Back to FabImage Studio website

You are here: Start » Filter Reference » Computer Vision » Camera Calibration » DetectCalibrationGrid_Circles_Deprecated

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
Input value
inImage Image Input image
Input value
inRoi Region* Range of pixels to be processed
Input value
inCircleRadius Real 1.0 - Circle radius measured in input image pixels.
Input value
inWorldCircleSpacing Real 0.0 - Real-world distance between adjacent circles centers.
Input value
inCircleDetectionThreshold Real - - Detection threshold (relative to local image patch).
Input value
inCirclePolarity Polarity Circle intensity with respect to background.
Output value
outImagePoints Point2DArray Image coordinates of detected calibration points.
Output value
outWorldPlanePoints Point2DArray World plane coordinates of detected calibration points.
Diagnostic input
diagCirclesRegion Region Image after thresholding, this is the circle detector input.
Diagnostic input
diagCircleCandidates Point2DArray Detected circle centers, before the grid construction step.

Complexity Level

This filter is available on Advanced Complexity Level.