Rounds off and converts (x,y,w,h) to int
        :return: a Box object with all integer values

def to_int(self):
        """
        Rounds off and converts (x,y,w,h) to int
        :return: a Box object with all integer values
        """
        coord = [int(round(x)) for x in self.xy_coord()]
        return self.from_xy(coord[0], coord[1], coord[2], coord[3])