Prepare

APT GET

sudo apt-get install ocrfeeder 
sudo apt-get install tesseract-ocr

Cropping examples

mogrify -format jpg -crop 3778x2002+2070+124 -quality 100 +repage *.png
mogrify -format jpg -crop 3778x2002+2070+124 -quality 100 -set 'x%d.jpg'  +repage *.jpg
mogrify -format jpg -crop 627x985 -quality 100 +repage *.jpg

Resize examples

mogrify -resize 300% -format png *.jpg
mogrify -format jpg -quality 60 -resize 50% *.bmp

Image quality adjustment

mogrify -brightness-contrast -50x+80 jackfaust_swanwick185.png

OCR

Single page

tesseract book_page1.png stdout -l eng
tesseract book_page2.png outtext -l eng

OCR script

for i in *.png ; do tesseract $i $i.txt -l eng; done;

Other commands

PS TO PDF

ps2pdf directory.ps 

Images to PDF

convert *.jpg book.pdf

PDF TO IMAGES

pdfimages -j /home/amarcinkowski/Documents/SampleWithImages.pdf /home/amarcinkowski/Documents/ExtractedImages/image