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

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ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONcontains the uncertainty of the direction of the core, in non-negative integerdegrees. Valid values range from “0” to “180”: a value of “0” (default)indicates a certain direction, while a value of “180” indicates an unknownorientation.Figure 8: Placement of the core at the focus of the innermost recurving ridgelineFigure 9: Examples of core locations for a double loop whorl, plain whorl, tented arch,and central pocket loop whorl8.9.7.17 Field 9.321: EFS deltas / DELFor fingerprints, one or more deltas are defined for all pattern classifications other thanplain arches, as shown in Table 40. For palmprints or other non-fingerprint friction ridgeimages, any number of delta-like patterns may be defined using this field if suchstructures are present. Each delta is defined in a separate subfield. For more informationabout this field, see Annex F F.6.3.1 Field 9.321: EFS deltas / DEL instructions .When no deltas are present, this field shall not be used. See Table 117: Features andCorresponding presence fields .Each subfield consists of the following information items:• The first information item (‘x’ coordinate / DXC) is expressed in units of 10micrometers (0.01mm) and is mandatory.• The second information item (‘y’ coordinate / DYC) is expressed in units of10 micrometers (0.01mm) and is mandatory.• The third information item (direction up / DUP) is optional and is expressedMay, 2013 DRAFT VERSION UPDATE 2013 Page 157
ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONin degrees counterclockwise from the right 87 .• The fourth information item (direction left / DLF) is optional and isexpressed in degrees counterclockwise from the right 87 .• The fifth information item (direction right / DRT) is optional and isexpressed in degrees counterclockwise from the right 87 .• The sixth information item (type / DTP) is optional and contains the type ofdelta, as defined in Table 40.• The seventh information item (radius of position uncertainty / RPU) isoptional. It defines the radius of a circle centered at the location (X,Y) of thedelta; the circle is sized to include the area of other possible locations of thedelta, if the precise location cannot be determined (such as due to poorclarity). If the location is known precisely, the radius of position uncertaintymay be omitted or set to 0. The radius of uncertainty is measured in integerunits of 10 micrometers (0.01mm), and may overlap the edge of the image.• The eighth information item (direction uncertainty up / DUU) isoptional. It contains the uncertainty of the delta angle up. Valid valuesrange from “0” to “180”: a value of “0” (default) indicates a certaindirection, while a value of “180” indicates an unknown orientation.• The ninth information item (direction uncertainty left / DUL) is optional.It contains the uncertainty of the delta angle up. Valid values range from“0” to “180”: a value of “0” (default) indicates a certain direction, while avalue of “180” indicates an unknown orientation.• The tenth information item (direction uncertainty right / DUR) isoptional. It contains the uncertainty of the delta angle up. Valid valuesrange from “0” to “180”: a value of “0” (default) indicates a certaindirection, while a value of “180” indicates an unknown orientation.Table 40 EFS delta codes87. The three angles shall be reported in order by increasing angle, which for fingerprint deltas with knownorientation will result in the order up, left, then right. These three information items may be omitted (leftempty).158
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NIST Special Publication 500-xxxANS
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5.3.18 Type-18 records ............
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8.1.4 Field 1.004 Type of transacti
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8.9.7.18 Field 9.322: EFS core delt
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8.11 Record Type-11: Forensic and i
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8.14.2 Field 14.002: Information de
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8.17 Record Type-17: Iris image rec
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8.19.24 Field 19.902: Annotation in
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8.24.6 Field 99.101: Biometric type
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F.6.3 Reference points.............
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Figure 34: Palm with carpal delta a
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Table 31 Off-center fingerprint pos
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Table 95 DNA sample cellular types.
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Type-11:A new record type introduce
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ACKNOWLEDGEMENTS FOR ANSI/NIST-ITL
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Will Graves, Rob Mungovan, Catherin
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John ManzoFBI/BIOMETRICS Center ofE
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General Editor: Brad Wing[2013a>]AC
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CANVASSEES For the 2013 UpdateTO BE
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ANSI/NIST-ITL 1-2011 - UPDATE 2013
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