Issue
Recently I've been doing some kind of Android barcode scanning app. Everything was fine until I realized that the same app made by my friend on IOS is much better at detecting barcodes. Google Mobile Vision API is often wrong, it detects barcodes like "72345...." when a real barcode is "12345..." . Is this a general problem? Are there any solutions?
Sample barcode:
This barcode is detected fine when I keep my device above, but after any small move there is big chance to get incorrect code.
Solution
I found that not using the first match but applying a simple debounce strategy works pretty well. For example I only consider a valid match after a barcode appears in 3 continuous frames.
This can be easily done in a custom Detector<Barcode> that uses a com.google.android.gms.vision.barcode.BarcodeDetector internally.
It slows down detection a bit but makes them more reliable.
Answered By - Jakob
Answer Checked By - Timothy Miller (JavaFixing Admin)
