Table 5 Algorithm processing time - comparative table

[64] - billet

Segmentation, wavelet reconstruction, classification

2

0.25 mm along web

Suitable

93.7 ms (segmentation - 8.34 ms, wavelet - 76.98 ms, classification - 8.38 ms)

[70] - hot strip

Thresholding, segmentation, classification

20

1 × 1 mm

Suitable up to 5 m/s

178 ms (thresholding - 38 ms, segmentation - 44.5 ms, classification - 95.5 ms)

[61] - rod/bar

Pre-processing, detection

18.5

Suitable

8.33 ms up to binarization: 3.4 ms, double threshold: 4.93 ms

[58] - rod/bar

Pre-processing, detection

4.6

Suitable

13 ms (segmentation - 2 ms, ave. filter - 3 ms, detection - 8 ms)

[2] - rod/bar

Feature extraction, classification

Max. 100

Suitable

5.8 ms (feature extraction-5.6 ms, SVM prediction-0.16 ms)

[75] - rod/bar

Detection, identification

18

0.5 mm along web

Suitable

7.315 ms/image - detection, 74.747 ms/histogram - identification