A Low-Complexity Region-Based Authentication Algorithm for 3D Polygonal Models

Table 4

Comparison of previous and current methods.

Type	Vertex-based			Region-based
Algorithm	[9]	[11]	[12]	[8]	[10]	[14]	Our approach
Publicity	Semiblind	Blind	Blind	Blind	Blind	Semiblind	Blind
Embedding rate	100%	100%	100%	13.47%	34.08%	N. A.	26.85%
Embedding capacity	1	48	3	1	N. A.	<1	3.27–8.95
Adaptability	No	No	No	No	No	No	Yes
Distortion control	Yes	Yes	No	Yes	Yes	No	Yes
Robustness	Vertex reorder	ST	Vertex reorder	ST	ST	Vertex reorder	ST
Method	QIM	QIM	Hamming code	QIM	QIM	Iterative perturbation	Message-digit substitution