A process of deskewing, cropping and OCRing scanned documents, just like the Doxie Scanner App does - but for Command line

doxie.sh

#!/bin/bash
# Emulates the process of a Doxie workflow
# - Deskewing
# - Cropping black border
# - Convert to PDF
# - OCR
#
# Dependencies: imagemagick, tesseract, tesseract-data-deu

# Check if all working directories exist
if [ ! -d "Input" ]; then
  echo "Input directory not found. Please create Input directory."
  exit 1
fi

if [ ! -d "Deskewed" ]; then
  mkdir -p Deskewed
fi

if [ ! -d "Cropped" ]; then
  mkdir -p Cropped
fi

if [ ! -d "Output" ]; then
  mkdir -p Output
fi

# Deskew images
echo "Deskewing images..."
cd Input 
for f in *.JPG
do
  convert $f -set option:deskew:auto-crop true -background black -deskew 40%  ../Deskewed/$f
done

# Crop black borders from images
echo "Cropping images..."
cd ../Deskewed
for f in *.JPG
do
  convert $f -bordercolor black -border 1x1 -fuzz 40% -trim ../Cropped/$f
done

# OCR the PDF files
echo "OCR processing..."
cd ../Cropped
for f in *.JPG
do
  filename=$(echo $f | cut -f 1 -d '.')
  tesseract $f ../Output/$filename pdf
done

# Clean up the intermediate folders
cd ..
rm -r Deskewed
rm -r Cropped