AN2K2IAF 1C 02 April 2001 NIST NFIS Reference Manual an2k2iaf Modifies minutiae and fingerprint image records in an ANSI/NIST 2000 file to meet FBI/IAFIS specifications. an2k2iaf <filein><fileout> An2k2iaf parses a standard compliant ANSI/NIST-ITL 1-2000 file and, if necessary, converts specific records and fields to meet FBI/IAFIS specifications. Please note that this utility does not exhaustively validate the output to ensure compliant FBI/IAFIS transactions, rather it focuses on the format of minutiae and image records. Minutiae fields: When a Type-9 record is encountered in the input file, this utility checks to see which fields are populated. If the NIST-assigned fields 5-12 are populated, but the FBI/IAFIS-assigned fields 13-23 are empty, then the FBI/IAFIS fields are populated by translating the data recorded in the NIST fields, and the NIST fields are removed. Image records: FBI/IAFIS specifications (EFTS V7) require binary field images; therefore, this utility looks for tagged field fingerprint records and converts them appropriately. If a Type-13 or Type-14 record is encountered, it is inspected to determine if the image is bi-level or grayscale and to see what scan resolution and image compression was used. Records containing bi-level images scanned at 19.69 ppmm (500 ppi) and either WSQ-compressed or uncompressed are converted to Type-6 records; records containing grayscale images scanned at 19.69 ppmm and either WSQ-compressed or uncompressed are converted to Type-4 records; otherwise, the tagged field image record is ignored. <file in> the ANSI/NIST file to be converted <file out> the resulting ANSI/NIST file From test/an2k/execs/an2k2iaf/an2k2iaf.src: % an2k2iaf ../../data/nist.an2 iafis.an2 iaf2an2k(1C), mindtct(1B) NIST/ITL/DIV894/Image Group