基于CG 技术的多维度传达设计及其在CIS 中的应用

随着时代的发展以及科学技术的进步,我国的计算机图形(CG)技术获得了长足的发展。事实上,该技术的推广运用实现了艺术设计行业的可持续发展,并由此对艺术设计形式、方法产生了一定程度的影响。本文基于此,分析探讨基于CG技术的多维度传达设计,并就该设计在CIS中的应用进行论述。     

解稳定化的鞍点问题的迭代法

1.引言 求解Navier一Stokes方程相对Stokes方程是比较复杂的.许多文献对Stokes方程的迭代解法都做了深入讨论[l,2,4,s].如何快速求解N avier一stokes方程仍然是当前讨论的热点.一种方     

小波与计算机图形学

小波分析是一种广泛应用于信息处理领域的数学分析工具。本文仅就小波在计算机图形学方面的应用作一简要介绍。     

A Study for the Environmental Design Supporting an Intellectual Activity

Japan is facing a demographic challenge of a falling birthrate coupled with an aging society that is already adversely affecting the economy. The situation is only expected to worsen as the working-age population continues to decrease. Well aware of this situation, businesses and offices are seeking ways to enhance the intellectual productivity of their workers. This paper explores environmental elements of work spaces that might stimulate intellectual activity. Using a CAD （AutoCAD） miniature garden program, subjects were asked to design a project room that is optimized for creative work using a certain number of elements--11 types of walls, 14 types of floors, 4 types of scenery, 3 types of furniture and 3 types of plantings--but the subjects were free to position and arrange these elements any way they want. The subjects were then interviewed using the evaluation grid method. Based on the results, we created an evaluation structure diagram by analyzing key words and phrases emphasized by subjects in the interviews. The overall evaluation structure represents a summary overview of all 30 subjects who participated in the experiment. This approach captures all the key elements of the office environment that might be used to stimulate intellectual activity of employees.     

Prediction of spectral reflectance factor distribution of color‐shift paint finishes

As the exterior paint colors of automobiles change the shade of color and brightness according to viewing angle, the appearance of a paint finish is expressed numerically by the reflection characteristic (i.e. reflectance) of paint surface. We figure out that the reflectance of most automotive paint finishes is best measured at the incident angle of 60° and the five aspecular angles of 10°, 18°, 28°, 40°, and 90° on the incident plane (Color Res Appl 2005;30:275–282). However, in the case of the so‐called color shift paint, which changes its paint finish appearance as a jewel beetle, depending on the light source location, the reflection characteristic can not be expressed accurately by conventional measuring methods. As the directions not included in the incident plane need to be taken into account, we have to measure at 48,139 points, changing all the incident angles and reflected angles. (It would take about 16 days.) We, therefore, tried to reduce the number of combinations of incident and reflected angles by analyzing the experimental data. Consequently, we reduced it to 1485 points (about 4 h). When we numerically compared our result to the result of all measuring points, we found that the color difference is 2.76 and therefore our method is practically usable. © 2007 Wiley Periodicals, Inc. Col Res Appl, 32, 378–387, 2007     

卡通渲染中边缘着墨技术原理研究

随着科技水平的发展和人们生活水平的提高，人们对于计算机图形学的要求逐渐走向多样化，个性化风格。有的人们要求逼真模拟真实世界的写实渲染，也有人喜欢卡通风格的非写实渲染。卡通渲染技术在国外已经开始使用，但国内产业目前还很少涉及。着色和着墨是卡通渲染的两大关键技术，本篇文章主要介绍着墨技术，讲述其原理，并对目前比较流行的边缘暑黑箍术拼轩综诛．鼻提出政拼方法．     

乙烯装置裂解气压缩机运行状态监测

本文对乙烯装置长周期运转过程中如何做好裂解气压缩机的状态监测进行了探讨。重点介绍了如何利用压缩机各段N因子和段间换热器的压差等参数对压缩机的结垢情况进行监测。并就该监测方法在实际中的应用进行了阐述。     

在局部空白区域内的图元布局

提出一种在封闭图形内，利用检测圆与封闭图形边界是否触碰的方法（简称圆形法），寻找适合的空白区域，适用于在已知图形上填写字符，确定新图形的位置。利用代数曲线在平面网格化后所具有的某些特点，决定搜索方向和步长．