Research Article
Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge
Table 3
The test gauge detection results.
|
The pressure output of the checkpoint (MPa) | The indicating value of tested gauge |
The cited errors (the 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 | 0.025650 | 0.026 | 0.000650 | 0.001 | 0.027084 | 0.028 | 0.002084 | 0.003 | 0.26/0.83 | 0.050 | 0.050200 | 0.051 | 0.000200 | 0.001 | 0.051623 | 0.052 | 0.001623 | 0.002 | 0.08/0.65 | 0.075 | 0.075470 | 0.076 | 0.000470 | 0.001 | 0.077778 | 0.078 | 0.002778 | 0.003 | 0.19/1.11 | 0.100 | 0.100100 | 0.101 | 0.000100 | 0.001 | 0.101095 | 0.102 | 0.001095 | 0.002 | 0.04/0.44 | 0.125 | 0.126000 | 0.126 | 0.001000 | 0.001 | 0.126106 | 0.127 | 0.001106 | 0.002 | 0.4/0.44 | 0.150 | 0.150900 | 0.152 | 0.000900 | 0.002 | 0.151486 | 0.153 | 0.001486 | 0.003 | 0.36/0.59 | 0.175 | 0.177626 | 0.173 | 0.002626 | 0.002 | 0.177678 | 0.179 | 0.002678 | 0.004 | 1.05/1.07 | 0.200 | 0.202263 | 0.203 | 0.002263 | 0.003 | 0.202445 | 0.204 | 0.002445 | 0.004 | 0.90/0.978 | 0.225 | 0.226146 | 0.227 | 0.001146 | 0.002 | 0.226223 | 0.228 | 0.001223 | 0.003 | 0.46/0.49 | 0.250 | 0.249057 | 0.252 | 0.000940 | 0.002 | 0.249057 | 0.252 | 0.000940 | 0.002 | 0.38/0.38 |
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