The degree elevation formula for ball Bezier curve is given,and it is proved that the(union) of ball control point converges to the original ball Bezier curve as the degree is elevated incessantly.
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美
給出球域B ez ier曲線(xiàn)的升階公式；并證明在不斷升階的過(guò)程中球域控制頂點(diǎn)的并集收斂到原球域B ez ier曲線(xiàn).
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