Niclas,
That should work. Could you give some more detail about the details of the
SampleModel and ColorModel in the ImageTypeSpecifier, e.g., number of bands,
bits per sample, alpha presence, alpha type.
Brian
On Tue, 7 Dec 2004, Niclas Hedhman wrote:
> Hi,
>
> I have a small image processing servlet, that does;
>
> m_Format = "png" in this case.
>
> private void write( BufferedImage image )
> throws ProcessingException, IOException
> {
> ImageTypeSpecifier its = ImageTypeSpecifier.createFromRenderedImage(
> image );
> Iterator writers = ImageIO.getImageWriters( its, m_Format );
> ImageWriter writer = null;
> if( writers.hasNext() )
> {
> writer = (ImageWriter) writers.next();
> }
> if( writer == null )
> throw new ProcessingException( "Unable to find a ImageWriter: " +
> m_Format );
>
> /// And so on....
> }
> The effectsStack is basically a set of ImageOp's, mostly used is the Scale.
>
> Now, if I take a 32bpp TIFF and feed it to the routine above, Image I/O won't
> find a writer for it, but a 24bpp TIFF is no problem.
> (I don't think it matters; prior to the write operation, the TIFF has been
> rescaled using java.awt.image raster operations, but the ColorModel from the
> incoming BufferedImage is used for the new rescaled image.)
>
>
> Anyone have a clue why this seems to be the case?
>
>
> Cheers
> Niclas
> --
> +------//-------------------+
> / http://www.dpml.net /
> / http://niclas.hedhman.org /
> +------//-------------------+
>
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----------------
Brian Burkhalter
Advanced Development, Graphics and Media
Software Chief Technology Office
Sun Microsystems, Inc.
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