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G~1 approximation of conic sections by quartic Bezier curves

机译:四次贝塞尔曲线的圆锥截面的G〜1逼近

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摘要

This paper proposes a new approximation method for conic sections by quartic Bezier curves with G~1 end-point continuity. We give an upper bound on the Hausdorff distance between the conic section and the quartic Bezier approximation curve, and also show that the approximation order is eight. Moreover, using the subdivision scheme at the shoulder point of the conic section, the resulting approximation curve has G~2 (curvature)-continuity with the conic section at the endpoints. Finally, we prove that our approximation has a smaller error bound than previous quartic Bezier approximations, and also present some numerical examples to demonstrate the validity and effectiveness of our method.
机译:本文提出了一种具有G〜1端点连续性的二次Bezier曲线对圆锥截面的近似方法。我们给出了圆锥截面与四次贝塞尔曲线逼近曲线之间的Hausdorff距离的上限,并且还证明了逼近阶为8。此外,在圆锥形截面的肩点处使用细分方案,得到的近似曲线在圆锥形截面的端点处具有G〜2(曲率)连续性。最后,我们证明了我们的近似方法比以前的四次Bezier近似方法具有较小的误差范围,并且还提供了一些数值示例来证明我们方法的有效性和有效性。

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