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

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ANSI/<strong>NIST</strong>-ITL 1-<strong>2011</strong> - UPDATE 2013 DRAFT VERSION8.20.21 Field 20.021: Source representation number / SRNThis mandatory field contains a reference number <strong>for</strong> the source representation stored in thisrecord. Note that the segment references are contained in Field 20.016: Segments / SEG ifthey exist. The value <strong>for</strong> SRN in Field 20.021 corresponds to the SRN that may bereferenced as the first in<strong>for</strong>mation item in the SOR field of other Record Types. See Section7.3.2. The SRN is a positive integer that uniquely refers to a particular instance of RecordType-20. It is an integer, numbered sequentially beginning at one and incremented <strong>for</strong> eachinstance of Record Type-20.8.20.22 Fields 20.100-900: User-defined fields / UDFThe size and content shall be defined by the user and be in accordance with the receivingagency.8.20.23 Field 20.902: Annotation in<strong>for</strong>mation / ANNThis optional field, listing the operations per<strong>for</strong>med on the original source in order to prepareit <strong>for</strong> inclusion in a biometric record type. See Section 7.4.1.8.20.24 Field 20.903: Device unique identifier / DUIThis is an optional field. See Section 7.7.1.1 <strong>for</strong> details. All characters marked “A”, “N” or“S” in Table 108 Character encoding set values are allowed.8.20.25 Field 20.904: Make/model/serial number / MMSThis is an optional field. See Section 7.7.1.2 <strong>for</strong> details.8.20.26 Field 20.993: Source agency name / SANThis is an optional field. It may contain up to 125 Unicode characters. It is the name of theagency referenced in Field 20.004: Source agency / SRC.8.20.27 Field 20.994: External file reference / EFRThis conditional field shall be used to enter the URL / URI or other unique reference to astorage location <strong>for</strong> all source representations, if the data is not contained in Field 20.999.2D still images shall not be referenced to an external file. For 2D images, they shall beincluded in this record in Field 20.999: Source representation data / DATA.If this field is used, Field 20.999 shall not be set. However, one of the two fields shall bepresent in all instances of this record type. A non-URL reference might be similar to: “Case2009:1468 AV Tape 5”. It is highly recommended that the user state the <strong>for</strong>mat of theexternal file in Field 20.020: Comment / COM .8.20.28 Field 20.995: Associated context / ASC404

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