opencv/cv.go
func Erode(src, dst *IplImage, element *IplConvKernel, iterations int) {
	C.cvErode(
		unsafe.Pointer(src),
		unsafe.Pointer(dst),
		(*C.IplConvKernel)(unsafe.Pointer(element)),
		C.int(iterations),
	)
}
func Erode(src, dst *IplImage, element *IplConvKernel, iterations int) {
	C.cvErode(
		unsafe.Pointer(src),
		unsafe.Pointer(dst),
		(*C.IplConvKernel)(unsafe.Pointer(element)),
		C.int(iterations),
	)
}
//CVAPI(void) cvDilate( const CvArr* src, CvArr* dst, IplConvKernel* element=NULL,
//                      int iterations=1 );
/* Erodes an image by using a specific structuring element. */