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Refactor ImageWriter and add method for exporting an image from bytes. #737

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merged 5 commits into from
Mar 22, 2022

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@pietermarsman pietermarsman commented Mar 21, 2022

Pull request

Fixes #434. All images from that related PDF are now properly extracted.

Refactor ImageWriter and add method for exporting an image from bytes. E.g. when FlateDecode just results in a list of RGB bytes.

Also removed outputting the image size as part of the path name. Not sure what the goal for that is. This will break code that is expecting a specific image name. But the proper way to do that is to use ImageWriter as a user and use the output name. So I'm ok with changing this.

How Has This Been Tested?

With the PDF in the issue. Test cases still succeed. All existing code is refactored but should not have changed.

Checklist

  • I have formatted my code with black.
  • I have added tests that prove my fix is effective or that my feature
    works
  • I have added docstrings to newly created methods and classes
  • I have optimized the code at least one time after creating the initial
    version
  • I have updated the README.md or verified that this
    is not necessary
  • I have updated the readthedocs documentation or
    verified that this is not necessary
  • I have added a concise human-readable description of the change to
    CHANGELOG.md

@pietermarsman pietermarsman merged commit 617e4c8 into master Mar 22, 2022
@pietermarsman pietermarsman deleted the 434-extract-flate-decode branch March 22, 2022 19:58
Beants added a commit to HiTalentAlgorithms/pdfminer.six that referenced this pull request Apr 26, 2022
* commit '1bf3c42b59125f4491d863e1c11dca7ebbe96adc':
  Use charset-normalizer instead of chardet (pdfminer#744)
  Refactor ImageWriter and add method for exporting an image from bytes. (pdfminer#737)
  Log warning and continue gracefully if errors in cmap (pdfminer#731)
  Fix log.debug statement in lzw.py by ensuring that self.table is always set (pdfminer#732)
  Raise KeyError when name in name2unicode is not of type str (pdfminer#733)
  Convert fontname to str if it is bytes in HTMLConverter (pdfminer#734)
  Fix github actions tag regex
  Fix github actions tag regex
  Bump version
  Add github action for releasing to pypi if git tag is added. (pdfminer#727)
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Successfully merging this pull request may close these issues.

Some images are not extracted as viewable images
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