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Hello,

I have a question if you can help me about the distance of QR code detection, i am using the code in this link and it's working very well : https://www.learnopencv.com/opencv-qr-code-scanner-c-and-python/

For example if i use a QR code with a dimension (3.5 x 3.5) cm, the scanning distance to detect this QR code is 40 cm, a distance bigger than that i can't detect the QR code.

I calculate this distance and it's close to the theoretical values, i used this relation :

And i find the same result, for a QR code with the size 3.5 cm the scanning distance is 41 cm.

I am using a camera with a resolution 400x600

My question is : there is some application that can read the same QR code (3.5 x 3.5) cm from a long distance than 40 cm, what is the difference between this applications and the function of Opencv, of maybe the problem is the resolution of the camera?

Hello,

I have a question if you can help me about the distance of QR code detection, i am using the code in this link and it's working very well : https://www.learnopencv.com/opencv-qr-code-scanner-c-and-python/

For example if i use a QR code with a dimension (3.5 x 3.5) cm, the scanning distance to detect this QR code is 40 cm, a distance bigger than that i can't detect the QR code.

I calculate this distance and it's close to the theoretical values, i used this relation :

And i find the same result, for a QR code with the size 3.5 cm the scanning distance is 41 cm.

I am using a camera with a resolution 400x600

My question is : there is some application that can read the same QR code (3.5 x 3.5) cm from a long distance than 40 cm, what is the difference between this applications and the function of Opencv, of maybe the problem is the resolution of the camera?

Hello,

I have a question if you can help me about the distance of QR code detection, i am using the code in this link and it's working very well :

https://www.learnopencv.com/opencv-qr-code-scanner-c-and-python/

For example if i use a QR code with a dimension (3.5 x 3.5) cm, the scanning distance to detect this QR code is 40 cm, a distance bigger than that i can't detect the QR code.

I calculate this distance and it's close to the theoretical values, i used this relation :

And i find the same result, for a QR code with the size 3.5 cm the scanning distance is 41 cm.

I am using a camera with a resolution 400x600

My question is : there is some application that can read the same QR code (3.5 x 3.5) cm from a long distance than 40 cm, what is the difference between this applications and the function of Opencv, of maybe the problem is the resolution of the camera?

And thank you.

Hello,

I have a question if you can help me about the distance of QR code detection, i am using the code in this link and it's working very well :

https://www.learnopencv.com/opencv-qr-code-scanner-c-and-python/

For example if i use a QR code with a dimension (3.5 x 3.5) cm, the scanning distance to detect this QR code is 40 cm, a distance bigger than that i can't detect the QR code.

I calculate this distance and it's close to the theoretical values, i used this relation :

And i find the same result, for a QR code with the size 3.5 cm the scanning distance is 41 cm.

The number of rows is : 21

I am using a camera with a resolution 400x600

My question is : there is some application that can read the same QR code (3.5 x 3.5) cm from a long distance than 40 cm, what is the difference between this applications and the function of Opencv, of maybe the problem is the resolution of the camera?

And thank you.