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

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 VERSIONFigure 6: Region of interestThere can only be one region of interest <strong>for</strong> a given feature set. If there are multipleimpressions within a single image, more than one feature set can be marked <strong>for</strong> the image,resulting in multiple Type-9 records associated with a single image, differentiated by theregion of interest, as specified in Field 9.300: EFS region of interest / ROI.8.9.7.0.3 EFS anglesAll angles are measured in integer degrees. Positive numbers indicate anglescounterclockwise from the right, whereas negative numbers (when permitted by specificfields) indicate angles clockwise from the right.Figure 7: Measurement of angles.8.9.7.1 Field 9.300: EFS region of interest / ROIMay, 2013 DRAFT VERSION UPDATE 2013 Page 145

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