Picasso VS ZXing

Picasso

You can also take a look at Coil, Picasso or Glide which usually have some kind of crossfade animation when the image loads.

Image loading: Glide, Picasso, Coil, Fresco

picasso (Apache 2.0);

PyXing (website here) is supposedly a Python port of the popular Java ZXing library, but the initial and only commit is 6 years old and the project has no readme or documentation whatsoever.

In previous article, we discussed how to construct a command-line barcode and QR code scanning application using Java and Dynamsoft Barcode Reader. In this article, we will create more fancy applications, such as a desktop GUI application and a web application. In addition, we will import ZXing SDK to make a comparison with Dynamsoft Barcode Reader.

Extract the raw barcode from candidate regions: The extraction of barcodes from the candidate regions is being performed with zxing, an open source library which supports many variations of 1D and 2D barcodes.

Since most government software is written in Java, the QR codes on PDF check-in posters are probably being generated with ZXing [1].

[1] https://github.com/zxing/zxing

zxing has an online decoder -- https://zxing.org/w/decode.jspx -- but I've seen it fail so often that I'm wondering whether it's very "strict" / doesn't account for image distortion that much?

Or does the web site use hardcoded settings that are more tweakable in the library?

Huh, interesting -- zxing is in "Maintenance Mode Only": https://github.com/zxing/zxing

I'd be suuuuper interested to know: what's the state of the art in terms of QR decoding, both in terms of decoding speed, amenability to various image distortions, and (which I've always dreamed of) the ability to partially decode a QR code, even if the error correction fails for some parts of it, or even totally? i.e. a very very verbose debugging/decoding mode?