![]() Check the barcode scanner manual for reference. Most scanners have several default settings including minimum and maximum characters to scan as well as check digit options. So currently me Image Analyzer builder looks like this, and it works just fine private val analyzerUseCase = ImageAnalysis. NO, it does not scan: Make sure the barcode type is enabled in the barcode scanner, then check the scanner settings for the barcode type being scanned. To do this Open the Camera app Tap on Settings See if the Scan QR codes setting is turned on. Re-enabling the QR scanner can help to fix the glitches that cause it to malfunction. I tried other, smaller resolutions as well, tried on different high and low end devices with good and bad cameras, and came to this resolution, which seems to perform the best. Make sure to check if the QR scanner works after applying each solution. So just changing this default 640x480 to 1920x1440 immediately solved the issue, and the QR code without borders started to be scanned immediately and with very good performance. Ideally, a QR code should have a size-to-scan ratio of 1/10. ![]() The size-to-scan ratio is an effective way to determine the right size for your QR code. T he minimum size should be 2×2 cm (0.8×0.8 in). Solution: Enlarge the QR code generated on the phone or try to use a phone with a screen larger than 4 inches. If your device is unable to run iOS 11 or later, you can download a third-party app to scan QR codes. Your Apple device isn’t running iOS 11 or later. And it's also OK for normal QR codes, but for problematic QRs like this it seems to mess thing up, so ML kit needs a higher resolution images for processing. If your QR code is too small, it may not scan properly. If your iPhone won’t scan a QR code, here are a few possible reasons why: 1. So while building the image analyzer, there is a configuration function to set Target Resolution Size resolution), which if not set explicitly is defaulting to 640x480, which is probably ok for general use cases related to image analyzer (otherwise I wonder why Google should pick this resolution as a default). I found out that the solution is rather simple and was always there right in front of me. ![]() Well, after spending some time on trying to solve this problem with various image processing techniques etc. ![]()
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