How to generate QR code of image in MATLAB R2019b.
31 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Balkar Singh
am 16 Mär. 2021
Kommentiert: Balkar Singh
am 8 Dez. 2022
I want to generate QR code of document image in MATLAB.
Please help
Thanks in advance
4 Kommentare
Walter Roberson
am 17 Mär. 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.
Akzeptierte Antwort
Walter Roberson
am 17 Mär. 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 Kommentare
ejs
am 7 Dez. 2022
Bearbeitet: Walter Roberson
am 7 Dez. 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.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Startup and Shutdown finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!