文献类型：期刊文献

中文题名：基于物体影子反求特定时空

英文题名：Reversing Specific Time and Space Based on the Shadow of Objects

作者：郑鹏飞[1];林大钧[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2009

卷号：35

期号：5

起止页码：798

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：影子;反求设计;坐标变换;自动计算

外文关键词：shadow; reverse design; coordinate transformation; automatic calculation

摘要：根据物体在太阳光照射下将产生影子的自然现象,研究物体影子的形成原理,通过分析物体实形与其影子关系建立数学模型。进一步利用影子的形成原理进行逆向变换,通过VisualBasic和Visual Lisp编程实现反求算法,研制了计算机反求实验平台,实现对影子的反求,并通过实验反求实际模型,比较分析数据误差从而验证算法的有效性,最后提出了一种新的反求方法。
According to the natural phenomenon that produces a shadow of objects under direct sunlight, the principle of formation of a shadow was studied, through analyzing the relationship between actual shape of objects and its shadow, and then their mathematical model was built. Further using this principle to make reasonable reverse transformation, the computer experiment platform of reverse was developed by programming Visual Basic and Visual Lisp realizing reverse algorithm. The computer experiment platform was applied for reversing 3D model based on its shadow, and through the experimental reversing actual model. Comparing and analyzing with error between real and experimental data, the experiment results show that this algorithm is effective, and finally a new method of reverse is introduced here.