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Table 3 Comparison of enhanced light stripe images (the linear light stripe)

From: Research on image enhancement of light stripe based on template matching

Gauge size

\( {S}_1^2 \) × 10− 6(before optimization)

\( {S}_1^2 \) × 10− 6(after optimization)

2 mm

1.039

0.541

3 mm

1.271

0.786

4 mm

0.492

0.456

5 mm

0.768

0.720

6 mm

0.892

0.454

7 mm

0.408

0.421

\( {S}_{\mathrm{Mean}}^2 \)

0.812

0.563