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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 VERSION• The third in<strong>for</strong>mation item is mandatory if the AQT is 23 or 24. It is a text field,radio transmission <strong>for</strong>mat description / FDN. It is optional <strong>for</strong> other radiotransmission codes.• The fourth in<strong>for</strong>mation item is optional. It is a free text field, acquisition specialcharacteristics / AQSC that is used to describe any specific conditions notmentioned in the table. An example would be a near-infrared camera outputtingimages in visible wavelengths.8.20.15 Field 20.015: Source representation <strong>for</strong>mat / SFTThis is a mandatory field comprised of two in<strong>for</strong>mation items.• The first in<strong>for</strong>mation item is mandatory. It is file type / FTY. If the sourcerepresentation is a digital file, this shall contain the suffix indicating the file type(such as JPG). If it is an analog file, enter ‘ANALOG’. For digital data stored inother <strong>for</strong>mats (such as digital tape), enter ‘OTHER’.• The second in<strong>for</strong>mation item is decoding instructions / DEI. It is optional andcontains free text up to 1000 characters.8.20.16 Field 20.016: Segments / SEGThis optional field shall consist of a subfield <strong>for</strong> each segment of a 2D image to be defined.Each subfield consists of a series of in<strong>for</strong>mation items. See Section 7.7.12.2 <strong>for</strong> details.8.20.17 Field 20.017: Scanned horizontal pixel scale / SHPSThis field is optional if a 2D still image is contained in this instance of the record. Otherwiseit shall be omitted. See Section 7.7.8.7 <strong>for</strong> details.8.20.18 Field 20.018: Scanned vertical pixel scale / SVPSThis field is optional if a 2D still image is contained in this instance of the record. Otherwiseit shall be omitted . See Section 7.7.8.8 <strong>for</strong> details.8.20.19 Field 20.019: Time index / TIXThis is a conditional field. If the record contains video or audio, it shall contain the start andend times of segments within the file. For instance, if AQT has a value between 1 and 7 orequal to 11, this field would not be used. See Section 7.7.2.5 <strong>for</strong> details.8.20.20 Field 20.020: Comment / COMThis optional field may be used to insert comments or other text in<strong>for</strong>mation with therepresentation data. See Section 7.4.4.May, 2013 DRAFT VERSION UPDATE 2013 Page 403

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