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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2003, Vol. 4 Issue (1): 47-52    DOI: 10.1631/jzus.2003.0047
Information & Computer Technology     
Improvement of the termination criterion for subdivision of the rational Bézier curves
ZHANG Ren-jiang, WANG Guo-jin
Institute of Computer Images and Graphics, Zhejiang University, Hangzhou 310027, China; State Key Lab of CAD and CG, Zhejiang University, Hangzhou 310027, China; China Institute of Metrology, Hangzhou 310034, China
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Abstract  By using some elementary inequalities, authors in this paper makes further improvement for estimating the heights of Bézier curve and rational Bézier curve. And the termination criterion for subdivision of the rational Bézier curve is also improved. The conclusion of the extreme value problem is thus further confirmed.

Key words： Rational Bézier curves      Subdivision      Termination criterion     
Received: 28 December 2001     
CLC:  TP391.72  
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ZHANG Ren-jiang
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Cite this article:

ZHANG Ren-jiang, WANG Guo-jin. Improvement of the termination criterion for subdivision of the rational Bézier curves. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2003, 4(1): 47-52.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2003.0047     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2003/V4/I1/47

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