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 InformationThe fourth information item (Tattoo description / TDS) in this subfield shallbe an ASCII text string that provides additional qualifiers to describe theimage or portion of the image. For example, to fully describe a tattoo, theremay be a class description of "ANIMAL", with a subclass description of"DOG", and qualified by "golden retriever with an overbite".An SMT image consisting of several parts or sub-images shall use multiplesubfields to fully describe the various parts or features found in the total image.The first subfield shall describe the most predominant feature or sub-imagecontained in the SMT image. Subsequent subfields shall describe additionalportions of the image that are not part of the main or central focal point of theimage. For example, a tattoo consisting of a man with a snake on the arm beingfollowed by a dog may contain three subfields - one describing the man, asecond describing the snake, and a third describing the dog.14.35 Field 10.043: Color / COLThis optional field shall contain one subfield corresponding to each subfieldcontained in Field 10.042. Each subfield shall contain one or more informationitems that list the color(s) of the tattoo or part of the tattoo. For each subfield, thefirst information item in the subfield shall be the predominant color chosen fromTable 62. Additional colors for the sub-field shall be entered as information itemsin the subfield.14.36 Field 10.044: Image transform / ITXThis optional field is used in the case when the image in this Type-10 record hasbeen transformed from the original image. Note that the untransformed image(s)(optionally) may be included in a Type-20 record. This field may be repeated ifmultiple transforms were performed.Table 63 Face/SMT image transform descriptionValueAGEAXISCOLORSHIFTCONTRASTCROPDISTDOWNSAMPLEDescriptionAge progressedOffaxis image rectification / Angle correctionColor shiftedContrast stretchedCroppedDistortion corrected (e.g. fisheye correction)Downsampled166DRAFT 2
ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic InformationValueGRAYILLUMIMGFUSEINTERPOLATEMULTCOMPMULTIVIEWPOSEROTATESNIRSUPERRESWHITEDescriptionGrayscale from colorIllumination transformImage-level fusion of two or more imagesUpsampledMultiply compressedMultiview imageFace-specific pose correctionRotated (in-plane)Simulated Near IRSuperresolution image, derived from multiplelower resolution imagesWhite balance adjusted14.37 Field 10.045: Occlusion / OCCThis optional field defines the outline and contents of any occlusion that partiallyor totally blocks the image of the face.This field shall consist of at the following subfields.The first subfield (occlusion opacity / OCCO) is from Table 64The second subfield (occlusion type / OCCT) is from Table 65.The third subfield is the total number of points defined / OCPQThe fourth subfield (Boundary of occlusion / BOO) is a set of N consecutivepoints (each being two information items). The boundary is defined as an n-vertex polygon, where “n” is between 3 and 99. The order of the verticesmust be in their consecutive order around the perimeter of the polygon, eitherclockwise or counterclockwise. No two vertices may occupy the samelocation. The polygon side defined by the last subfield and the first subfieldshall complete the polygon. The polygon must be a simple, plane figure withno sides crossing and no interior holes.The first information item (Horizontal offset / PHX) is the horizontal pixel offsetof the vertex relative to the origin positioned in the upper left corner of theimage.Brad Wing 6/20/10 5:04 PMComment: Reorganized for consistency167DRAFT 2
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