Will minimize the quite zone lower the decode rate of the qr code?

[齐士垚]

I want to know the fuction of the quite zone, besides it's the remainder of pixels, will minimize it will lower the decode rate as some issues posted on StackOverflow. Thanks in advance.

[Bas Vijfwinkel]

On Tuesday, March 14, 2017 at 5:46:20 PM UTC+9, 齐士垚 wrote:
> I want to know the fuction of the quite zone, besides it's the remainder of pixels, will minimize it will lower the decode rate as some issues posted on StackOverflow. Thanks in advance.

The QR decoder searches for the 3 corner markers first.
This is where the quiet zone comes into play. If it is too small, the corner marker detection will fail.
Besides the size of the whitespace outside of the QR code, it's also a matter of which colours are used for the background. The more distinction there is the better the recognition rate will be (that's why QR codes are usually in black and white).

When the decoder finds those 3 markers, it determines where the contents of the QR code is expected to be.
The contents is inside the corner markers so it should not have much influence from the size of the quiet zone.