How to generate QR code of image in MATLAB R2019b.
31 views (last 30 days)
Show older comments
Balkar Singh
on 16 Mar 2021
Commented: Balkar Singh
on 8 Dec 2022
I want to generate QR code of document image in MATLAB.
Please help
Thanks in advance
4 Comments
Walter Roberson
on 17 Mar 2021
The largest QR code is too small to hold that image. However it might be the case that it could fit a compressed version of the image.
Accepted Answer
Walter Roberson
on 17 Mar 2021
filename = 'Tu_logo.png';
[fid, msg] = fopen(filename, 'r');
if fid < 0
error('could not open file "%s" because "%s"', msg)
end
bytes = fread(fid, 'uint8=>char', [1 inf]);
fclose(fid);
qr_array = encode_qr(bytes, [160 160]);
12 Comments
ejs
on 7 Dec 2022
Edited: Walter Roberson
on 7 Dec 2022
Hi folks, the Guilty is here,
The updated code, https://se.mathworks.com/matlabcentral/fileexchange/41437-qr-code-encoder is based on the https://se.mathworks.com/matlabcentral/fileexchange/29239-qr-code-encode-and-decode with these differencies (if I recall correctly): UTF-8 as default character set; possibility to specify size of the message, as we needed the fixed dimensions of the QR code; possibility to alter error correction. It's all in the header.
An no, to my understanting it does not use neither Image Processing toolbox, nor has somenting in common with 3D scene control. Not sure how the categories are assigned in the Fileexchange.
I can't recall the exact procedure of specifyining the ZXing libraries. As ZXing written Java, the same as Matlab, there was some simple procedure to add then to the path. If anyone is still interested in it, I can try to restore the procedure.
Again, it was 12 years ago, there was no online QR services at that time.
More Answers (0)
See Also
Categories
Find more on Startup and Shutdown in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!