2. The average MRTD (MRTDav) will be determined from MRTDh and MRTDv as given in Annex B.
3. The MRTDav function must. be transformed into three new functions, which are:
a. the MRTDav as a function of the distance for detection (RDet):
b. the MRTDav as a function of the distance for recognition (RRec);
C. the MRTDav as a function of the distance for identification (Rid):
The change of variable from spatial frequency(r) into range(R) is done by using the following formulae: