convertToImage mangles images which were in the PDF
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Key: PDFBOX-958
URL: https://issues.apache.org/jira/browse/PDFBOX-958
Project: PDFBox
Issue Type: Bug
Affects Versions: 1.4.0, 1.2.1
Environment: WinXP, java version "1.6.0_23"
Reporter: Eric Schwarzenbach
Priority: Critical
Of the PDFs we've tried running through PDFBox and generating page images, a
number of them (coming from disparate sources and method of creation) seem to
produce images where an image that was embedded in the page of the PDF shows
somewhat mangled. It seems to be divided by horizontal stripes, where some
stripes look normal, others seem to have some kind of "smearing" effect going
on. See attached images and original PDF (image is of page 13).
I marked this as critical as we are trying to use PDFBox in a project where
page images are crucial, and inability to produce reasonable looking page
images is pretty much a deal breaker.
The code we use to extract the images looks more or less like the following:
BufferedImage image =
page.convertToImage();
SmartDeferredFileOutputStream outStream
= new SmartDeferredFileOutputStream();
String[] writerFormatNames =
ImageIO.getWriterFormatNames();
ImageIO.write(image, "jpeg", outStream);
outStream.close()
We've also tried specifying "png". In both "jpg" and "png" cases we get an
image file that is indeed the correct format, and both images look exactly the
same.
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