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https://issues.apache.org/jira/browse/PDFBOX-3823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16048342#comment-16048342
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Tilman Hausherr commented on PDFBOX-3823:
-----------------------------------------
Please try this code:
{code:java}
public static PDImageXObject createFromCMYKImage(PDDocument document,
BufferedImage cmykImage)
throws IOException
{
int height = cmykImage.getHeight();
int width = cmykImage.getWidth();
WritableRaster raster = cmykImage.getRaster();
byte[] data = new byte[width * height * 4];
int byteIdx = 0;
int[] pixel = null;
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
pixel = raster.getPixel(x, y, pixel);
for (int c = 0; c < 4; ++c)
{
data[byteIdx++] = (byte) pixel[c];
}
}
}
return prepareImageXObject(document, data, width, height, 8,
PDDeviceCMYK.INSTANCE);
}
private static PDImageXObject prepareImageXObject(PDDocument document,
byte[] byteArray, int width, int height, int bitsPerComponent,
PDColorSpace initColorSpace) throws IOException
{
//pre-size the output stream to half of the input
ByteArrayOutputStream baos = new ByteArrayOutputStream(byteArray.length
/ 2);
Filter filter = FilterFactory.INSTANCE.getFilter(COSName.FLATE_DECODE);
filter.encode(new ByteArrayInputStream(byteArray), baos, new
COSDictionary(), 0);
ByteArrayInputStream encodedByteStream = new
ByteArrayInputStream(baos.toByteArray());
return new PDImageXObject(document, encodedByteStream,
COSName.FLATE_DECODE,
width, height, bitsPerComponent, initColorSpace);
}
{code}
> Question about forming a PDF document, including CMYK images for printing.
> --------------------------------------------------------------------------
>
> Key: PDFBOX-3823
> URL: https://issues.apache.org/jira/browse/PDFBOX-3823
> Project: PDFBox
> Issue Type: Task
> Components: PDModel
> Affects Versions: 2.0.6
> Reporter: Mikhail Semionenko
> Assignee: Tilman Hausherr
> Priority: Minor
> Labels: CMYK
> Fix For: 2.0.7, 3.0.0
>
> Attachments: Screen Shot 2017-06-09 at 11.37.22.png
>
>
> It is necessary to form a PDF document, which in the future will be sent to
> print the company's printers. There are several ICC files provided by
> companies for printing.
> I have RGB images that should be in CMYK after adding to PDF.
> My code is now for drawing an image:
> ImageObject = LosslessFactory.createFromImage (document, image);
> ContentStream.drawImage (imageObject, position.x, position.y,
> imageSize.width, imageSize.height);
> I'm wondering whether it is possible to display images in a document in
> ColorSpace CMYK? Unfortunately, I'm not find working examples yet.
> If so, how can I get PDImageXObject in CMYK ColorSpace from BufferedImage in
> RGB ColorSpace?
> When I try to create PDImageXObject instance from CMYK image file I get
> exception:
> javax.imageio.IIOException: Unsupported Image Type
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