Table 3 Quantitative performance comparison of five phase-unwrapping algorithms across different evaluation metrics.

From: Application of a two-dimensional phase unwrapping algorithm to lubricant film thickness measurement

Algorithm

Phase smoothness (GMSD)

Unwrapping errors in noisy region (pixel)

Noise sensitivity (local gradient Std. Dev.)

Goldstein Method

3.0579

4466

1.4948

TIE Method

0.2299

2677

0.6993

N-F Method

0.1796

1320

0.4850

SRNCP Method

0.1579

600

0.4503

Improved Method

0.1177

25

0.2894