Check image resolution and color

Please let me know whether it is possible to get the image resolution and color used in a eps file.
regards,
Sashi

You can specify the resolution for exporting, for document etc but resolution of the raster objects can not be retrieved.
Color space of the raster object can be retrieved using the rasterItems : colorants or imageColorSpace properties

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Original Image Resolution and Color getting Distorted

Hi All,
I am using JAI for reading images from a source i have to read the images and than have to split the images
initially i was using ImageIO.read() method to read images but for some images it was throwing error as
javax.imageio.IIOException: Unsupported Image Type
     at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(Unknown Source)
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     at deepzoomconvertor.Main.main(Main.java:86)so in such exception cases i am trying to read the images using JAI and i am successful in reading images
here is the piece of code i am using for this
BufferedImage result = null;
   SeekableStream ss=SeekableStream.wrapInputStream(new FileInputStream(file), false);
           ParameterBlock pb = new ParameterBlock();
           pb.add(ss);
           RenderedOp rm=JAI.create("JPEG", pb);
           result=rm.getAsBufferedImage();
             return result;it able to split images but the quality of images are poor it losts its original color format.
can any one have any idea how to do it while retaining the quality of image color and resolution
Thanks in advance
Umesh

The JPEG you are reading is a cmyk color space one. They're not common, but they do occasionally pop up in a collection of random jpeg images.
The default JPEGImageReader that comes with the jdk cannot read them. And it will throw an exception - the exact same one you got - stating it can't. JAI's behavior is a little worse. It will read the image without exception, when in fact it to can't read it. It doesn't handle the cmyk aspect right, so you get a messed up image.
The native JPEGImageReader that comes with installing [JAI-ImageIO|https://jai-imageio.dev.java.net/binary-builds.html] can read them. It appropriately decodes the ICC_Profile embedded within the JPEG and you get a cmyk BufferedImage. But if you wish to render this TYPE_CUSTOM BufferedImage, go grab a coffee while you wait for it to slooooowwwllly paint. You'll have to do a ColorConverOp to turn the cmyk BufferedImage into an rgb one (so Java2D can render it fast).
Having done all this you'll find that 1) ColorConvertOp makes the image too bright and 2) The native PNGImageReader that comes with installing JAI-ImageIO has an affinity for returning TYPE_CUSTOM BufferedImages (arggg!!!).
I'll help you fix points (1) and (2) if you get that far. Maybe the best choice is to simply give up on cmyk jpegs. They're only used in printing press environments, and people only use color space aware applications (like Photoshop) to manipulate them in any meaningful way.

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Thanks.

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Message Edited by thetreoguy on 03-17-2009 10:29 AM

Check image resolution and color

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