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

Table 2

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

Triangles	The DSD	Our method	Improvement rate
5000	4.9897	1.2092	75.77%
2000	10.0919	2.4207	76.01%
1000	21.2115	3.7969	82.10%
500	38.8511	6.2438	83.93%