Retreive and validate information from Mexican DNI with OCR and image pre-processing.

Project for Mexico. I have a project to get information from Mexico DNI. We need to get the information from a images in different formats (jpg, png, tiff, bmp), which contain one side or both sides of a Mexican DNI (aka INE) The following needs must be met: 1. Retrieve DNI required information 2. Validate data against goverment information (we don't know yet if api is available, but manually can be validated in a webpage introducing some DNI's values ) 3. Validate the CURP (unique population registration code) (we don't know yet if api is available, but manually can be validated in a webpage introducing some DNI's values ) The images were scanned with a scanner, but they are not uniformly scanned. It would be necessary for the OCR module to automatically rotate image, before recognizing The process requires not taking more than 30 seconds per image and being able to do as many parallel processes as configured. The output is a json or xml file with the recovered and validated data. Only people with experience in image processing. Please show the working code of your previous projects.