You can set the NFIQ 1, 2  Setting through this function and required NFIQ2 Library(NFIQ2.dll) to use this feature

     int IQ = 2; // NFIQ1 value : 0 , NFIQ1(0~100) value: 1,  NFIQ2 value : 2
     
     RS_SetParam(deviceHandle, RealScanSDK.RS_GVAR_FP_QUALITY_MODE, ref IQ);



For the NFIQ2 , the user required the NFIQ2.dll , that need to placed in application path where RS_SDK.dll placed.


Use the RS_GetQualityScore  function to get the NFIQ1 , NFIQ2 values 

In Sample to get the NFIQ1 or NFIQ2 values need to select segment option