[jira] [Closed] (PDFBOX-4177) PDFBox seems to scale up image while it should not

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-4177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr closed PDFBOX-4177.
-----------------------------------
    Resolution: Not A Bug

Closing as this isn't a bug. This is the content stream:
{code:java}
q
  400 0 0 283 0 0 cm
  /Im1 Do
Q
{code}
The series of numbers is an affine transformation. The two non zero numbers are the width and the height. So all is as it should be.

I also found out how to tame Adobe Reader: go to preferences, page display preferences, and instead of choosing "use system setting", choose "custom resolution" of 72dpi. Then when choosing 100% the file is displayed as expected.

> PDFBox seems to scale up image while it should not
> --------------------------------------------------
>
>                 Key: PDFBOX-4177
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4177
>             Project: PDFBox
>          Issue Type: Bug
>            Reporter: Kamil
>            Priority: Major
>         Attachments: comparison-tilman.png, comparison.png, test.jpg, test.pdf
>
>
> I have a test image (in attachment) and the following code:
> {code:java}
>   public static void main(String[] args) {
>     final String filename = "test.jpg";
>     try (
>         final PDDocument doc = new PDDocument();
>         final FileInputStream input = new FileInputStream(new File(filename));
>         final ByteArrayOutputStream pdfOut = new ByteArrayOutputStream();
>         final FileOutputStream output = new FileOutputStream("test.pdf")
>     ) {
>       final PDImageXObject jpeg = PDImageXObject.createFromByteArray(doc, IOUtils.toByteArray(input), filename);
>       final PDPage page = new PDPage(new PDRectangle(jpeg.getWidth(), jpeg.getHeight()));
>       doc.addPage(page);
>       try (final PDPageContentStream contents = new PDPageContentStream(doc, page)) {
>         contents.drawImage(jpeg, 0, 0);
>       }
>       doc.save(pdfOut);
>       pdfOut.flush();
>       IOUtils.write(pdfOut.toByteArray(), output);
>     }catch (Exception e) {
>       e.printStackTrace();
>     }
>   }
> {code}
> The image in test.pdf is double sized (and quality is worse) than in original image



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