatten image" as necessary. The conversion of color 
spaces affects the layer projection because pixel values of each layer 
are modified. In case this effect is not ignorable, We recommend merging 
layers.

After that, click OK to start converting.

For more information, see guidebooks of Photoshop or color management.


----- Building and Installing
Same procedure and notes as readme file of Separate+.


----- Future Conception
Some of them may not be feasible...

* Supporting device link profiles
* Supporting abstract profiles
* Simple tool for making abstract profiles
* Conversion using CMM in ICM2.0 (Windows)


----- Author
Yoshinori Yamakawa <yamma-ma at users.sourceforge.jp>

http://cue.yellowmagic.info/softwares/separate-plus/index.html


----- License
This plug-in is licensed under the GNU General Public License version 2.

For more information, see COPYING.
