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https://issues.apache.org/jira/browse/PDFBOX-5581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17704430#comment-17704430
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Tilman Hausherr edited comment on PDFBOX-5581 at 3/24/23 3:27 AM:
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I ran PDFToImage of 2.0.27 with and without subsampling, and I barely see a
difference. And that one is expected, subsampled means a slight quality loss if
I zoom the result image. If this is a problem, then don't use it. It only makes
sense if you're displaying huge images.
was (Author: tilman):
I ran PDFToImage of 2.0.27 with and without subsampling, and I barely see a
difference. And that one is expected, subsampled means a slight quality loss if
I zoom the result image !test-sub-subsampled.jpg! compared to
!test-sub-notsubsampled.jpg! . If this is a problem, then don't use it. It only
makes sense if you're displaying huge images.
> renderer.setSubsamplingAllowed(true) causing the picture to blur
> ----------------------------------------------------------------
>
> Key: PDFBOX-5581
> URL: https://issues.apache.org/jira/browse/PDFBOX-5581
> Project: PDFBox
> Issue Type: Improvement
> Affects Versions: 2.0.27
> Reporter: liu
> Priority: Major
> Attachments: screenshot-1.png, screenshot-2.png,
> test-sub-notsubsampled.jpg, test-sub-subsampled.jpg, test.pdf
>
>
> !screenshot-1.png!
> renderer.setSubsamplingAllowed(true) causing the picture to blur.
> This causes the following words to be obscured.
> hi！Is there a way to customize the getSubsampling method?like this.
> I want to display the original image within the specified width and height
> !screenshot-2.png!
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