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

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ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONFinger position Finger Min Width Min Heightcode (mm) (in) (mm) (in)Right middle/ring/little 48 63.5 2.5 38.1 1.5Left index/middle/ring 49 63.5 2.5 38.1 1.5Left middle/ring/little 50 63.5 2.5 38.1 1.57.7.4.3 Print (or search) position descriptors / PPD or SPDThese fields are used to define fingerprints that include all or part of the lower joints (medialor proximal segments), or extreme tips.For exemplar fingerprints contained in Type-14 records, if the impression is known to be anentire joint image (EJI), full finger view (FFV), or extreme tip (TIP), then Field 14.013:Friction ridge generalized position / FGP shall be set to 19, and Field 14.014: Printposition descriptors / PPD shall be specified; Field 14.015: Print position coordinates /PPC may be (optionally) specified.For latent prints contained in Type-13 records, if all or part of the impression should becompared against the medial or proximal segments or the extreme tips, then Field 13.013:Friction ridge generalized position / FGP shall be set to 19, and Field 13.014: Searchposition descriptors / SPD shall be specified; Field 13.015: Print position coordinates /PPC may be (optionally) specified.Figure 3 and Figure 4 illustrate the positions of the distal, medial and proximal portions ofa finger. Table 9 lists the finger views (FV1 through FV4) shown in Figure 4. The positiondescriptor, in Field 13.014: Search position descriptors / SPD or Field 14.014: Printposition descriptors / PPD contains two mandatory information items:• For a Type-13 record (latent prints), the first information item (probable decimalfinger position code / PDF) (0-10, 16 or 17) is taken from Table 8. A “0” indicatesthat all the fingers of a possible candidate should be searched. For a Type-14 record(known exemplars), the first information item is the decimal finger position code /DFP. It is also taken from Table 8 with a value of 1 to 10, inclusive or 16 or 17.• The second information item (finger image code / FIC) is the code taken fromTable 9 to indicate the portion of the database to search. Full-length finger jointimages use codes FV1 through FV4. Figure 4 is an illustration of the Entire JointImage for a middle finger with each of the full finger views and constituent partsidentified. Multiple portions of the EJI may be listed in a separate subfield.Field 13.014: Search position descriptors / SPD, Field 14.014: Print positiondescriptors / PPD, Field 13.015: Print position coordinates / PPC and Field 14.015:Print position coordinates / PPC are included to make the standard flexible enough toaccommodate many different scenarios and applications. These fields facilitate searching oflatents formatted within Type-13 records against Type-14 records contained in the variousdatabases. The search of a database by a latent can be narrowed with the use of additionalMay, 2013 DRAFT VERSION UPDATE 2013 Page 67
ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONinformation such as finger position, finger segment, or full finger view. It is unlikely that anentire EJI will ever be left at the scene of a crime. But a latent may be searched against theEJIs based on a specific finger segment or full finger view. This may be accomplished for aportion of the latent described by the X and Y coordinates.Multiple portions of the EJI may be listed, each as a subfield with the same value forPDF and a different value for FIC, such as one subfield with PDF of 2 and FIC of DSTand another subfield with PDF of 2 and FIC of MED. There need not be more than onesubfield. For latents in Type-13 records, Field 13.014: Search position descriptors /SPD defines the set of all areas against which the latent should be compared. To indicatethat the latent may have come from any part of the finger, FIC should include both EJIand TIP (in different subfields). Since EJI is a superset of FV1-FV4, DST, MED andPRX, it is therefore redundant to specify any of the latter if EJI is included in FIC. If alatent in a Type-13 record is to be compared against different segments of a finger butcan be specified more precisely than simply listing EJI, multiple portions of the EJI maybe listed – in which the information item FIC indicates the appropriate area of the field.One subfield may, for example, have a PDF of 0 and FIC of DST and another subfieldwith PDF of 0 and FIC of MED. It is possible to include any combination of PDF andFICs, such as: PDF = 2 and FIC = MED; PDF = 2 and FIC = DST; PDF = 3 and FIC =MED; and PDF = 3 and FIC = DST.7.7.4.4 Print position coordinates / PPCIf Field 13.013: Friction ridge generalized position / FGP or Field 14.013: Frictionridge generalized position / FGP is set to 19 then Field 13.015: Print positioncoordinates / PPC or Field 14.015: Print position coordinates / PPC may optionallycontain offsets to the locations for the bounding box of the EJI, each of the full finger views,or segments within the EJI. When used, this field shall consist of six (6) mandatoryinformation items describing the type or portion of the image contained in this record and itslocation within an EJI. This information will describe either the location of the entire jointimage, one full finger view, or segment. Individual full finger or segment definitions maybe repeated as repeating sets of information items:• The first information item is the full finger view / FVC with values of “FV1”through “FV4”. Values of “FV1” to “FV4” specify the perspective for each fullfinger view. For a fingertip, the first information item shall be “TIP”. FVC willcontain the code “NA” if only a proximal, distal or medial segment is available.• The second information item is used to identify the location of a segment / LOSwithin a full finger view. LOS will contain the not applicable code “NA” if theimage portion refers to a full finger view, tip or to the entire joint image locations.Otherwise, it shall contain “PRX”, “DST”, “MED” for a proximal, distal, or medialsegment, respectively.• The third information item is the left horizontal coordinate / LHC. It is thehorizontal offset in pixels to the left edge of the bounding box relative to the originpositioned in the upper left corner of the image.68
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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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