quadratic surface 中文意思是什麼
quadratic surface
解釋
二次曲面-
With the basis of the system of nonlinear equations which is established by minimizing the error quadratic sum of theoretical and actual shaded value of the points on the typical surface, the parameters of the illumination models can be firstly determined by means of the least - square procedure
首先，以典型曲面上各點的理論灰度值與實測灰度值的誤差平方和最小為目標建立非線性方程組，以非線性最小二乘理論為基礎，通過解非線性方程組確定光照模型各個參數值。 -
With the basis of nonlinear least squares theory, the system of nonlinear equations is established by minimizing the error quadratic sum of theoretical and actual gray level of the points on the typical surface, and the parameters of the illumination models can be determined by means of the least - squares procedure
以非線性最小二乘理論為基礎，以典型曲面上各點的理論灰度值與實測灰度值的誤差平方和最小為目標建立非線性方程組，通過求解非線性方程組來確定光照模型的各個光照參數。 -
Firstly part of quadratic term of taylor series is chosen ; a low - dimension surface is used to approximate limit state surface ; and the modified reliability formula is derived
首次選取泰勒級數的部分二次項，用一個距原點最近點處擬合的超低維曲面近似極限狀態面。 -
The angle spectrum of inputting optical signals is received by the input surface of arrayed waveguides. whereas the diffraction process of light beam outputed in slab waveguide is a process of " composing frequency and generating image ". the reason that fraunhofer diffractive pattern can be gained on outputting waveguide surface is that output ends of arrayed waveguide distribute on the arch structure which leads bent phase factor to offset the quadratic phase factor in fresnel diffraction
輸入平板波導內光束的衍射過程是「分頻成譜」的過程，在陣列波導的輸入面接收到的是輸入光信息的角譜；而輸出平板波導內光束的衍射過程則是「合頻成像」的過程，正是由於陣列波導輸出口排列分佈在圓弧形結構上，其彎曲位相因子消去了菲涅耳衍射中的二次位相因子，從而在輸出波導面上能夠得到夫瑯和費衍射圖樣。 -
Thirdly, the principles of nurbs curve and surface are used to the modeling of complex object, and a protruding quadratic programming algorithm for reconstructing reference points of nurbs curve
第三，採用了nurbs曲線、曲面技術對復雜目標建模，給出了反求nurbs曲線控制點的凸二次規劃演算法。 -
Especially when wang - ball forms are used, the time complexity for evaluating would be reduced from cubic to quadratic, of the degree of the surface
特別當採用wang - ball曲面時，演算法的時間復雜性將從曲面次數的立方降低到平方 -
Second, a new definition of fairness is put forward. it can satisfy wants of fairing surface accompanied by better algorithm, less calculation and easier realization. third, a new algorithm depended on " blending of two quadratic surfaces " is constructed
其次，本文給出了「光順」的全新概念，使其在最大限度簡化演算法、減小計算量的基礎上，滿足曲面的光順要求，並且更適用於計算機實現。 -
Nowadays, general fitting methods are based on the character equations of quadratic surface to implement. for it is so complicated that a lot of fitting software exist a lot of restrict conditions
目前的通用方法都是基於二次曲面的特徵方程進行擬合，由於特徵方程求解復雜，因此這些擬合軟體在進行曲面擬合時均存在很多的限制條件。 -
Massive simulation experiments have proved the correctness and possibility of the fitting algorithm of quadratic surface which is based on general equation
大量的模擬數據實驗表明，本文提出的基於一般化方法的標準二次曲面擬合演算法的正確性和可行性。 -
As an important approach for improvement of productive efficiency and shape design, more and more attention is paid for reverse engineering, fitting of quadratic surface is one of its components
作為提高生產效率和改善造型設計的重要途徑，逆向工程受到越來越多的重視，空間二次曲面擬合是其重要組成部分之一。 -
Jacobi transformation is used to find correlations among coefficients. then a method to transform general quadratic surface to formal quadratic surface equation is introduced. the location, direction and size of quadratic surface are obtained
論述了運用jacobi變換方法來處理系數相關性問題，實現了二次曲面的一般方程的求取，並探討了將通用系數形式轉化為標準二次曲面方程的方法，從而求得二次曲面在空間的位置、方向和大小。 -
There are two features used in first method : area distribution of 3d model surface and latitude orientation average radius distribution. quadratic form distance function has been applied to calculate the similarity of two feature vectors and two passes are needed to search database in first method
第一種檢索技術使用了兩個特徵：面積分佈和緯度方向平均半徑分佈，在相似度計算使用了二次方程式距離計算公式，數據庫檢索採用了分步檢索方法。 -
Given a response surface equation in quadratic form, the six sigma black belt will be able to compute the stationary point
給出一個二次方程式形式的響應曲面公式， 6西格瑪黑帶應能計算出駐點。
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