Table 4 Comparison of  enhanced light stripe images (the arc light stripe)
From: Research on image enhancement of light stripe based on template matching
Number | Before optimization | After optimization | ||
|---|---|---|---|---|
Variance \( {S}_X^2 \) | Variance \( {S}_Y^2 \) | Variance \( {S}_X^2 \) | Variance \( {S}_Y^2 \) | |
Shaft 1 | 143.535 | 274.191 | 78.062 | 151.889 |
Shaft 2 | 120.085 | 656.769 | 55.475 | 346.786 |
Shaft 3 | 59.695 | 87.608 | 27.243 | 117.272 |
Shaft 4 | 44.707 | 152.676 | 19.408 | 116.587 |
\( {S}_{\mathrm{Mean}}^2 \) | 92.006 | 292.811 | 45.047 | 183.134 |