An Improved Surface Simplification Method for Facial Expression Animation Based on Homogeneous Coordinate Transformation Matrix and Maximum Shape Operator

Table 6

Perceived quality comparison between our method and FEQ (unit: 10⁻¹).

Triangles	FEQ	Our method	Improvement rate
5000	1.7828	1.7413	2.33%
2000	2.3440	2.2074	5.83%
1000	2.8950	2.5682	11.29%
500	3.4751	3.0275	12.88%