You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@pdfbox.apache.org by "Ludovic Davoine (JIRA)" <ji...@apache.org> on 2014/06/10 14:06:02 UTC
[jira] [Updated] (PDFBOX-2128) CMYK images are not supported
correctly in the PDJpeg class
[ https://issues.apache.org/jira/browse/PDFBOX-2128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ludovic Davoine updated PDFBOX-2128:
------------------------------------
Description:
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 ++;
}
}
}
}
}
}
was:
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 ++;
}
}
}
}
}
}
> 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
> Labels: PDJpeg, cmyk, images
> Fix For: 1.8.5
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> 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)