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Relativ and absolut colorimetric colorconversion?

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bteichmann
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Joined: 2004-01-08
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Hi,
using ColorConvertOp, is it prossible to specifiy the conversion algorithm ?
E.g. Photoshop uses "relative" and "absolut" colorimetric (and 2 other algorithms)
I did not found anything equivalent in ImageIO or JAI.
bodo

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Brian Burkhalter

The ColorConvertOp javadoc mentions only these RenderingHints keys

http://java.sun.com/javase/6/docs/api/java/awt/RenderingHints.html#KEY_C...
http://java.sun.com/javase/6/docs/api/java/awt/RenderingHints.html#KEY_D...

for controlling rendering.

Here is a comment from a colleague on the Java 2D team:

"Unfortunately, there is no way to specify the conversion algorithm within our
api. We are using the icPerceptual and icRelativeColorimetric rendering
intents. In the most cases icPerceptual. icRelativeColorimetric is only
used when the first profile in the color transform sequence represents
a printer device. The only way to have the icRelativeColorimetric
transformation (on a per pixel basis) is sequential applying the
toCIEXYZ()/fromCIEXYZ() method for each ICC color space from the color
transform sequence."

Brian

On Mon, 12 Feb 2007, jai-imageio@javadesktop.org wrote:

> Hi,
> using ColorConvertOp, is it prossible to specifiy the conversion algorithm ?
> E.g. Photoshop uses "relative" and "absolut" colorimetric (and 2 other algorithms)
> I did not found anything equivalent in ImageIO or JAI.
> bodo
> [Message sent by forum member 'bteichmann' (bteichmann)]
>
> http://forums.java.net/jive/thread.jspa?messageID=203370
>
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----------------
Brian Burkhalter
Java Media, Imaging, and Graphics
Sun Microsystems, Inc.

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