How Can I Call Or Emulate Google Mobile Vision Api In Google Cloud?

Background: Building on Does google cloud vision OCR support bar code reading?, I want to do offline analysis of PDF417 barcodes using Google Mobile Vision (Barcode API) but access

Solution 1:

I ended up rolling a Google Cloud Function to detect QR codes for images loaded into Google Cloud Storage, which handled the use case where, like you, I would have preferred to use Cloud Vision. You could do something similar with a HTTP Cloud Function that sends over an image, and uses a JS library to read the barcodes.