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

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ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSION8.8.1 Field 8.001: Record headerThe content of this mandatory field is dependent upon the encoding used. See therelevant annex of this standard for details. See Section 7.1.8.8.2 Field 8.002: Information designation character / IDCThis mandatory field shall contain the IDC assigned to this Type-8 record as listed in theinformation item IDC for this record in Field 1.003 Transaction content / CNT. SeeSection 7.3.1.8.8.3 Field 8.003: Signature type / SIGThis mandatory field shall contain 0 for the signature image of the subject, or 1 for thesignature image of the official processing the transaction.8.8.4 Field 8.004: Signature representation type / SRTThis mandatory field shall be 0 if the image is scanned and not compressed, a 1 if theimage is scanned and compressed, and 2 if the image is vector data.8.8.5 Field 8.005: Image scanning resolution / ISRThis mandatory field shall contain 0 if the scanned and transmitted image resolution iswithin the range of 19.49 ppmm (495 ppi) to 19.89 ppmm (505 ppi). A value of 1indicates a different, unreported, image resolution 55 . A value of 0 shall also be used if theimage is vector data.8.8.6 Field 8.006: Horizontal line length / HLLThis mandatory field shall be used to specify the number of pixels contained on a singlehorizontal line of the transmitted signature image. For vectored signature data, the valueshall be zero. See Section 7.7.8.1.8.8.7 Field 8.007: Vertical line length / VLLThis mandatory field shall be used to specify the number of horizontal lines contained inthe transmitted signature image. For vectored signature data, the value shall be zero. SeeSection 7.7.8.2.8.8.8 Field 8.008: Signature image data / DATAThis mandatory field shall contain uncompressed scanned image signature data,compressed scanned image signature data, or vectored image signature data. The entrycontained in the SRT field shall indicate which form of the signature data is present.55In previous versions of the standard, a 0 indicated the 'minimum scanning resolution' and a 1 indicatedthe native scanning resolution. Native scanning resolution was defined in Field 1.011 Native scanningresolution / NSR as applying only to Types 3 through 7. This change of language is to make clear that thevalue of 1 does not relate to the contents of Field 1.011. Field 1.011 applies only to Type-4 data.May, 2013 DRAFT VERSION UPDATE 2013 Page 113
ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSION8.8.8.1 Uncompressed scanned image dataIf the SRT field contains the value of zero, then this field shall contain the uncompressedscanned binary image data for the signature. In uncompressed mode, the data shall bepacked at eight pixels per byte.8.8.8.2 Compressed scanned image dataIf the SRT field contains the value of one, then this field shall contain the scanned binaryimage data for the signature in compressed form using the ANSI/EIA-538-1988 facsimilecompression algorithm.8.8.8.3 Vectored image dataIf the SRT field contains the value of two, then this field shall contain a list of vectors thatdescribes the pen position. Each vector has three parts.· The first part is an X coordinate value (horizontal).· The second part is a Y coordinate value (vertical).· The third part is the pen pressure value of line segments within thesignature.Both the X and Y coordinates shall be expressed in units of .0254 mm (.001 inches)referenced from the bottom leftmost corner of the signature. Positive values of X shallincrease from left-to-right and positive values of Y shall increase from bottom-to-top.The pen pressure shall be a constant value until the next vector becomes active. A value orpressure of 0 shall represent a “pen-up” (or no pressure) condition. The value of 1 shallrepresent the least recordable pressure for a particular device, while 254 shall represent themaximum recordable pressure for that device. To denote the end of the vector list, 255 shallbe inserted in this entry.114
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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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