I need a program that creates larger than average qr codes, and produces them as a bmp or jpg, and has the capability to read these images from a file rather than a webcam.

 

An attached example show the largest qr code available on the left, and a concept of the qr code i am trying to produce on the right.

 

A standard qr code holds up to 2800 characters or so. I would like to produce one that can hold 15,000 - 20,000