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

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ANSI/<strong>NIST</strong>-ITL 1-<strong>2011</strong> - 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 <strong>for</strong> details. See Section 7.1.8.8.2 Field 8.002: In<strong>for</strong>mation designation character / IDCThis mandatory field shall contain the IDC assigned to this Type-8 record as listed in thein<strong>for</strong>mation item IDC <strong>for</strong> 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 <strong>for</strong> the signature image of the subject, or 1 <strong>for</strong> 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: <strong>Image</strong> 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 <strong>for</strong>m 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

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