Head Pose Estimation with Improved Random Regression Forests

Table 7

The mean () and variance () of the similarity of all pairs of trees in the random regression forests constructed on different databases.

Databases	Similarity mean ()	Similarity variance ()
Pointing’04	0.169	0.067
CAS-PEAL	0.190	0.013
NUKU	0.173	0.015
CUbiC FacePix	0.206	0.025
Surveillance	0.120	0.012