| 一种实用的反三角函数快速算法 |
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| 引用本文： | 胡庆,刘克.一种实用的反三角函数快速算法[J].南京理工大学学报(自然科学版),1992(1). |
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| 作者姓名： | 胡庆 刘克 |
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| 作者单位： | 华东工学院计算机科学与工程系
(胡庆)，华东工学院计算机科学与工程系(刘克) |
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| 摘 要： | 反三角函数的快速计算在图像处理、机器人视觉和计算机图形学等领域中有着广泛的应用背景和实用价值。文中讨论了一种利用加权平均进行反三角函数快速计算的算法,给出了一系列近似公式,并对近似精度和适用范围进行了理论分析。最后讨论了对arctg x的近似计算及基于这种思想的八方向链码的方向计算。
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| 关 键 词： | 三角函数 计算方法 图象分析 |
A Practical Algorithm of Quick Calculating Anti-trigonometric Function |
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| Hu Qing.A Practical Algorithm of Quick Calculating Anti-trigonometric Function[J].Journal of Nanjing University of Science and Technology(Nature Science),1992(1). |
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| Authors: | Hu Qing |
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| Institution: | Hu Qing Department of Computer Science and Engineering et al |
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| Abstract: | The method of quick calculating anti-trigonometric function isvery important and has wide applications in the fields of image processing,robot vision and computer graphics. In this paper,the idea of the calculatingalgorithm based on the method of weighted mean is first proposed ; then,a se-ries of approximate formulae and the precision and the limitation of these for-mulae are discussed ; finally, the approximate formula of arctg x and the relatedeight-direction code calculating problem are studied. |
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| Keywords: | trigonometric function calculating method image analysis |
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