geometric algorithm 中文意思是什麼
geometric algorithm
解釋
幾何演算法-
System structure model based on simulation database is presented, by which realize effectively to integrate nc geometric simulation with physical simulation. 2. in the nc geometric simulation and nc verification, a partial rendering algorithm is improved by using dynamic oob ( oriented bounding box )
2 .在幾何模擬方面，改進了幾何模擬局部刷新演算法，提出動態方向區域法，使在加工模擬過程中可以進行旋轉、放大和縮小等動態操作，便於了解工件在模擬加工過程中的具體情況。 -
Computer aided geometric design, 1989, 6 : 323 - 358. 7 seidel h p. symmetric recursive algorithms for surfaces : b - patches and the de boor algorithm for polynomials over triangles
2三角b樣條曲面的曲率分佈具有「節點線」現象，也就是說在其曲率在三角面片的邊界上有「聚集」現象。 -
When refining the candidates, the author gets rid of traditional complicated geometric calculating. this thesis sets forward a new query model based on character. this model changes two - dimensional spatial object into one - dimensional string to process, and therefore turns two - dimensional disorder query into order query by using heuristic querying algorithm so that bisearch is used to improve query efficiency greatly
在求精時，摒棄了傳統的復雜的幾何計算，本文提出了一種基於字元的查找模式，將二維的空間對象轉化為一維字元串進行處理，並利用啟發式搜索演算法將二維空間上的無序查找轉化為有序查找，從而利用折半查找法，大大提高了查詢效率。 -
To solve the inaccuracy problem caused by the two existing methods ( average end - area method and prismoidal method ) used for the calculation of roadway earthwork volume, this paper puts forward a new concept of the 3 - dimensional algorithm that takes all the roadway geometric design procedures as a kind of geometrical operation between the ground model ( original terrain model ) and the roadway model ( designed model ) under certain constraints, and then presents a complete 3 - dimensional algorithm of roadway earthwork volume as well as its executable computer program. the algorithm benefits from the re - triangulation technique of constrained delaunay triangulation ( cdt ), which can yield a true volume value theoretically. through a number of practical tests covering varied intervals between adjacent cross sections, it is proven to possess a higher accuracy compared with that of traditional methods. all the work involved in this paper indicates that the 3 - dimensional calculation of roadway earthwork volume is feasible, more accurate and should have further application in practice
針對目前廣泛使用的道路土方量計算方法平均斷面法和稜柱體法計算不準確的缺點，提出了三維土方量計算演算法的概念.該演算法以帶約束的狄羅尼三角化（ cdt ）為技術核心，認為所有道路幾何設計過程都是地面模型和道路（設計）模型進行幾何運算的結果.基於此，本文設計出相應的演算法步驟，同時完成了相應的軟體開發，使得該三維演算法能和傳統的方法進行對比.此外，結合工程實例，採用了不同的道路橫斷面間距對三維計算方法和傳統方法的誤差進行比較、分析.結果證明三維演算法具有更好的精度，該演算法可用於道路、場地平整等工程土方量計算 -
Concrete algorithm is firstly recognizing 2d feature obtained from geometric entities, then on the instruction of the shape analysis combining with the projective rulers of mechanical drawing, matching three 2d view features, creating 3d basic model, forming a operation list, finically finished 3d reconstruction
在重建演算法上，利用提取的幾何實體進行二維視圖特徵的識別，在形體分析法的指導下，結合制圖中的投影原則匹配三維基本形體，最後按照基本體素的運算序列經過復雜的布爾運算完成重建。 -
On the basis of the theory of fractal geometry, the fractal dimension characters of ae signal at different tool wear states were analyzed, an algorithm was provided to decide the scale range which is necessary to calculate the dimension of non - fully - fractal form. the experiments showed that the fractal dimension of ae signal is slightly effected by the changes of cutting parameters ; the variance of the fractal dimensions, which reflects the geometric characters of ae signals, has the same tendency as that of the flank wear, the monitoring system, which takes the fractal dimension of the ae signal as the feature, can identify the different tool wear states more correctly under different cutting conditions
以分形幾何理論為基礎，對刀具不同磨損階段聲發射信號的分形特徵進行分析.提出了計算非完全分形體信號波形的關聯維數時尺度范圍的確定方法，分析了聲發射信號在刀具磨損過程中分形維數的變化特性.刀具磨損切削實驗數據表明，聲發射信號的分形維數受切削參數變化影響較小；分形維數反映了聲發射信號的幾何特徵，其大小能較好地反映刀具的不同磨損狀態.實驗結果表明，該方法能正確地實時在線監測刀具的不同磨損狀態 -
Finally, a method is put forward to construct the nurbs curves on sphere, which extends the de boor recursive algorithm in r3 to one on the sphere by replacing the geodesic distances for the lines and studies their many geometric properties analogous to those in euclidean spaces, such as the differential property, the local property, the parameter invariance under a projective transformation, and so on
兩種方法均給出誤差估計，使逼近螺線可達到任何預先給定的精確階。最後，給出球面nurbs曲線生成演算法：用球面上測地線? ?劣大圓弧代替直線段，將歐氏空間r ~ 3中的deboor遞推演算法推廣到球面上構造麯線。 -
Elementary studies parallel algorithm of posynomial geometric programming
正項幾何規劃并行演算法初探 -
A polynomial time algorithm in positive define geometric programming with constraints
約束正定式幾何規劃的一種多項式時間演算法 -
The main contributions are as follows : first, geometry algorithm for determining position with two satellites is studied. three parameters including intersection angle, pitching angle and visual angle are selected to describe the geometric relationship of observation intersection
其主要研究內容包括:推導了雙星定位的幾何方法;根據目標和兩顆衛星的空間位置關系，設定了三個角度參數來描述雙星定位的精確度。 -
In chapter 6, the usage of floater ' s algorithm on a disk is discussed which is for geometric reconstruction of surface with four edges using double cubic b - spline surface, and the algorithm is generalized to a cylinder and a mobius
第六章討論了floater關於四邊拓撲曲面的雙三次b樣條幾何重建方法在圓一摘要浙江大學博士學位論文一盤拓撲曲面上的應用，並將其推廣到平環與mbbius帶上。 -
The algorithm uses the geometric feature of a single convex rice kernel to search the concave regions merged with rice kernels during the region growing with scanning and disconnect the regions at the concave positions in image
該方法充分利用了單個米粒圖像區域為凸性區域這一幾何特點，通過區域增長的方法在圖像中尋找由凸性米粒靠接在一起所形成的融合凹性區，並從凹處將融合區域分離開來。 -
It has been tested that this algorithm can successfully resist geometric distortion
實驗證明該演算法對幾何形變具有很好的頑健性。 -
The parametric speed of the curve is firstly approximated by the bezier polynomial which takes the lengths of control polygon ' s edges of the direction curve of normal as bezier coordinates. then the corresponding geometric offset approximation algorithm is given. moreover, an offset approximation with high precision is obtained by degree elevation of the direction curve of normal
首先利用以法矢方向曲線的控制多邊形邊長為b zier縱標的b zier多項式來逼近曲線的參數速度，給出了相應的幾何等距逼近演算法，進一步結合法矢方向曲線的升階獲得了高精度逼近 -
The final work of the paper is evaluating image quality. as for images after radiometric calibration, 3 - dimention noise analyzing method is introduced. for image after geometric calibration, three performance parameter are used to evaluate the images, and algorithm of the paper is validated
給出了常用的輻射質量評估方法；對輻射校t后的圖像，引進了三維噪聲分析方法，起到了對圖像輻射質量和輻射校計方法的評估作用；對幾何校正後的圖像，採用並計算了三個性能參數，驗證了論文採用的校正演算法的有效性。 -
Firstly explicit algorithm is found that give the unique cubic ph that solves a geometric hermite interpolation problem
首先本文給出了三次ph曲線g ~ 1hermite插值問題的演算法，這個演算法是用復數形式表示的，使插值公式比較簡單。 -
Secondly, a algorithm of image registration based nprod ( normalized product ) and gauss - pyramid decomposition is presented, which based on the hypothesis that there is aimier geometric transform among images to be matched, and the a igorithm is proved to be precise and effective in mul - modal image registration, but it ' s count is great
論文的第二部分介紹了圖像匹配技術的基本原理和常用方法，在此基礎上提出了基於歸一化積相關和高斯塔形分解的配準演算法。該演算法假定待配準的圖像對之間存在埃米爾特變換，能夠實現多模態圖像間的精確配準，但是計算量較大。 -
It firstly utilizes the characteristic of layout geometric information to partition the global network into some sub networks. after these sub networks are compressed by cholesky factorization, the sub networks edge nodes are combined with other nodes. calculating the final linear equations group, the algorithm can be very effective
演算法首先利用版圖幾何特徵，按最小割原理將電源地網劃分成子網，利用對稱正定矩陣cholesky分解壓縮子網內點；將子網等效成與網路其它部分連接的結點集的等效網路，最後通過計算壓縮后的網路，獲得線性方程組求解答案。 -
Accordingly, the origin of geometric distortion is first introduced in this paper, and through analysis, a geometric correction algorithm is presented. applying the transformation of three - dimension - projection, image series are finally converted into the same coordinate system
論文首先介紹了圖像幾何畸變的產生，並通過分析得到幾何畸變的校正演算法，通過三維投影變換把系列航空圖像變換為同一坐標系（地面坐標系）下的幾何畸變校正圖像。 -
Study on systematically geometric algorithm of landsat7 image
7圖象系統級幾何校正演算法研究
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