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

ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONfeature points or landmarks. When present, it shall describe special attributes of manually orautomatically detected facial feature points of the captured facial image. This informationshall be entered as a four-information item feature point block in a repeating subfield.Multiple facial points may be listed using these information items, each in a separatesubfield. In the 2007 version of the standard, the maximum number of subfields wasrestricted to 88. In the 2008 version, there was no restriction on the upper limit. This versionmaintains the 2007 upper limit of 88 for all encodings. This field does not contain a Zcoordinate, unlike Field 10.032: 3D facial feature points/ 3DF.• The first information item, feature point type / FPT is a one charactervalue. It is mandatory. 120 It shall be either1 = Denoting an MPEG4 Feature point.2 = Anthropometric landmark. (This is new as of the 2011 version).• The second information item, feature point code / FPC is 3 to 5 characters.If FPT is 1, this information item shall be “A.B” with A and B defined inSection 8.10.28.1 and illustrated in Figure 14. If FPT is 2, the codes areentered as shown in the “Feature Point ID” column of Table 66. This is oneto four alphabetic characters.• The third information item is the x coordinate / HCX. It is 1 to 5 characters,denoting the pixel count horizontally to the right from the upper left pixel,which is set to 0.• The fourth information item is the y coordinate / HCY. It is 1 to 5characters, denoting the pixel count vertically down from the upper left pixel,which is set to 0.8.10.28.1 MPEG4 feature pointsThe feature point code / FPC item shall specify the feature point that is stored in thefeature point block. FPT = 1 in either Field 10.029: 2D facial feature points / FFP orField 10.032: 3D facial feature points/ 3DF denotes the codes for the feature points aretaken from the MPEG4 standard and defined as MPEG4 feature points. Each feature pointcode is represented by a notation A.B using a major (A) and a minor (B) value. Theencoding of the feature point code is given by the numeric ASCII representation of the valueof A.B. The period is required, and the maximum size of this entry shall be 5 characters.For the entire face, Figure 14 denotes the feature point codes associated with feature pointsas given by Annex C of ISO/IEC 14496-2. For the eyes and nose, additional detail is shownin Figure 13. Each code is given by major value A and minor value B. For example, thecode for the left corner of the left eye is given by major value 3 and minor value 7. “A”specifies the global landmark of the face to which this feature point belongs, such as nose,mouth, etc. “B” specifies the particular point. In case a Landmark Point has twosymmetrical entities (left and right) the right entity always has a greater and an even minor120[2013e>] In the 2011 base version, there was a sentence that incorrectly indicated that a period could be presentin this one digit numerical field. [