We need to develop an OCR engine that can convert receipt images to structured text. For example from an invoice we would want to extract - Merchant Name, Date, Invoice Number, Line items, Total price, Discount etc. These receipts would be uploaded by end users from their mobile devices (Android & IOS). So are open to build either SDKs that can OCR within the mobile app or once the image is available at backend server then also we can OCR it. Would like to discuss options and best possible way to achieve the end result.