ANSI/NIST-ITL 1-2011 - NIST Visual Image Processing Group ...

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ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic Information13.9.47 EFS Field 9.340 Dots / DOTIf the analysis process has determined that no dots could be discerned in theimage, this field shall be set to Y.Otherwise, this field will be omitted.13.9.48 EFS Field 9.347 No Incipient Ridges Present / NIRThis optional field is used to indicate whether the analysis process hasdetermined that no incipient ridges (Field 9.341 Incipient Ridges / NIR) could bediscerned in the image:If the analysis process has determined that no incipient ridges could bediscerned in the image, this field shall be set to Y.Otherwise, this field will be omitted.13.9.49 EFS Field 9.348 No Creases Present / NCRThis optional field is used to indicate whether the analysis process hasdetermined that no creases (Field 9.342 Creases and Linear Discontinuities /CLD) could be discerned in the image:108If the analysis process has determined that no creases could be discerned inthe image, this field shall be set to Y.Otherwise, this field will be omitted.13.9.50 EFS Field 9.349 No Ridge Edge Features Present / NREThis optional field is used to indicate whether the analysis process hasdetermined that no ridge edge features (Field 9.343 Ridge Edge Features /REF) could be discerned in the image:If the analysis process has determined that no ridge edge features could bediscerned in the image, this field shall be set to Y.Otherwise, this field will be omitted.13.9.51 EFS Field 9.350 Method of Feature Detection / MFDThis field states the method(s) by which the Extended Friction Ridge featureswere detected and/or edited. Each time that fields are created or modified, theDRAFT 2
ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic Informationdate and name of the automated algorithm or human examiner is noted in a newdata entry in this field. 42 This field consists of nine information items:• The first information item (Field / FIE) indicates which fields correspond tothe method noted: it contains a single field (e.g. “9.331”), a commaseparatedlist of fields without spaces (e.g. “9.340, 9.341, 9.343”), or“ALL”.• The second information item (Method / FME) states the method by whichthe fingerprint features were detected and encoded, from Table 34.• The third information item (Algorithm vendor / FAV) identifies the vendorof the encoding algorithm. 43• The fourth information item (Algorithm / FAL) shall identify the algorithmby name and version. 44• The fifth information item (Examiner last name / ELN) shall contain thesurname (last name) of the fingerprint examiner, for methods other than“AUTO”• The sixth information item (Examiner first name / EFN) shall contain thefirst name (given name, or first and middle names) of the fingerprintexaminer• The seventh information item (Examiner affiliation / EAF) shall containthe employer or organizational affiliation of the examiner, for methodsother than “AUTO”• The eighth information item (Date and Time / EMT) shall contain the dateand time that the determination was made, using Greenwich Mean Time(GMT).• The ninth information item (Notes / NTS) is an optional item that maycontain free text with additional information regarding the detection ormodification of features.42When features are created or edited on multiple occasions, the new data entries should be added to this field withoutdeleting the original data entries. For example, if minutiae are manually encoded by an examiner, then subsequently asecond examiner modifies the minutiae, there would be two “MAN” entries for the Minutiae field (9.331)••43 This applies for methods other than “MAN”. If the algorithm is registed with the IBIA, this information itemshall contain the prefix “IBIA” followed by the vendor’s hexadecimal IBIA vendor ID. If an IBIA ID is not available, thisshall just contain the name of the vendor or organization.•44 This applies for methods other than “MAN. If the algorithm is registered with the IBIA, this information itemshall contain the prefix “IBIA” followed by the hexadecimal IBIA product type ID.109DRAFT 2
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