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https://issues.apache.org/jira/browse/PDFBOX-5438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17539679#comment-17539679
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Frank Zhou commented on PDFBOX-5438:
------------------------------------
Hi [~tilman], thanks for your reply.
TIFF files came from scanning, and "randomly" means it is reproducible for the
same files. Sometimes the result is completely blurry and sometimes is
partially blurry, as shown in the screenshot.
We used the code block to get the byte[] of the converted pdf file, the input
tiff file could be colored.
> Blurry PDF results from Tif Conversion
> --------------------------------------
>
> Key: PDFBOX-5438
> URL: https://issues.apache.org/jira/browse/PDFBOX-5438
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.24
> Reporter: Frank Zhou
> Priority: Critical
> Attachments: PartialBlurryResult.png
>
>
> When converting a tif/tiff file to a pdf using PDImageXObject, we noticed
> that the final result could be completely or partially blurry sometimes. It
> happens on our server hosted on the cloud randomly but never happens on the
> server that runs on the local machine (laptop).
> What could be the causes for this rendering issue, and could you help us with
> any suggestive actions we could take to investigate further and resolve the
> issue? We can't attach the result file because it contains our customer
> information.
> Thanks for your understanding, and we appreciate your help and support!
>
> {code:java}
> // Tiff -> PDF conversion
> final ImageReader reader = iterator.next();
> reader.setInput(imageInputStream);
> final int numPages = reader.getNumImages(true);
> for (int i = 0; i < numPages; i++) {
> final BufferedImage bufferedImage = reader.read(i);
> final PDRectangle pageSize =
> new PDRectangle(bufferedImage.getWidth(),
> bufferedImage.getHeight());
> final PDPage page = new PDPage(pageSize);
> document.addPage(page);
> PDImageXObject pdImageXObject =
> LosslessFactory.createFromImage(document, bufferedImage);
> PDPageContentStream content = new PDPageContentStream(document, page);
> content.drawImage(
> pdImageXObject,
> 0,
> 0,
> page.getMediaBox().getWidth(),
> page.getMediaBox().getHeight());
> content.close();
> }
> ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
> document.save(byteArrayOutputStream);
> document.close();
> return byteArrayOutputStream.toByteArray(); {code}
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