Need help in creating QR scanner app using MATLAB app designer

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Alexandrei Felice 2022-12-17

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https://ww2.mathworks.cn/matlabcentral/answers/1880227-need-help-in-creating-qr-scanner-app-using-matlab-app-designer

评论： Phan Cuong 2024-7-17，14:10

Hi!

I'm new to MatLab and I'm trying to create an app that reads barcodes or QR codes. What it does is basically read barcodes and QR codes using a webcam and display the output in a text area. The script worked when I used it on a command window.

Now I need to apply in on an app, the files are attached here. When I tried to run the app I get an error that says "Error using disp, too many output arguments". I have spent hours trying to find a solution but can't find any.

clc;
cam=webcam(1);
preview(cam);
while(1)
    img=snapshot(cam);
    msg=readBarcode(img);
    disp(msg);
end
No webcams have been detected. Please ensure the webcam is connected to the system.