https://getintopc.com/?s=OCR https://blog.vietnamlab.vn/ocr-voi-google-vision-api/ https://programminghistorian.org/en/lessons/ocr-with-google-vision-and-tesseract Cấu hình camera: https://drive.google.com/open?id=19z35JJo5iCgRPWwfilq87rLtLBI7r7rZ&usp=drive_fs
