Research Article
An Automatic Assembling System for Sealing Rings Based on Machine Vision
Table 1
The parameters of related algorithm.
| ā | Type of threshold | Range | Unit |
| The recognition of the sealing ring | The inverse ratio of the accumulator resolution to the image resolution | dp = 2 | ā | The minimum distance between the centers of the detected circles | min_dist = 20 | Number of pixels | The higher threshold of Canny edge detector (the lower one will be twice smaller) | param1 = 30 | The accumulator threshold at the center detection stage | param2 = 50 | The number of voting instances | The minimum circle radius | min_radius = 23 | Number of pixels | The maximum circle radius | max_radius = 27 | Binarization | = 105 | Gray value | The black pixels within the binarized image | = 1 | Number of pixels |
| The recognition of the sealing ports | Binarization | = 69 | Gray value | The area of the contour | | Number of pixels | The white pixels within the contour | | The points of the contour boundary | | The radius of the fitted circle | |
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