Roll
in facial identification, an intrinsic rotation of the head about a horizontal front-to-back (sagittal) axis measured in degrees. Discussion—Frontal poses have a roll angle of 0. Positive angles represent faces tilted toward their right shoulder (counter-clockwise rotation around the axis). A roll angle of 0 denotes that the left and right eye centers have identical vertical coordinates. The roll axis is typically defined as the Z-axis (positive forward).
Committee
Facial and Iris Identification
Date Added to Lexicon
Standard Source (Designation Number Title of Standard. Publisher, Place, Year.)
ANSI/ASTM E1732-24e1 Standard Terminology Relating to Forensic Science. ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428, 2024.
Source link
Reprinted, with permission, from ASTM E1732-24e1 Standard Terminology Relating to Forensic Science, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard is available from ASTM International, https://www.astm.org