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Five characteristics of table tennis.
| Type | Description |
|---|---|
| Roundness | M=4πA/C2 |
| Perimeter | The perimeter value of the measurement object, denoted by C |
| Area | The perimeter value of the measurement object, denoted by A |
| X distance | The maximum distance value of the measurement object in the horizontal direction, that is, the X-axis direction, expressed by Lx2 |
| Y distance | Measure the vertical direction of the object, that is, the maximum distance value in the Y-axis direction, expressed in Ly |
