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

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ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONis encoded as a hexadecimal value. As an (unrealistic) example of a 90 degree value:round(65535 * 90 / 360) modulo 65535 equals 16384.This is 4000 when converted to hexadecimal.For encoding angular orientation of an eye not directed toward the camera, see Field17.041: Frontal gaze / GAZ. It may be difficult to estimate rotation using a monocularcamera. In such cases, the rotation uncertainty encoded in Field 17.015: Rotationuncertainty / RAU will be appropriately larger.Figure 18: Coordinate system for eye rotation angleRight eye Left eye8.17.15 Field 17.015: Rotation uncertainty / RAUThis optional field shall indicate the uncertainty in the in-plane eye rotation given in Field17.014: Rotation angle of eye / RAE. This field is mandatory if Field 17.014: Rotationangle of eye / RAE is present. The rotation uncertainty is non-negative and equal to[round (65535 * uncertainty / 180)] 170 . The uncertainty is measured in degrees and is theabsolute value of maximum error. The value “FFFF” indicates that uncertainty isundefined. Note that this is encoded as a hexadecimal value.8.17.16 Field 17.016: Image property code / IPCThis optional field shall contain the image property code. It shall contain threeinformation items.• The first information item is the horizontal orientation code / IHO. Values forHorizontal Orientation shall be one of: “0” for Undefined, “1” for Base, or “2” forFlipped. “Base” orientation refers to images corresponding to the view facing thesubject, where the nasal side of subject’s left eye or outer edge of the subject’sright eye is on the left side of the image. “Flipped” orientation refers to imageswhere the orientation is opposite from that described for “Base”.May, 2013 DRAFT VERSION UPDATE 2013 Page 353
ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSION• The second information item is the vertical orientation code / IVO. Values forVertical Orientation shall be one of: “0” for Undefined, “1” for Base, or “2” forFlipped. “Base” orientation refers to images where the superior (top) edge of theeye is at the top of the image. “Flipped” orientation refers to images where theorientation is opposite from that described for “Base”.• The third information item is the specific scan type / IST. Values for Scan Typeshall be one of: “0” for Undefined and “1” for Progressive. “Progressive”indicates that the image was captured using progressive scanning, in which caseall image lines are generated sequentially.Prior versions of the standard allowed IST “2” for Interlace Frame, or “3” for InterlaceField. These values shall not be used in records claiming conformance to this version ofthe standard. Implementers may want to support interlaced imagery for handling legacyimages. The deprecated values were defined as follows:• “Interlace Frame” indicates that the image was captured using interlacedscanning, in which two fields are generated in sequence, the first composed of oddnumberedlines and the second of even-numbered lines.• “Interlace Field” indicates that the image was captured using interlaced scanning,in which only one field is generated, and then each line is duplicated to produce afull size image.8.17.17 Field 17.017: Device unique identifier / DUIThis is an optional field. See Section 7.7.1.1 for details. All characters marked “A”, “N”or “S” in Table 108 Character encoding set values are allowed.8.17.18 Field 17.019: Make/model/serial number / MMSThis is an optional field. See Section 7.7.1.2 for details.8.17.19 Field 17.020: Eye color / ECLThis is an optional field that shall specify the subject's eye color, or 'XXX' if it isunknown from the image (as is the case with infra-red images). See Section 7.7.11 andTable 17 for details on entering values to this field. Estimating eye color labeling isextremely subjective, and of very limited reliability despite its intuitive use in a policingcontext, for example. Eye color is determined by the amount of melanin pigmentation,and by the spectrum of the incident light and other factors. Eye color has not historicallybeen available to or used by recognition algorithms.8.17.20 Field 17.021: Comment / COMThis is an optional field. See Section 7.4.4 for details.354
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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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