EdgeThreshold Property
Syntax
CWIMAQQRSearchOptions.EdgeThreshold
Data Type
Purpose
Specifies the minimum contrast a pixel must have in order to be considered part of a QR code cell edge.
Remarks
The lower this value, the more potential edge candidates the method will examine during the location phase. Setting this value too low will decrease the performance of the method because the method will examine too many potential edge candidates. Setting this value too high may also decrease the performance of the method by removing valid edge candidates, making location require more iterations. Setting this value too high may also cause the method to fail to identify the QR code because all edge candidates are eliminated. The default value is 30.