The idea is to have a small raspberry at the office that you can send mail to. When you send him a mail whose object is scan this and with an image attachement, it will resize and clean the image so it looks like a real scanned image and send it back to you as a reply.
python scan.py --image nameOfImage.jpg
will produce a file out.pdf with the processed image.
This script for cleaning is inspired by pyimageseach.
In a login.json at the root of the project:
{"host": "gmail.com", "password": "yourpassword", "message": "test", "user": "bxnode.scan@gmail.com", "port": 587}
You'll need opencv installed:
sudo apt-get -y install libopencv-dev python-opencv