Michał Pomarański created PDFBOX-4591:
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Summary: Black dots and rectangles when converting from pdf to png
Key: PDFBOX-4591
URL: https://issues.apache.org/jira/browse/PDFBOX-4591
Project: PDFBox
Issue Type: Bug
Affects Versions: 2.0.16
Reporter: Michał Pomarański
Attachments: test-pdf.pdf
I get a weird black dots and rectangles/elipses when I'm trying to convert a
pdf file to png image with pdfbox. I haven't noticed anything specific about
those pdf files except that they're scanned files. I've also tried using the
linux tool `convert` and with that tool I don't have any problems. Here's a
sample of the code I'm using:
{code:java}
private static BufferedImage rasterizePdfBox(String ref, int pageIndex,
PDFRenderer renderer, PreviewMode mode) throws IOException {
Future<BufferedImage> result = executorService.submit(() -> {
LOGGER.info(String.format("Generate preview for ref: %s, page: %s,
mode: %s ", ref, pageIndex, mode.name()));
return renderer.renderImageWithDPI(pageIndex - 1, mode.getDpi(),
ImageType.RGB);
});
try {
return result.get();
} catch (InterruptedException | ExecutionException e) {
LOGGER.error(String.format("Error when generating preview: %s",
e.getMessage()));
Thread.currentThread().interrupt();
throw new IOException(e.getMessage());
}
{code}
I'm attaching an example file that I have this problem with. Thanks!
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