[jira] [Created] (TIKA-3416) Extract logical images from PDFs

["Tim Allison (Jira)" <ji...@apache.org>]

Tim Allison created TIKA-3416:
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             Summary: Extract logical images from PDFs
                 Key: TIKA-3416
                 URL: https://issues.apache.org/jira/browse/TIKA-3416
             Project: Tika
          Issue Type: New Feature
            Reporter: Tim Allison


PDFs, bless their hearts, can store a logical image as hundreds or thousands of subimages that when rendered, look like one image.

It would be handy for some use cases to do the geometry to find bounding boxes for image components and then render those bounding boxes so that a human gets a "logical image" <hand_waving>most of the time</hand_waving>.

There would have to be some heuristics for when to give up and just render the whole page, but I think we could do something that performed well enough.  More importantly, I'm sure this is a solved problem...any recs for efficient algorithms for this?

What do you think?





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