PLEASE HELP!!! URGENT!!!! convert a jpg CMYK to jpg RGB

Question

Hello i need to convert to image jPG CMYK to jpg RGB..y try with this code:
<code>
RenderedOp image = JAI.create("fileload", "C:/Documents and Settings/rsornes/Desktop/Imagenes/fondo grde con simb_copei.jpg");
JAI.create("filestore", convertCMYKtoRGB(image), "C:/Documents and Settings/rsornes/Desktop/001.jpg", "JPEG", null);
.....>
public static RenderedOp convertCMYKtoRGB(RenderedOp op) {
try {
// -- Convert RGBA to CMYK
// -- because JAI reads CMYK as RGBA
ICC_Profile cmyk_profile = ICC_Profile.getInstance("C:/Documents and Settings/rsornes/Desktop/jai/CMYK.pf");
ICC_ColorSpace cmyk_icp = new ICC_ColorSpace(cmyk_profile);
ColorModel cmyk_cm =
RasterFactory.createComponentColorModel(op.getSampleModel().getDataType(),
cmyk_icp,
false,
true,
Transparency.OPAQUE);
ImageLayout cmyk_il = new ImageLayout();
cmyk_il.setColorModel(cmyk_cm);
RenderingHints cmyk_hints = new RenderingHints(JAI.KEY_IMAGE_LAYOUT, cmyk_il);
ParameterBlockJAI pb = new ParameterBlockJAI("format");
pb.addSource(op);
pb.setParameter("datatype", op.getSampleModel().getDataType());
op = JAI.create("format", pb, cmyk_hints);
// -- Convert CMYK to RGB
ColorSpace rgb_icp = ColorSpace.getInstance(ColorSpace.CS_sRGB );
ColorModel rgb_cm =
RasterFactory.createComponentColorModel(op.getSampleModel().getDataType(),
rgb_icp,
false,
true,
Transparency.OPAQUE);
ImageLayout rgb_il = new ImageLayout();
rgb_il.setSampleModel(rgb_cm.createCompatibleSampleModel(op.getWidth(),
op.getHeight()));
RenderingHints rgb_hints = new RenderingHints(JAI.KEY_IMAGE_LAYOUT, rgb_il);
pb = new ParameterBlockJAI("colorconvert");
pb.addSource(op);
pb.setParameter("colormodel", rgb_cm);
op = JAI.create("colorconvert", pb, rgb_hints);
} catch(Exception ex) {
ex.printStackTrace();
return op;
</code>
With this code work but de image jpg RGB result is not have the same color that of the original jpg CMYK...the image result (jpg RGB ) is very dark is almost black color....please i need urgen to resolve this
if you kwon whta happends with my code thanks and if exist other code that you have...thanks
thanks
Rafael

Answer 1

I don't know anything about this topic, but I've seen a lot of posts about it.
http://www.google.com/search?q=convert+cmyk+site:forum.java.sun.com&sourceid=opera&num=0&ie=utf-8&oe=utf-8