If the field is the python value 'None', the field is not set, and deleted if already present in the NIST object

Rename the fingerposition code argument, and the processing of the gca and img parameters

Search the IDC for a particular finger because the fingerposition is not necessary located at the IDC position

Patch for the ULWLQMetric information retrieve if the resolution has changed with the self.changeResolution() function

Check for the tag 9.184 for the Morpho plugin get_minutiae() function. If present, the specific decoding function is applied