ISO/IEC 29794-4:2017, Section 5.1.4.2 states that the first/last occurrence where mu <= MU_THRESHOLD should be the first/last row/column in the image. We, however, set the top/left/bottom/right index to the index where the last occurrence of mu > MU_THRESHOLD, off by one row/column. When there is a single white row/column surrounding the image, it will not be cropped.
Fix by always setting the index to the loop iterator, such that the width and height are later calculated correctly.
(Submitted on behalf of the MITRE MTF and IQS Assessment team.)
https://github.com/usnistgov/NFIQ2/blob/e6b40e7b3831d934cf84bcfd3baf106113e53a46/NFIQ2/NFIQ2Algorithm/src/nfiq2/nfiq2_fingerprintimagedata.cpp#L87
ISO/IEC 29794-4:2017, Section 5.1.4.2 states that the first/last occurrence where
mu <= MU_THRESHOLDshould be the first/last row/column in the image. We, however, set the top/left/bottom/right index to the index where the last occurrence ofmu > MU_THRESHOLD, off by one row/column. When there is a single white row/column surrounding the image, it will not be cropped.Fix by always setting the index to the loop iterator, such that the width and height are later calculated correctly.
(Submitted on behalf of the MITRE MTF and IQS Assessment team.)