How can I read and decode an image with QR code in R programming? [closed]

Question

How can I read and decode an image with QR code in R programming? I want to transform an image with QR code in text.

R has libraries for generating QR codes as 'package qrcode’ and ‘package qrencoder’. But I need one package or another way for decoding QR code from an image JPG or PNG or BMP or another.

Answer 1

The following image is a QR code of the url for this page (try it out)

To read it, as Wimpel points out, you can try the quadrangle package, which you can install with

library(devtools)

install_github("brianwdavis/quadrangle", INSTALL_opts = "--no-multiarch")

To read the above image, we simply do:

library(quadrangle)

result <- qr_scan("https://i.stack.imgur.com/CrADg.png")$values$value

And we can see the result is correct:

result
#> [1] "https://stackoverflow.com/questions/71592191/how-can-i-read-and-decode-an-image-with-qr-code-in-r-programming/71592356"