I tried to run OCR on multiple scanned sheets with numbers like this image (All with same background, digits only):
But all trials failed! I tried offline OCRs: gocr, tesseract and couple of online OCRs; but all TOTALLY failed!
What should I do?
First you must tweak those images. I recommend a batch tool like XnViewMP which is free and multiplatform.
It has a file explorer. Select all your images, then go to Tools - Batch convert. Add actions like I did:
Here are my actions:
Don't forget to save as
Note I selected PSM mode 7: Treat the image as a single text line. If you have multiple lines you'll probably need to use mode 6 or 3.
And here are the contents of
I tried to recognise your image with OCR technology by ABBYY:
More information about ABBYY's products you can find at abbyy.com.