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

Table 3

Average RMS error comparison among our method, FEQ, and DSD (unit: 10⁻²).

Triangles	The DSD	The FEQ	Our method
5000	4.9897	1.2658	1.2092
2000	10.0919	2.7134	2.4207
1000	21.2115	5.2143	3.7969
500	38.8511	10.6767	6.2438