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- Properties specific to aiConfigureContourDetection variables
- WLanguage functions that use aiConfigureContourDetection variables
aiConfigureContourDetection (Type of variable) In french: iaParametreDetectionContour
The iaConfigureContourDetection type is used to define the parameters of the contour detection function. The characteristics of these parameters can be defined and changed using different WLanguage properties. Remark: For more details on the declaration of this type of variable and the use of WLanguage properties, see Declaring a variable. myContour is aiConfigureContourDetection
myContour.DetectionAlgorithm = aiDetectContourCannyEdge
myContour.Dilate = True
myContour.GaussianFilterKernelSize = 3
myContour.ValueThreshold = 150
myContour.ValueThresholdMax = 255
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myPolygon is Polygon
myPolygon = AIDetectContour("Image_test_contour_3.png", myContour) Properties Properties specific to aiConfigureContourDetection variables The following properties can be used to handle aiConfigureContourDetection variables: | | | | Property name | Type used | Effect |
|---|
| DetectionAlgorithm | Integer constant | Contour detection algorithm: - aiDetectContourCannyEdge (Default): edge detection algorithm developed by J.F.Canny in 1986.
- aiDetectContourBinaryThresholding: Binary thresholding algorithm.
| | Dilate | Boolean | Applies dilation to the image, which in some cases may allow for better detection: - True to apply dilation to the image,
- False (default value) otherwise.
| | GaussianFilterKernelSize | Integer | Noise reduction using Gaussian blur. By default, this property is set to 3. Remark: This value must be an odd number. | | ValueThreshold | Real | This property is used when the thresholding algorithm is applied. Any pixel with a value greater than ValueThreshold will be set to the value of ValueThresholdMax. By default, this property is set to 150.0. | | ValueThresholdMax | Real | This property is used when the thresholding algorithm is applied. Any pixel with a value greater than ValueThreshold will be set to the value of ValueThresholdMax. By default, this property is set to 255.0. |
WLanguage functions that use aiConfigureContourDetection variables aiConfigureContourDetection variables can be handled using the following WLanguage functions:
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