A Hybrid Vector Quantization Combining a Tree Structure and a Voronoi Diagram

Table 1

The experimental results of different ratios of preserved information.

Number of dimensions	Ratio of preserved information	Distortion of initial codeword	Optimal codeword with 1-ripple regions
			Distortion	Number of traversed Voronoi regions
2	56.56%	4.105	3.227	6.4
3	68.38%	3.631	2.784	16.4
4	82.23%	3.385	2.197	39.1