cvMorphologyEx

Performs advanced morphological transformations.

Name	Type	Range	Description
inSrc	Image		Source image.
inOp	CvMorphologicalOperation		Type of a morphological operation.
inElement	Region		Structuring element.
inAnchor	Location *		Anchor position within the element. The NIL value means that the anchor is at the center.
inIterations	Integer	0 -	Number of times erosion and dilation are applied.
inBorderType	CvBorderType		Pixel extrapolation method.
inBorderValue	Pixel *		Border value in case of a constant border.
outDst	Image		Output image.

Operation can perform advanced morphological transformations on image using an erosion and dilation as basic operations.

Opening operation:

Closing operation:

Morphological gradient:

"Top hat":

"Black hat":

cvMorphologyEx performed on sample image with inOp = MORPH_GRADIENT, inIterations = 1, inBorderType = BORDER_REPLICATE.

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

Error type	Description
DomainError	Morphological operation can be MORPH_* except MORPH_ERODE and MORPH_DILATE in cvMorphologyEx.
DomainError	Input image must have pixel type different from Int8 and Int32 in cvMorphologyEx.
DomainError	Input image must not be empty in cvMorphologyEx.

This filter is available on Basic Complexity Level.