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	You are here: Start » Filter Reference » Computer Vision » Camera Calibration » DetectCalibrationGrid_Circles_Deprecated
| Module: | Calibration | 
|---|
Detects an arbitrary size symmetric circle pattern on the image.
Applications
Camera calibration, image to world coordinates transformations.
| Name | Type | Range | Description | |
|---|---|---|---|---|
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				inImage | Image | Input image | |
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				inRoi | Region* | Range of pixels to be processed | |
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				inCircleRadius | Real | 1.0 - ![]()  | 
				Circle radius measured in input image pixels. | 
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				inWorldCircleSpacing | Real | 0.0 - ![]()  | 
				Real-world distance between adjacent circles centers. | 
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				inCircleDetectionThreshold | Real | -  - ![]()  | 
				Detection threshold (relative to local image patch). | 
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				inCirclePolarity | Polarity | Circle intensity with respect to background. | |
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				outImagePoints | Point2DArray | Image coordinates of detected calibration points. | |
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				outWorldPlanePoints | Point2DArray | World plane coordinates of detected calibration points. | |
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				diagCirclesRegion | Region | Image after thresholding, this is the circle detector input. | |
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				diagCircleCandidates | Point2DArray | Detected circle centers, before the grid construction step. | |
Complexity Level
This filter is available on Advanced Complexity Level.

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