invariant field 中文意思是什麼
invariant field
解釋
定長欄位, 固定域-
In order to save the cost of the home robot, the robot with single camera as its outer sensor has become a popular research field during the past few years. we need a method to describe the environment so that the single camera can be used effectively. in this paper a novel algorithm named scale invariant feature transformation ( sift ) is used to extract the key points of the environment
為了利用單目視覺傳感器，需要一種相應的外界環境的描述方法，本文採用一種比例縮放不變的特徵點（ sift特徵點）來描述環境， sift特徵點具有比例縮放不變性，旋轉不變性和部分仿射不變性等優良性能，從而具有高度的可辨別性。 -
In the part sea area of the oujiang estuary which has complicated landform, the different ko are adopted in the control equations of flow and salinity process to work out the process of tide level, averaged salinity and the flow field using the invariant flow and the real process of tide level as the boundary conditions. the comparison and analysis among the computed results, the theoretic results and the computed results of two dimensional numeric model in a large area indicate that the model is applicable
以地形復雜的甌江河口局部海區為例，分別採用給定恆定流以及實際潮流過程作為邊界條件，對水流鹽度過程採用不同的k _ 0形式進行了計算，給出了潮位過程、平均鹽度過程以及流場的逐時計算結果，將計算結果與相應的理論結果、實測資料以及大范圍二維數學模型的計算結果進行了驗證及細致分析，得到了較為滿意的結果。 -
Finally the paper emphatically introduces the mlfma ( multilevel fast multipole algorithm ). based on hybrid field integral equation the formulation of computation for the electromagnetic scattering of three - dimensional object is derivated. then the optimization of invariant terms and the expression of every child cube is analyzed during the electromagnetic scattering calculation when using the mlfma
文章最後引入多層快速多極子法，從混合場的積分方程出發，推導出多層快速多極子法計算三維物體電磁散射的公式，分析了多層快速多極子法計算三維物體電磁散射過程中不變項計算的優化和編程時每個小立方體的表示方法。
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