'**SUMMARY**
Get a Numpy array of the image in width x height x RGB dimensions compatible with OpenCV >= 2.3
**RETURNS**
Returns the  3D numpy array of the image compatible with OpenCV >= 2.3
**EXAMPLE**
>>> img = Image("lenna")
>>> rawImg  = img.getNumpyCv2()
**SEE ALSO**
:py:meth:`getEmpty`
:py:meth:`getBitmap`
:py:meth:`getMatrix`
:py:meth:`getPIL`
:py:meth:`getGrayNumpy`
:py:meth:`getGrayscaleMatrix`
:py:meth:`getNumpy`
:py:meth:`getGrayNumpyCv2`'

def getNumpyCv2(self):

    if (type(self._cv2Numpy) is not np.ndarray):
        self._cv2Numpy = np.array(self.getMatrix())
    return self._cv2Numpy
