Fig 1.
Flowchart of the improved method in this paper.
Fig 2.
The curve of the relationship between the filter threshold and the processing time.
Table 1.
Segmentation data of the training images.
Fig 3.
Comparison of segmentation results with different filter thresholds in the first case. (a, b, c and d are the segmentation result with the filter thresholds of 5, 10, 15 and 20, respectively).
Fig 4.
Comparison of segmentation results with different filter thresholds in the second case. (a, b, c and d are the segmentation result with the filter thresholds of 5, 10, 15 and 20, respectively).
Table 2.
The comparison of data under different filter thresholds.
Fig 5.
Origin image.
Fig 6.
Gray histogram.
Fig 7.
The segmentation result of class A froth image.
Fig 8.
The segmentation result of class B froth image.
Fig 9.
The segmentation result of class C froth image.
Fig 10.
The segmentation result of class D froth image.
Table 3.
Comparative data.
Fig 11.
The original curve and the fitting curve.