| 基于投影法实现矩形窗口的任意曲线裁剪 |
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| 引用本文： | 李红林,兰美辉,张顺吉,杨莉.基于投影法实现矩形窗口的任意曲线裁剪[J].云南民族大学学报(自然科学版),2011,20(2):132-135. |
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| 作者姓名： | 李红林 兰美辉 张顺吉 杨莉 |
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| 作者单位： | 1. 曲靖师范学院,计算机科学与工程学院,云南,曲靖,655011
2. 云南中医学院,现代教育技术中心,云南,昆明,650200 |
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| 摘 要： | 对含有任意曲线的图像进行二值化后,针对某一矩形区域,对曲线上的点进行水平和垂直投影,投影后若在该矩形区域内(窗口内),给予显示;否则在窗口外,裁剪掉(即不显示).该方法能动态的定义矩形窗口大小,能对任意规则曲线(如圆)和不规则曲线(如Bezier曲线、B样条曲线)进行裁剪.该方法简单、高效.
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| 关 键 词： | 投影 矩形窗口 曲线 裁剪 |
Random Clipping of Curves in Rectangular Windows Based on the Projection Method |
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| LI Hong-lin,LAN Mei-hui,ZHANG Shun-ji,YANG Li.Random Clipping of Curves in Rectangular Windows Based on the Projection Method[J].Journal of Yunnan Nationalities University:Natural Sciences Edition,2011,20(2):132-135. |
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| Authors: | LI Hong-lin LAN Mei-hui ZHANG Shun-ji YANG Li |
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| Institution: | LI Hong-lin1,LAN Mei-hui1,ZHANG Shun-ji1,YANG Li2(1.School of Compute Science and Engineering,Qujing Normal University,Qujing 655011,China,2.Modern Education Technology Center,Yunnan University of Traditional Chinese Medicine,Kunming 650200,China) |
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| Abstract: | Images with curves are binarized,and then horizontal and vertical projections are done to the points of the curves to a certain rectangular window.It aims to test whether the points are inside the rectangular region(or inside the window) or not after the projections.If they are inside the window,they should be displayed,otherwise,they should be clipped(not to be displayed).In this way the size of the rectangular window can dynamically be defined,and clipping can be done to any regular curves(for example,cir... |
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| Keywords: | projection rectangular window curve clipping |
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