N

$L^{\infty }$

阶

$L^1$

阶

40 ×40

2.7805E−03

-

6.3336E−04

-

80 ×80

2.1383E−04

3.7008

7.3439E−05

3.1084

160 ×160

3.4851E−05

2.6172

8.9923E−06

3.0298

320 ×320

4.3248E−06

3.0105

1.1473E−06

2.9704

640 ×640

5.7024E−07

2.923

1.4118E−07

3.0226

1280 ×1280

7.1261E−08

3.0004

1.7734E−08

2.9929