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

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ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONTable 12 Subject acquisition profiles for fingerprintCAPTURE FAP 10 FAP 20 FAP 30 FAP 40 FAP 45 FAP 50 FAP 60Acquire flatimagesAcquire rolledimagesMinimumscanningresolutionMinimum graylevelsMinimum imagedimensions(w x h)MaximumCompressionRatioCompressionalgorithmSimultaneousnumber of fingersSensorcertificationYes Yes Yes Yes Yes Yes YesNo No No Optional Optional Optional Optional490 ppi –510 ppi490 ppi –510 ppi490 ppi –510 ppi490 ppi –510 ppi495 ppi –505 ppi495 ppi –505 ppi256 256 256 256 256 256 256495 ppi –505 ppi.5” x .65” .6” x .8” .8” x .1.0” 1.6” x 1.5” 1.6” x 1.5” 2.5” x 1.5” 3.2” x 3.0”10:1 10:1 10:1 15:1 15:1 15:1 15:1WSQVersion 2.0or aboveWSQVersion 2.0or aboveWSQVersion 2.0or aboveWSQVersion 2.0or aboveWSQVersion 2.0or aboveWSQVersion 3.1or above1 1 1 1 to 2 1 to 2 1 to 3 1 to 4WSQVersion 3.1or abovePIV PIV PIV PIV Appendix F Appendix F Appendix F7.7.5.3 Subject acquisition profile for iris / IAPThe profile levels for iris acquisition, which were new for the 2011 version of thestandard, are optional and are based on those listed in the Mobile ID Best PracticeRecommendation (BPR) (See Annex I: Bibliography) with some modifications, asdescribed here. Table 13 shows the relevant characteristics from the BPR that differ byIAP level.They are entered in Field 17.031: Subject acquisition profile – iris / IAP. The BPRwas developed prior to the 2011version of the standard. This version of the ANSI/NIST-ITL standard reflects research associated with the IREX study (See Annex I:Bibliography) which was performed after the release of the BPR. There has also been anupdate to the ISO/IEC 19794-6 standard referenced in the BPR, based on the IREX study.Margin requirements have been updated in the ISO and ANSI/NIST-ITL standards (SeeTable 91 Iris storage formats). The margins stated in the BPR do not apply whenreferring to a particular subject acquisition profile level for iris images in this standard.The storage format specified in the BPR for all profile levels is 'Raw' as specified inISO/IEC 19794-6 and Record Type-17 of the ANSI/NIST-ITL standard. 'Raw'corresponds to ISF code level 2 and has dimensions 640 x 480. This is the size output bymost deployed iris acquisition systems. It is the display resolution for the Video GraphicsArray (VGA).There is a minimum iris diameter stated in the BPR for each profile level. There is nofixed requirement for iris diameter for specifying the format level in Field 17.032: Irisstorage format / ISF. The iris diameter requirements of the BPR shall be adhered to ifMay, 2013 DRAFT VERSION UPDATE 2013 Page 77
ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONthe IAP level is specified in the Type-17 record.Table 13 Subject acquisition profiles for irisCAPTURE IAP 20 IAP 30 IAP 40Iris diameter in true, non-upscaled pixels > 140 pixels > 170 pixels > 210 pixelsNumber of (quasi-) simultaneously captured eyes > 1 > 1 2Exposure time < 33 ms < 15 ms < 10 ms7.7.6 ResolutionMany of the record types in this standard include images as the data field. Each imageformatted in accordance with this standard shall appear to have been captured in anupright position and approximately centered horizontally in the field of view. Thescanning sequence (and recorded data) shall appear to have been from left-to-right,progressing from top-to-bottom. For the purpose of describing the position of each pixelwithin an image to be exchanged, a pair of reference axes shall be used. The origin of theaxes, pixel location (0,0), shall be located at the upper left-hand corner of each image.The x-coordinate (horizontal) position shall increase positively from the origin to theright side of the image. The y-coordinate (vertical) position shall increase positively fromthe origin to the bottom of the image.Many of the record types in this standard use the term “resolution”, in the record typename, field names or in the text describing characteristics about the fields. Generally, theusage shares the commonality of describing pixels per unit of measure. In many cases, aqualifier is used before the term, such as “scanning” resolution or “transmitting”resolution.All record types containing images are variable resolution except for Type-4, which has afixed resolution. Record Type-4 shall not be used for anything but the 500 ppi class. Thescanner resolution is specified for Record Types 10, 13, 14, 15, 16, 17, 19 and 20 usingScanned horizontal pixel scale / SHPS (See Section 7.7.8.7) and Scanned verticalpixel scale / SVPS (See Section 7.7.8.8.) These Record Types can handle all resolutions,500 ppi and above, and are thus variable-resolution image records.Record Type-7 does not include a field to specify resolution. In previous versions, Field1.011 Native scanning resolution / NSR and Field 1.012 Nominal resolution / NTRapplied to Record Type-4 and Record Type-7: User-defined image record. In thisversion, NSR and NTR only apply to Record Type-4: Grayscale fingerprint image,unless specifically stated otherwise in a domain's specifications. This allows users to usedifferent resolutions for the Type-7 record. Since Type-7 records are user-defined, thesender and receiver must exchange information concerning the resolution of the data. Inmany cases, it is contained in the data record headers.As used within this standard, and consistent with the definitions in Section 4, thefollowing categorization of terms related to resolution is provided to assist the reader inclearly understanding and interpreting these terms:78
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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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