How to generate QR code of image in MATLAB R2019b.
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Balkar Singh
el 16 de Mzo. de 2021
Comentada: Balkar Singh
el 8 de Dic. de 2022
I want to generate QR code of document image in MATLAB.
Please help
Thanks in advance
4 comentarios
Walter Roberson
el 17 de Mzo. de 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.
Respuesta aceptada
Walter Roberson
el 17 de Mzo. de 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 comentarios
ejs
el 7 de Dic. de 2022
Editada: Walter Roberson
el 7 de Dic. de 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.
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