This interface provide functionalities of circle inspection via the gauge. More...
Public Member Functions | |
| LPVErrorCode | Detect (ILImage *img, ILAnnulusRegion *region, ILShapeGaugeResult **gaugeResult) |
 Public Member Functions inherited from ILObject | |
| ILObject * | Copy () |
| LPVErrorCode | Load (LString filename) |
| void | Reset () |
| LPVErrorCode | Save (LString filename) |
| BOOL | Valid () |
Additional Inherited Members | |
| Properties inherited from ILShapeGauge | |
| int | FitCountThreshold [get, set] |
| The minimum count of points contribute to a valid fitting result. | |
| double | FitDistThreshold [get, set] |
| The distance threshold between the result line and a sample point, for filtering the out-lier points. Set to negative value(-1) to bypass the out-lier filtering. | |
| int | SampleRegionHeight [get, set] |
| The height of the sample region, at least 5 pixels. Please check the Detect() function of individual gauge tool, for either it adopts this property or region's height during inspection. | |
| int | SampleRegionInterval [get, set] |
| The distance between the centers of two nearby sample regions. | |
| int | SampleRegionWidth [get, set] |
| The width of the sample region, at least 5 pixels. | |
| Properties inherited from ILGauge | |
| int | AcceptScore [get, set] |
| The accept score used in inspection. It defines the minimum score for identifying the sample point as a valid result. You may pick a proper score with help of the score chart. More... | |
| int | KernelSize [get, set] |
| The kernel size used in gradient filtering, should be an odd number which is ≥ 3, say 3, 5, 7, etc. | |
| int | MaxSamplePointCount [get, set] |
| The maximum of sample points to find in each sample region. | |
| BOOL | NormScore [get, set] |
| Whether we should normalize the score based on maximum gradient or grayscale value in region. | |
| LPVPolarity | Polarity [get, set] |
| The detection polarity, either object or edge polarity is acceptable. | |
| LPVGaugeFeatures | SortBy [get, set] |
| The method used to sort all sample point candidates, the top ones are reported as final results. More... | |
| LPVFindBy | SortByPosition [get, set] |
| Works when SortBy enables LPVGaugeFeaturePosition, prefer either the last, the central or the last ones. More... | |
| BOOL | SortByScoreDescending [get, set] |
| Works when SortBy enables LPVGaugeFeatureScore. True to sort all sample point candidates descending(from large score to small, aka. prefer the maximum magnitude), false for sorting in ascending order. More... | |
This interface provide functionalities of circle inspection via the gauge.
The circle gauge is used to measure position and size of the circle formed by the circular edges. Edge points are sampled along the given region using equally spaced point measurement gauges, and then fit to a circle.
Compared with the feature locating tool LCircleDetector, it's more resistant to noise and efficient. But it is easily confused when there's multiple concentric circles in the region. For that case and for high-accuracy required task, it's recommended to use LCircleDetector instead.
To use this interface, you should create a LCircleGauge object.
| LPVErrorCode Detect | ( | ILImage * | img, |
| ILAnnulusRegion * | region, | ||
| ILShapeGaugeResult ** | gaugeResult | ||
| ) |
Detect the circle using the circle gauge.
| [in] | img |   The input image. |
| [in] | region | The input region, it should be annulus region, the difference between the inner and outer radius is used as the height of the sample region. |
| [out] | gaugeResult | Return the gauge result, it contains the result circle. |
| error | Return error code if anything is wrong. |
