To accomplish this normalization, the program first tries to determine the tilt, the lean, and the rotation.
Then, using these angles, the computer undoes the effect of these transformations on the computed distances.
The software was sold as ZN-Face and used by customers such as Deutsche Bank and operators of airports and other busy locations.
From these coordinates, a list of 20 distances, such as the width of mouth and width of eyes, pupil to pupil, were computed.
These operators could process about 40 pictures an hour.
In 2006, the performance of the latest face recognition algorithms was evaluated in the Face Recognition Grand Challenge (FRGC).
High-resolution face images, 3-D face scans, and iris images were used in the tests.
A facial recognition system is a technology capable of identifying or verifying a person from a digital image or a video frame from a video source.