acknowledgements for ansi/nist-itl 1-2011 - NIST Visual Image ...

ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONitem specifies the octant. For the QUADRANT ridge count algorithms,this information item specifies the quadrant.• The fifth information item (residual / MRS) is optional and is specific tothe OCTANT and EFTS7 ridge count algorithms, specifying the half of theoctant in which the neighboring minutia lies. The residual is 0 if theneighboring minutia lies in the clockwise half of the octant, or 1 if theminutia lies in the counterclockwise half of the octant.8.9.7.27 Field 9.334: EFS no minutiae present / NMINThis optional field indicates whether the analysis determined that no minutiae could bediscerned in the image. If the analysis process has determined that no minutiae could bediscerned in the image, this field shall be set to Y; otherwise, this field will be omitted.See Table 117: Features and Corresponding presence fields .8.9.7.28 Field 9.335: EFS minutiae ridge count confidence / RCCThis field is optional if Field 9.333: EFS minutiae ridge counts / MRC appears in therecord 90 . It is used to indicate confidence in intervening ridge counts between any twopoints. Each ridge count confidence value is represented in a separate data entry(repeating subfield). While primarily used to indicate ridge count confidence betweenminutiae, this confidence measure may also apply to other features such as Core/Deltaridge counts. If this field not used, the default assumption is that the ridge counts weremanually determined. This field provides a means to save state when only a portion ofridge counts have been manually checked. This field consists of six information items:• The first information item (ax / ACX) contains the x coordinates for PointA, in units of 10 micrometers (0.01mm).• The second information item (ay / ACY) contains the y coordinates forPoint A, in units of 10 micrometers (0.01mm).• The third information item (bx / BCX) contains the x coordinates for PointB, in units of 10 micrometers (0.01mm).• The fourth information item (by / BCY) contains the y coordinates forPoint B, in units of 10 micrometers (0.01mm).• The fifth information item (method of ridge counting / MORC) statesthe method by which ridge counts were determined and/or validatedselected from Table 45.• The sixth information item (confidence value / MCV) contains the integerconfidence value for a ridge count from 0 to 99, with 0 indicating noconfidence.90[2013a>] clarification of when the field can appear, even though it it optional [