'Get the full size image with the masked to the blob'

def getFullHullMaskedImage(self):

    retVal = cv.CreateImage((self.image.width, self.image.height), cv.IPL_DEPTH_8U, 3)
    cv.Zero(retVal)
    bmp = self.image.getBitmap()
    mask = self.mHullMask.getBitmap()
    tl = self.topLeftCorner()
    cv.SetImageROI(retVal, (tl[0], tl[1], self.width(), self.height()))
    cv.SetImageROI(bmp, (tl[0], tl[1], self.width(), self.height()))
    cv.Copy(bmp, retVal, mask)
    cv.ResetImageROI(bmp)
    cv.ResetImageROI(retVal)
    return Image(retVal)
