Research Article
Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge
Table 2
The standard gauge detection results.
|
The pressure of checkpoint (MPa) | The indicating value of standard gauge |
The cited error (absolute error/range) | Positive stroke |
Error 1 (visual detection-weights value) |
Error 2 (manual reading-weights value) | Negative stroke |
Error 1 (visual detection-weights value) |
Error 2 (manual reading-weights value) | Visual detection | Manual reading | Visual detection | Manual reading |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.025 | 0.024343 | 0.024 | 0.000657 | 0.001 | 0.025610 | 0.025 | 0.000610 | 0 | 0.26/0.24 | 0.050 | 0.048727 | 0.049 | 0.001273 | 0.001 | 0.049761 | 0.05 | 0.000240 | 0 | 0.51/0.10 | 0.075 | 0.074386 | 0.075 | 0.000614 | 0 | 0.075876 | 0.076 | 0.000876 | 0.001 | 0.25/0.35 | 0.100 | 0.100408 | 0.099 | 0.000408 | 0.001 | 0.100147 | 0.1 | 0.000147 | 0 | 0.16/0.06 | 0.125 | 0.125060 | 0.125 | 0.000060 | 0 | 0.125482 | 0.126 | 0.000482 | 0.001 | 0.024/0.19 | 0.150 | 0.149762 | 0.15 | 0.000238 | 0 | 0.150647 | 0.151 | 0.000647 | 0.001 | 0.095/0.26 | 0.175 | 0.174613 | 0.175 | 0.000387 | 0 | 0.174720 | 0.176 | 0.000280 | 0.001 | 0.155/0.11 | 0.200 | 0.198316 | 0.2 | 0.001684 | 0 | 0.201540 | 0.201 | 0.001540 | 0.001 | 0.674/0.62 | 0.225 | 0.225053 | 0.224 | 0.000053 | 0.001 | 0.225149 | 0.225 | 0.000149 | 0 | 0.02/0.06 | 0.250 | 0.249344 | 0.249 | 0.000656 | 0.001 | 0.249344 | 0.249 | 0.000660 | 0.001 | 0.26/0.26 |
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