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

Table 2

The experimental results of full search, HVQ_GS(4), HVQ(4), PVDS, Tree_N, and DP_TSVQ.

	Full search	HVQ_GS(4)	HVQ(4)	PVDS	Tree_N	DP_TSVQ
Traversed nodes	—	54.77	59.83	45.28	50	59.18
Distortion	4.609	4.698	4.686	5.135	4.865	5.420