Attempts to determine whether the input image is a view of the chessboard pattern and locate internal chessboard corners

Namespace:  Emgu.CV
Assembly:  Emgu.CV (in Emgu.CV.dll) Version: 2.1.0.649 (2.1.0.649)

Syntax

         
 C#  Visual Basic  Visual C++ 
public static int cvFindChessboardCorners(
	IntPtr image,
	Size patternSize,
	float[,] corners,
	ref int cornerCount,
	CALIB_CB_TYPE flags
)
Public Shared Function cvFindChessboardCorners ( _
	image As IntPtr, _
	patternSize As Size, _
	corners As Single(,), _
	ByRef cornerCount As Integer, _
	flags As CALIB_CB_TYPE _
) As Integer
public:
static int cvFindChessboardCorners(
	IntPtr image, 
	Size patternSize, 
	array<float,2>^ corners, 
	int% cornerCount, 
	CALIB_CB_TYPE flags
)

Parameters

image
IntPtr
Source chessboard view; it must be 8-bit grayscale or color image
patternSize
Size
The number of inner corners per chessboard row and column
corners
array< Single ,2>[,](,)[,]
The output array of corners detected
cornerCount
Int32 %
The output corner counter. If it is not IntPtr.Zero, the function stores there the number of corners found
flags
CALIB_CB_TYPE
Various operation flags

Return Value

Non-zero value if all the corners have been found and they have been placed in a certain order (row by row, left to right in every row), otherwise, if the function fails to find all the corners or reorder them, it returns 0

Remarks

The coordinates detected are approximate, and to determine their position more accurately, the user may use the function cvFindCornerSubPix

See Also