tmrm 中文意思是什麼
tmrm
解釋
四甲基羅丹明甲酯-
The famous algorithms include roam, vdpm, adaptive triangulation based quadtree and the improved algorithms of them, etc. however, the improvement of the present algorithms mainly focus on the selection of data structure which can speed up generation of the tmrm, few works were put into ameliorating the simplification criterion, hi fact, the simplification criterions used by the algorithms at present are constructed with only two elements which are the distance the vertex from the viewpoint and the roughness of terrain expressed by z coordinate
地形多解析度模型的生成演算法種類較多，著名的有：自適應優化格網演算法（ roam ） 、基於視點的累進格網法（ vdpm ） ，基於四叉樹的自適應剖分演算法以及基於各演算法的各種改進演算法等等。但目前人們對演算法的更新及改進主要是從數據結構的角度來考慮，對簡化準則沒有做實質性的改進。 -
Based on tmrm, critical technologies for real - time rendering of large scale terrain which includes tmrm generating technology, real - time rendering technology through streaming, terrain texture management and mapping technology are studied systematically in this thesis and some new results were obtained. there are many algorithms for generating tmrm models
多解析度模型是目前地形實時顯示的主要技術，本文以多解析度模型為基礎，對實現大規模地形實時繪制的關鍵技術，包括地形多解析度模型生成技術、大規模地形的流式處理技術及地形的紋理組織和映射技術等進行了系統的探討和研究。 -
However, the data structure used by this method is very large for its dependence on the physical partition of terrain, computation needed for generating the tmrm is also depends on the physical partition of terrain and at the same time, the tmrm can not be generating incrementally by this method. to resolve these problems, we put forward a new method which can realize the real - time rendering of large scale terrain with high performance by working through streaming
採用邏輯調入粒度對數據進行流式處理，使得模型生成的計算量也比較穩定，不再依賴于地形的物理分割粒度；該方法採用的多解析度模型還適合於并行處理模式，在具有多處理器的并行處理環境中，可將各數據塊分配給不同的處理器，這也是lindstrom的處理方法不具有的特點。 -
However, the second technology has the following disadvantages : first, data paging and tmrm generating are integrated into one modulate, next, data structures they used are very complicated and large, in addition, the work of data preprocessing is very heavy and frequently data paging need the server with high performance, at last this paging method is very difficult for implementation. as for the first technology, an important advantage of it is that the data paging and tmrm generating are not interdependent, so it will be more e asily applied in practice than the second one. as an implementation of the first technology, lindstrom introduced a method which uses quadtree and triangle binary tree to organize terrain data and adopt multithread mechanism to realize the data process
而第一種流式處理技術盡管一次調入的數據量稍大，但其數據調度與多解析度模型的生成在功能上是相互獨立的，如果處理得當更容易在實際工程中得到成功的應用，對於它的實現， lindstrom提出了利用四叉樹及三角形二叉樹進行地形數據組織並利用多線程機制進行數據調度與簡化的流式處理方法，但該方法的缺點是：其數據結構依賴于地形的物理分割，因此數據結構龐大；多解析度模型生成的計算量也依賴於物理分割的粒度，即物理分割粒度較粗時，數據范圍增大，計算量會急劇增加；該方法不能實現模型的增量生成。 -
Real - time rendering technology for large scale terrain is becoming a hot field which attracts more and more researchers " attention at present. it has been widely used in simulation of battlefield, vr, landscape programming of city, flood controlling, outdoor games, movie production, etc. the main method for terrain rendering is the terrain multiresolution model ( tmrm )
大規模地形的實時繪制技術是目前人們廣泛關注和研究的熱點課題，它的應用涉及到如戰場環境模擬、城市景觀規劃、虛擬旅遊、防洪減災、戶外游戲、影視製作、虛擬現實等眾多應用領域。
分享友人