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

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ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSION8.14.20 Field 14.021: Finger segment position / SEGThis optional field shall contain offsets to the locations of image segments containing theindividual fingers within the flat images of simultaneous fingers from each hand or the twosimultaneous thumbs. This field shall only be present if FGP = 13, 14, 15 or 40-50 fromTable 8 as entered in Field 14.013: Friction ridge generalized position / FGP. Thesubfield occurs at least once, and may be repeated if more than one algorithm is used tosegment the image. Each subfield contains five information items.• The first information item is the friction ridge segment position / FRSPwith values of 1 to 10 or 16 or 17, selected from Table 8. This informationitem is called the friction ridge segment position / FRSP to differentiate itfrom FGP.• The second information item is the left horizontal coordinate value / LHC.It is the horizontal offset in pixels to the left edge of the bounding boxrelative to the origin positioned in the upper left corner of the image.• The third information item is the right horizontal coordinate value / RHC.It is the horizontal offset in pixels to the right edge of the bounding boxrelative to the origin positioned in the upper left corner of the image.• The fourth information item is the top vertical coordinate value / TVC isthe vertical offset (pixel counts down) to the top of the bounding box.• The fifth information item is the bottom vertical coordinate value /BVC. It is the vertical offset from the upper left corner of the image downto the bottom of the bounding box. It is counted in pixels.8.14.21 Field 14.022: NIST quality metric / NQMThis optional field shall contain the NIST Fingerprint Image Quality (NFIQ) scores forthe individual finger(s) derived from the slap impressions or individual rolledfingerprints. It consists of two information items.• The first item is the friction ridge NIST quality position / FRNP betweenone and ten or 16 or 17, as chosen from Table 8. This information item iscalled the friction ridge NIST quality position / FRNP to differentiate itfrom FGP.• The second item is the NIST image quality score / IQS which is aquantitative expression of the predicted AFIS matcher accuracy performanceof the fingerprint image. The scores range from “1” for the best qualityimage, to “5” for the worst quality image. A “254” indicates that no scorewas ever computed while an entry of “255” shall indicate a failed attempt tocalculate the image quality metric.May, 2013 DRAFT VERSION UPDATE 2013 Page 321
ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSION8.14.22 Field 14.023: Segmentation quality metric / SQMThis optional field provides a measure of estimated correctness regarding the accuracy ofthe location of the segmented finger within the right or left four finger image (which mayinclude extra digits, if applicable) or the two thumb image. A subfield shall exist for eachsegmented finger. Each subfield consists of four information items.The first information item is the friction ridge segment quality position / FRQP betweenone and ten or 16 or 17, as chosen from Table 8. This information item is called thefriction ridge segment quality position / FRQP to differentiate it from FGP. SeeSection 7.7.7 for the other information items. The FRQP values shall be in the list ofeither the FRSP or FRAS values contained in this record.8.14.23 Field 14.024: Fingerprint quality metric / FQMThis optional field shall specify one or more different metrics of fingerprint image qualityscore data for the image stored in the record. A subfield shall exist for each segmentedfinger in the image. Each subfield consists of four information items.The first information item is the friction ridge metric position / FRMP between one andten or 16 or 17, as chosen from Table 8. This information item is called the frictionridge metric position / FRMP to differentiate it from FGP. For information on the otherthree information items, see Section 7.7.7.8.14.24 Field 14.025: Alternate finger segment position(s) / ASEGThis optional field is an alternate approach to describing the locations for each of theimage segments of each of the individual fingers within a flat image containing thecapture of four (or more if extra digits exist on the hand) simultaneous fingers or twosimultaneous thumbs. This field uses an n-vertex polygon to encompass each fingerimage segment, where “n” is between 3 and 99. A minimum of three points is required todescribe a finger location. The order of the vertices shall be in their consecutive orderaround the perimeter of the polygon, either clockwise or counterclockwise. No twovertices may occupy the same location. The polygon side defined by the last vertex andthe first vertex shall complete the polygon. The polygon shall be a simple, plane figurewith no sides crossing and no interior holes.This field shall consist of up to five subfields: the segmentation for each finger isrepresented in a different subfield. The first information item ( friction ridge alternatesegment position / FRAS) is the finger number from Table 8. This information item iscalled the friction ridge alternate segment position / FRAS to differentiate it fromFGP. See Section 7.7.12. The number of information items within each subfield dependson the number of vertices.8.14.25 Field 14.026: Simultaneous capture / SCFThis optional field allows the user to link together fingerprint images that were capturedsimultaneously. Note that this is different from the IDC. This is used, for instance, whenindividual flat prints are captured on different platens simultaneously. Such imagesshould not be stitched together for transmission as a single multiple-finger print image,but they should be coded with the same SCF value to indicate that they were captured322
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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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