Analysis of Visualization Technology of 3D Spatial Geographic Information System

Table 1

Case analysis comparison.

Original image size	Subblock size				Unified resolution model
	256  256	512  512	64  64	128  128
7000  5400	19.01s	18.98s	18.66s	17.67s	19.12s
2048  2028	2.5s	2.61s	2.71s	2.89s	4.65s
1024  1024	0.78s	0.81s	0.85s	0.95s	0.8s