'**SUMMARY**
Intensity applied to all three color channels
**PARAMETERS**
* *curve* - a ColorCurve object, or 2d list that can be conditioned into one
**RETURNS**
A SimpleCV Image
**EXAMPLE**
>>> img = Image("lenna")
>>> rc = ColorCurve([[0,0], [100, 120], [180, 230], [255, 255]])
>>> gc = ColorCurve([[0,0], [90, 120], [180, 230], [255, 255]])
>>> bc = ColorCurve([[0,0], [70, 110], [180, 230], [240, 255]])
>>> img2 = img.applyRGBCurve(rc,gc,bc)
**SEE ALSO**
:py:class:`ColorCurve`
:py:meth:`applyHLSCurve`'

def applyIntensityCurve(self, curve):

    return self.applyRGBCurve(curve, curve, curve)
