[Retracted] Rendering and Optimization Algorithm of Digital City’s 3D Artistic Landscape Based on Virtual Reality

Table 1

Threshold selection.

Threshold (number of primary selection points)	1/2R	2/3R	3/4R	4/5R	5/6R
Image 1	118	60	5	37	37
Image 2	101	101	100	13	2
Image 3	88	64	32	20	9
Image 4	138	610	67	275	12
Image 5	931	149	452	98	4
Image 6	174	110	100	42	160
Image 7	355	60	75	37	49
Image 8	118	101	5	13	22