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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 VERSIONThis mandatory field shall contain un<strong>for</strong>matted text with the contact in<strong>for</strong>mation <strong>for</strong>additional details regarding the feature data. At a minimum, the text shall identify the nameof the organization responsible <strong>for</strong> the in<strong>for</strong>mation content.8.9.6.7.5 Fields 9.180 through 9.225: Other feature sets – user-defined fieldsThese fields shall be used to record specific vendor proprietary in<strong>for</strong>mation regardingminutiae feature data. The vendor shall define the <strong>for</strong>mat and content of each field.8.9.7 Extended Feature SetThis entire block of fields is optional. Descriptions of fields in the range 9.300-9.399 usethe word ‘mandatory’ to indicate “mandatory if this block of records is present”.'Optional' in this block of fields shall mean “optional if this block of records is present”.This data block defines the content, <strong>for</strong>mat, and units of measurement <strong>for</strong> the definitionand/or exchange of friction ridge feature in<strong>for</strong>mation that may be used in theidentification of a subject based on friction ridge in<strong>for</strong>mation. This in<strong>for</strong>mation isintended <strong>for</strong> an individual examiner to define the content of a single impression orcomparison of two impressions, as well as <strong>for</strong> interchange between criminal justiceadmi<strong>nist</strong>rations or organizations that use friction ridge in<strong>for</strong>mation <strong>for</strong> identificationpurposes. This specification defines a quantifiable, repeatable, and clear method ofcharacterizing the in<strong>for</strong>mation content of a fingerprint or other friction ridge image. SeeAnnex F: Extended Feature Set Detailed Intructions <strong>for</strong> specific instructions onentering data in these fields.8.9.7.0.1 EFS coordinate systemThe relative position of all EFS features shall be expressed as integers 80 in units of 10micrometers (0.01 mm or 0.00039 in), with the origin in the top left of the Field 9.300:EFS region of interest / ROI. In this coordinate system, values of X increase from left toright and values of Y increase from top to bottom. With the exception ofField 9.323: EFS center point of reference / CPR, all positions shall be in the range(0,0)-(ROI.width-1, ROI.height-1). Width and/or height dimensions <strong>for</strong> a singleimpression will always fall within an upper bound of 50 cm (19.7”, or 50,000 units). Thisis not counted in pixels. This is the origin used in EFTS, EBTS (both the FBI's and that ofthe Department of Defense), INTERPOL's INT-I and the IAFIS Type-9 fields, but not inthe original ANSI/<strong>NIST</strong>-ITL Type-9 Fields 9.005 through 9.012 (legacy fields), which usea bottom left origin.There are no specific maximum dimensions in the coordinate system, because dimensionsare limited by the image dimensions, and ANSI/<strong>NIST</strong>-ITL-1 <strong>2011</strong> does not have statedmaximum dimensions <strong>for</strong> Type 13, 14, or 15 images. Dimensions <strong>for</strong> a single impressionwill always fall well within an upper bound of 50cm (19.7”, or 50000 units) 81 .80[2013e>] The sentence is modified from the original <strong>2011</strong> text to allow zero as a coordinate and movesthe exception <strong>for</strong> Field 9.323 to a another part of the paragraph, <strong>for</strong> clarity. [

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