opencv/imgproc.go
func FitEllipse2(points unsafe.Pointer) Box2D {
	box := C.cvFitEllipse2(points)
	center := Point2D32f{float32(box.center.x), float32(box.center.y)}
	size := Size2D32f{float32(box.size.width), float32(box.size.height)}
	angle := float32(box.angle)
	return Box2D{center, size, angle}
}
func FitEllipse2(points unsafe.Pointer) Box2D {
	box := C.cvFitEllipse2(points)
	center := Point2D32f{float32(box.center.x), float32(box.center.y)}
	size := Size2D32f{float32(box.size.width), float32(box.size.height)}
	angle := float32(box.angle)
	return Box2D{center, size, angle}
}
/* points can be either CvSeq* or CvMat* */