Yup, it was solid but not as good as AWS out of the box. IIRC preprocessing the image did help, but I didn't have enough time to spend on fleshing that out for an MVP. (I gave up on the project when I realised that recently introduced protection of personal information laws in my country would have made this project too risky to continue work on. The intention was to automatically extract spending habits from receipts to improve personal finance management.)