QR code not detected (because of lack of contrast?)

[misaki-web]

Here's a QR code not detected by zbarimg:

I've tested a few online readers and they correctly decode the image (note: I don't endorse any of these web sites, I've just tried a few ones randomly):

• https://products.aspose.app/barcode/recognize/qr
• https://online-barcode-reader.inliteresearch.com
• https://www.imgonline.com.ua/eng/scan-qr-bar-code.php

It seems that zbarimg doesn't detect the image because of the contrast. After manually increasing a little bit the contrast (nothing else was edited), zbarimg correctly decodes the image:

I'm reporting the issue since it was detected by other readers I've tested without editing the image.

[maslick]

Hi @misa-ki! I was able to decode this big QR code (both images you provided) with my OSS project named Koder. It is based on zbar 0.23.90 (compiled into WebAssembly). Check out the demo here: https://qr.maslick.tech