Ludovic Davoine created PDFBOX-2128:
---------------------------------------
Summary: CMYK images are not supported correctly in the PDJpeg
class
Key: PDFBOX-2128
URL: https://issues.apache.org/jira/browse/PDFBOX-2128
Project: PDFBox
Issue Type: Bug
Components: PDModel
Affects Versions: 1.8.5
Environment: Windows 7 Professional
Running jvm: Java HotSpot(TM) 64-Bit Server VM - 1.6.0_26-b03 - 20.1-b02 - Sun
Microsystems Inc
Reporter: Ludovic Davoine
Fix For: 1.8.5
I have a PDF with CMYK images inside and i need to extract the images in the
RGB format. But the PDJpeg class seems to not work correctly; the colors are
bad. Example:
- Original image in te PDF : http://ludoda.free.fr/IMAGE_IN_PDF.jpg
- Extracted image: http://ludoda.free.fr/IMAGE_EXTRACTED.jpg
You can download the PDF : http://ludoda.free.fr/PORSCHE_CMYK.PDF
and try my simple Test Case (I'm using PDFbox 1.8.5):
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.imageio.ImageIO;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDJpeg;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObject;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;
public class TestCase {
public static void main(String[] args)
{
try
{
System.out.println("START EXTRACTING IMAGES...");
read_pdf();
System.out.println("COMPLETE");
}
catch (IOException ex)
{
System.out.println("" + ex);
}
}
public static void read_pdf() throws IOException
{
PDDocument document = null;
document = PDDocument.load("C:\\temp\\PORSCHE_CMYK.pdf");
@SuppressWarnings("unchecked")
List<PDPage> pages =
document.getDocumentCatalog().getAllPages();
Iterator<PDPage> iter = pages.iterator();
int i =1;
while (iter.hasNext())
{
PDPage page = (PDPage) iter.next();
PDResources resources = page.getResources();
Map<String, PDXObject> pageImages =
resources.getXObjects();
if (pageImages != null)
{
Iterator<String> imageIter =
pageImages.keySet().iterator();
while (imageIter.hasNext())
{
String key = (String) imageIter.next();
if(pageImages.get(key) instanceof
PDXObjectImage)
{
PDJpeg image = (PDJpeg)
pageImages.get(key);
// Test 1 : write2file
image.write2file("C:\\workspace\\JAVA_PDFTools\\temp\\image" + i);
// Test 2: getRGBImage
BufferedImage
bimage=image.getRGBImage();
File outputfile = new
File("C:\\workspace\\JAVA_PDFTools\\temp\\image" + i+"_buffered.jpg");
ImageIO.write(bimage, "jpg",
outputfile);
i ++;
}
}
}
}
}
}
--
This message was sent by Atlassian JIRA
(v6.2#6252)
