Which programming language can I use to create an OCR (optical character recognition) app?
Hi I am answering your question assuming the app that you are intending to make is not just restricted to a particular mobile device. You could use Python - use pytesseract package. C++ - use Asprise C++ SDK or tesseract ocr Java - Asprise has Java bindings too. Python C++ and Java have their advantages. Decide for yourself what best suits your purpose! Hope this was helpful.
How do I make a JAVA based OCR?
Have you tried tesseract-ocr - An OCR Engine that was developed at HP Labs between 1985 and 1995... and now at Google. - Google Project Hosting s ?
What are some available free OCR APIs (iOS/Android/REST) for scanning receipts?
Thanks for A2A. There aren't any good receipt scanners that are free. But there are severalprehensive solutions available that are extremely accurate and high performing. You did not mention if you wanted line item extraction or only key field extraction (date amount merchant name etc)? The solution for both are different. In fact from my experience the solutions are very different for US and EU receipts as well. Europe has lesser chains of restaurants etc and more single shop establishments. Plus the VAT rules vary quite a bit. Is your focus US or international geography? A lot of answers have mentioned good range of options. Let me add one more to the list. Particularly if you are looking for European receipts then I would encourage you to look at this and request for trial Enterprise Machine Intelligence | I hope this helps!
What are the best open source OCR libraries?
Tesseract seems pretty goodn s s n Tesseract is probably the most accurate open source OCR engine available. Combined with the Leptonica Image Processing Library it can read a wide variety of image formats and convert them to in over 6 languages. It was one of the top 3 engines in the 1995 UNLV Accuracy test. Between 1995 and 26 it had little work done on it but since then it has been improved extensively by Google. It is released under the Apache License 2..