Back to Adaptive Vision Studio website

You are here: Start » Filter Reference » Camera Calibration And 3D Reconstruction » cvFindCirclesGrid


Finds the centers in the grid of circles.

Name Type Range Description
inImage Image Input image
inPatternWidth Integer 0 - Pattern width.
inPatternHeight Integer 0 - Pattern height.
inSymmetricPattern Bool Specifies whether the pattern is symmetric, ignored when using clustering.
inUseClustering Bool Specifies whether to use a clustering algorithm.
outFound Bool It is true if circles grid was found, false otherwise.
outCenters Point2DArray Centers of found circles.


This filter can throw an exception to report error. Read how to deal with errors in Error Handling.

List of possible exceptions:

Error type Description
DomainError Empty image in cvFindCirclesGrid.
DomainError inImage must have pixels of UInt8 type in cvFindCirclesGrid.

Complexity Level

This filter is available on Basic Complexity Level.