'**SUMMARY**
Initializes all the required parameters and attributes of the CAMShift class.
**PARAMETERS**
* *img* - SimpleCV.ImageClass.Image
* *bb* - A tuple consisting of (x, y, w, h) of the bounding box
* ellipse* - A tuple
**RETURNS**
SimpleCV.Tracking.TrackClass.CAMShiftTrack object
**EXAMPLE**
>>> track = CAMShiftTrack(image, bb, ellipse)'

def __init__(self, img, bb, ellipse):

    self = Track.__init__(self, img, bb)
    self.ellipse = ellipse
