Sts produces substantially better visual results . sts is faster than lic ( linear integral convolution ) texture - based method . 2 ) in order to overcome the lic ' s shortcoming that only presents direction of the vector field , multi - granularity lic and image blend technique which can present the magnitude and direction at one time are proposed 2 )提出了多粒度lic紋理和圖象混合技術(shù),它們能很好地同時表示矢量的大小和方向,從而克服了lic紋理方法只能表示矢量方向而不能表示矢量大小的缺點。
In this paper , the concepts , the historical background , the importance and current application of scientific computing and visualization of scientific computing are introduced and the visualization of computational detonation mechanics is specially expounded . based on the sumarization of the visualization software visc2d and visc3d directing at the mmic ( multi _ material in cell ) , the key point of the improvement and the research contents are listed . based on the basic visualization reference model and the data file format of mmic , the file format of vector data is defined . the 2 - d data field visualization technology is described in detail . include the visualization of scalar field and vector field . the weak points of the visc2d software is overcome , and we propose the full - frame coloring mapping method and the visualization of the vector data using the clic ( coloring _ noise line integral convolution ) . in addition , the method to draw and display shock wave by edge probing operator is introduced . in the design of the program , in order to overcome the shortcoming of visc2d with sdi ( single document interface ) , the software vsv ( visualization of scalar and vector ) with mdi ( multi document interface ) is designed . compared with visc2d , the advantage of vsv includes : ( l ) vsv is a mdi applied software which can be used to view various kind of data , ( 2 ) vsv resolves the flash during displaying moving images which are produed by full - frame coloring method used to the visualization of scalar fields , and ( 3 ) vsv can be used to visualize vector field such as velocity . at last , the visualization of the output data from mmic in explosion and shock is realized by vsv 首先簡要介紹了科學計算與科學計算可視化的概念、歷史背景、意義及應(yīng)用現(xiàn)狀,重點說明了計算爆炸力學中的可視化問題,在總結(jié)多流體網(wǎng)格程序mmic的可視化軟件visc2d和visc3d的基礎(chǔ)上提出了改進要點和本文的研究內(nèi)容。在介紹可視化基本參考模型和mmic程序的數(shù)據(jù)文件結(jié)構(gòu)的基礎(chǔ)上,給出了矢量數(shù)據(jù)文件的結(jié)構(gòu),詳細闡述了二維數(shù)據(jù)場的可視化技術(shù),包括標量場和矢量場的可視化,針對原visc2d軟件的不足,給出了改進方法,提出了全幀著色映射方法和用于矢量數(shù)據(jù)可視化的基于噪聲著色的線積分卷積方法,以及提出了利用邊緣檢測算子提取和顯示沖擊波的方法。在程序設(shè)計上,針對原visc2d軟件只適用于單文檔窗口的缺點,本文利用多文檔mdi窗口,研制了標量場與矢量場的可視化軟件vsv ( visualizationofscalarandvector ) 。
Line integral convolution ( lic ) is one of texture - based methods for vector field visualization . even in the vector direction changing sharply fields , the method can show the direction of the vector field well , and display details of the vector field better . in addition , it can fully disclose the relativity among every spot of the vector field 線積分卷積( lineintegralconvolution , lic )方法是一種基于紋理生成技術(shù)的矢量場可視化映射方法,線積分卷積法能連續(xù)反映場中各點切矢,即使在矢量方向變化很大的區(qū)域,也能揭示出矢量的方向,可以較好地表達出矢量場的細節(jié)。