This PR enhances `pdfminer` image cleanup process by repositioning the
duplicate image removal step. It optimizes the removal of duplicated
pdfminer images by performing the cleanup before merging elements,
rather than after. This improvement reduces execution time and enhances
the overall processing speed of PDF documents.
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Co-authored-by: Yao You <theyaoyou@gmail.com>
This PR implements splitting of `pdfminer` elements (`groups of text
chunks`) into smaller bounding boxes (`text lines`). This implementation
prevents loss of information from the object detection model and
facilitates more effective removal of duplicated `pdfminer` text. This
PR also addresses #3430.
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Co-authored-by: ryannikolaidis <1208590+ryannikolaidis@users.noreply.github.com>
Co-authored-by: christinestraub <christinestraub@users.noreply.github.com>
This PR vectorizes the computation of element overlap to speed up
deduplication process of extracted elements.
## test
This PR adds unit test to the new vectorized IOU and subregion
computation functions.
In addition, running partition on large files with many elements like
this slide:
[002489.pdf](https://github.com/user-attachments/files/16823176/002489.pdf)
shows a reduction of runtime from around 15min on the main branch to
less than 4min with this branch.
Profiling results show that the new implementation greatly reduces the
time cost of computation and now most of the time is spend on getting
the coordinates from a list of bboxes.
This PR adds the ability to fill inferred elements text from embedded
text (`pdfminer`) without depending on `unstructured-inference` library.
This PR is the second part of moving embedded text related code from
`unstructured-inference` to `unstructured` and works together with
https://github.com/Unstructured-IO/unstructured-inference/pull/349.
This PR aims to remove duplicate embedded images taken by `PDFminer`.
### Summary
- add `clean_pdfminer_duplicate_image_elements()` to remove embedded
images with similar `bboxes` and the same `text`
- add env_config `EMBEDDED_IMAGE_SAME_REGION_THRESHOLD` to consider the
bounding boxes of two embedded images as the same region
- refactor: reorganzie `clean_pdfminer_inner_elements()`
