Back to Adaptive Vision Library website

You are here: Start » Function Reference » Camera Calibration » IsCircleGridPresent

IsCircleGridPresent


Detects a circle board on an image. Returns the center of each circle.

Syntax

C++
C#
 
void avl::IsCircleGridPresent
(
	const avl::Image& inImage,
	int inBoardColumns,
	int inBoardRows,
	bool inSymmetricPattern,
	atl::Conditional<atl::Array<avl::Point2D> >& outImageGridPoints
)

Parameters

Name Type Range Default Description
inImage const Image& Input image
inBoardColumns int 4 - Number of ranks (columns) of the chessboard
inBoardRows int 4 - Number of files (rows) of the chessboard
inSymmetricPattern bool Board has symmetric pattern.
outImageGridPoints Conditional<Array<Point2D> >& Approximated position of grid points

Errors

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