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CvInvokeCornerSubPix Method
Iterates to find the sub-pixel accurate location of corners, or radial saddle points

Namespace: Emgu.CV
Assembly: Emgu.CV.World (in Emgu.CV.World.dll) Version: (
public static void CornerSubPix(
	IInputArray image,
	IInputOutputArray corners,
	Size win,
	Size zeroZone,
	MCvTermCriteria criteria


Type: Emgu.CVIInputArray
Input image
Type: Emgu.CVIInputOutputArray
Initial coordinates of the input corners and refined coordinates on output
Type: System.DrawingSize
Half sizes of the search window. For example, if win=(5,5) then 5*2+1 x 5*2+1 = 11 x 11 search window is used
Type: System.DrawingSize
Half size of the dead region in the middle of the search zone over which the summation in formulae below is not done. It is used sometimes to avoid possible singularities of the autocorrelation matrix. The value of (-1,-1) indicates that there is no such size
Type: Emgu.CV.StructureMCvTermCriteria
Criteria for termination of the iterative process of corner refinement. That is, the process of corner position refinement stops either after certain number of iteration or when a required accuracy is achieved. The criteria may specify either of or both the maximum number of iteration and the required accuracy
See Also