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https://issues.apache.org/jira/browse/PDFBOX-6010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17952038#comment-17952038
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Michael Klink commented on PDFBOX-6010:
---------------------------------------
You don't show your exact code, so just some ideas what you might currently
miss:
* Do you look for inline images in the content streams (and _not_ in the
resources?
* When recursing through the resources, do you consider all resource types that
may include images? In particular, do you check patterns and type 3 fonts?
* Do you also check annotations
> PDF Image Extraction resulting in an infinite recursion
> -------------------------------------------------------
>
> Key: PDFBOX-6010
> URL: https://issues.apache.org/jira/browse/PDFBOX-6010
> Project: PDFBox
> Issue Type: Bug
> Reporter: Kabir Soneja
> Priority: Major
> Labels: how-to
>
> Hi,
> I am working on extracting images from a PDF using pdfbox version 2.0.34.
> While doing so we have our own recursive logic to recurse through all
> PDResources for each page and within each page we check for all the objects
> to filter out images. This recursive logic has a max depth of 25 to avoid
> infinite recursion.
> When trying out the image extraction for the same PDF using the CLI, the
> image is extracted within a second indicating that the image extraction logic
> within the pdfbox source code is handling image extraction using an
> ImageGraphicsEngine defined within the source code.
> Can you help me understand:
> * To handle image extraction, are there are any API directly provided by
> PDFBox?
> * Is there any way to reuse the image extraction logic within the source
> code i.e is it exposed as a public API?
> * Any other suggestions to handle image extraction gracefully with/without
> recursion?
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