This tool uses several PDF and image processing tools (unpaper, pdfcrop, pdfseparate, poppler,netpbm, ImageMagick) and custom OpenCV methods for cropping scanned PDF documents to the area that contains content. Use the Docker container to crop a single PDF or process all PDF files in a directory.
For example_file.pdf go to directory where the file is located:
- Unix:
docker run --rm -v $(pwd):/pdfdir hnko/crop_scans example_file.pdf - Windows:
docker run --rm -v %cd%:/pdfdir hnko/crop_scans example_file.pdf
For processing a whole directory containing PDFs go to directory and call:
- Unix:
docker run --rm -v $(pwd):/pdfdir hnko/crop_scans - Windows:
docker run --rm -v %cd%:/pdfdir hnko/crop_scans
Build docker image: docker build -t crop_scans .