三维符号构成及建模方法研究

随着计算机软硬件技术和三维可视化技术的快速发展,二维平面电子地图正在向直观、形象的三维电子地图方向过渡,而原来的二维地图符号已难以满足三维场景逼真性的要求,它必然要求与之配套的三维符号理论和技术的产生。由于三维符号如何构成及怎样标注尚无标准可遵循,在对三维符号的构成、分类及建模方法进行分析的基础上,提出了实体模型符号的两种建模方法,实验表明它们切实可行,能较好地表达三维实体模型。

建筑的符号语言——LYONS事务所作品分析

本文以符号学理论为工具,以符号语言是否可读可解为出发点,分别从场所符号和实体符号两个视角对LYONS事务所的作品进行了分析与解读,讨论了LYONS是如何采用不同的建筑符号进行理性编译,以创造出观者可读可解的具有个性特色的建筑。

从符号的存在方式看符号理论

符号实体论者都把符号看成由两个方面构成的静态的实体;而符号行为论者认为符号是一种行为,并将"人"、"环境"、"规则"等动态性要素纳入符号学之内。在各种符号的存在方式中,只有无可见的物理载体的符号和文本符号才是真正的符号存在形式。前者只能作为符号过程的要素而存在;后者还可以作为"自在"而存在,但这种存在其实与"符号学"无关。可见,"符号"总是存在于符号过程之中,符号的载体是一种实体,但是,符号是一种行为过程。

Geo-rough Space

Rough set is a new approach to uncertainties in spatial analysis.In this paper,rough set symbols are simplified and standardized in terms of rough interpretation and specialized indication.Rough spatial entities and their topological relationships are also proposed in rough space,thus a universal intersected equation is developed,and rough membership function is further extended with the gray scale in our case study.We complete three works.First,a set of simplified rough symbols is advanced on the basis of existing rough symbols.Second,rough spatial entity is put forward to study the real world as it is,without forcing uncertainties into crisp set.Third,rough spatial topological relationships are studied by using rough matrix and their figures.The relationships are divided into three types,crisp entity and crisp entity (CC),rough entity and crisp entity (RC),and rough entity and rough entity (RR).A universal intersected equation is further proposed.Finally,the maximum and minimum maps of river thematic classification are generated via rough membership function and rough relationships in our case study.