PdfToImage no longer works as expected with jdk/java 7; image quality problem
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Key: PDFBOX-1206
URL: https://issues.apache.org/jira/browse/PDFBOX-1206
Project: PDFBox
Issue Type: Bug
Components: PDModel
Affects Versions: 1.6.0, 1.7.0
Environment: All (tested on OS X and Solaris but believe it affects
all platforms), tested java 7 update 1 & update 2
Reporter: Armando Singer
I've done a extensive testing of pdfbox under the new Java 7, update 1 & update
2 releases, and am noticing
severe image quality issues when converting a pdf to an image.
Attached is the same pdf turned converted to an image under Java 6, then again
with Java 7
with the same code. The Java 7 version looks pretty bad.
This is with jdk 1.7 update 1 & 2 (for solaris x64, running headless, and OS X
running Java 7 preview update 2 with default with no addition vm args to the
default java command). I've also tested against
the latest code in svn (the images below are from the most current version).
The good image below is from a recent version of the jdk 1.6 (and it has always
looked good
on at least jdk1.5+).
To test, I used code like this:
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
public final class PdfToImageTest {
public static BufferedImage toBufferedImage(final String pdfFile, final int
resolution)
throws IOException {
PDDocument document = null;
try {
document = PDDocument.load(pdfFile);
final PDPage page = (PDPage)
document.getDocumentCatalog().getAllPages().get(0);
final BufferedImage result =
page.convertToImage(BufferedImage.TYPE_INT_ARGB, resolution);
return result;
} finally {
if (document != null) {
document.close();
}
}
}
public static void main (String[] args) throws IOException {
ImageIO.write(toBufferedImage(args[0], 108), "png", new File(args[1]));
}
}
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