ANSI/NIST-ITL 1-2011 - NIST Visual Image Processing Group ...

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ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic Information14.18 Field 10.019: Lighting artifacts / LAFThis optional field contains the type of lighting artifacts found in the Type-10image record. This field consists of one information item. Multiple lighting artifactsmay be repeated as subfields. The codes are:F: Face shadowsH: Hot spotsR: Reflections from eye glasses14.19 Field 10.020: Subject pose / POSThis optional field is to be used for the exchange of facial image data. Whenincluded, this field shall contain one ASCII character code selected from Table 48to describe the pose of the subject. For the determined 3D pose entry "D", Field10.025 shall contain a set of determined 3D pose angles (i.e., Yaw, Pitch, andRoll angles) away from the full frontal face orientation. Note that the offset anglein Field 10.021 is opposite from the yaw angle in Field 10.025 as indicated by aminus sign.Table 48 Subject posePose descriptionFull Face FrontalRight Profile (90 degree)Left Profile (90 degree)Angled PoseDetermined 3D PosePose codeFRLAD14.20 Field 10.023: Pose offset angle / POAThis shall only be used for the exchange of facial image data if Field 10.020(POS) contains an “A” to indicate an angled pose of the subject. This field shallbe omitted for a full face or a profile. This ASCII field specifies the pose directionof the subject at any possible orientation within a circle. Its value shall be to thenearest degree.The offset angle shall be measured from the full-face pose position and have arange of values from -180 degrees to +180 degrees. A positive angle is used toexpress the angular offset as the subject rotates from a full-face pose to their left(approaching a right profile). If the entry in the POS field is an “F”, “L” or “R”, thecontents of this field are to be ignored.140DRAFT 2
ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic Information14.21 Field 10.023: Photo acquisition source / PASThis optional field shall specify the classification of the source of the imagecontained in this record. This field is mandatory if the SAP entry (Field 10.013) is"40" or greater for face image records. When included, this field shall contain anASCII character code selected from Table 49 to describe the source of capturedimage data.Table 49 Acquisition source type codesAcquisition source type attributeUnspecified or unknownAttribute codeUNSPECIFIEDStatic photograph from an unknown source UNKNOWNPHOTOStatic photograph from a digital still-imagecameraStatic photograph from a scannerSingle video frame from an unknownsourceSingle video frame from an analogue videocameraSingle video frame from a digital videocameraVendor specific sourceDIGITALCAMERASCANNERUNKNOWNVIDEOANALOGUEVIDEODIGITAL VIDEOVENDORThe "VENDOR" category is used to enter unlisted or miscellaneous sourceattributes of the facial image.14.22 Field 10.024: Subject quality score / SQSThis optional ASCII field shall specify quality score data for facial images storedin this record. They identify a quality score and the algorithm used to create thequality score. This information is useful to enable the recipient of the qualityscore to differentiate between quality scores generated by different algorithmsand adjust for any differences in processing or analysis as necessary.The subfield (Quality Value / QVS) may be repeated. It is comprised of thefollowing information items:141• The first information item (quality value / QVU) shall be a quantitativeDRAFT 2
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