極坐標演算 的英文怎麼說

中文拼音 [jízuòbiāoyǎnsuàn]
極坐標演算 英文
polar performance
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 標 : Ⅰ名詞1 [書面語] （樹梢） treetop; the tip of a tree2 （枝節或表面） symptom; outside appearance; ...
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 演算 : perform mathematical calculations; calculation; calculus演算器 exerciser
  1. Since pixel - level contrapose pixel coordinate, trigonometric function must be used to translate polar coordinates to pixel coordinate when the curve is described by polar coordinate. so research is very little on algorithms for generating this sort of curve by now

    由於逐點是針對象素坐標系而言，而對極坐標系下描述的曲線，在轉換到象素坐標系時要用到三角函數運算，因此目前很少提到對極坐標曲線生成演算法的研究。
  2. One retrieval method using rst invariant features based on lpm ( log - polar transformation ) transformation is proposed

    提出一種基於對數極坐標變換lpm （ log - polartransformation ）的不變特徵圖像檢索演算法。
  3. The high entropy of the real and imaginary parts of sar raw data makes lossless - coding compression techniques unfit for sar raw data. in chapter 4, some compression algorithms for sar raw data compression, such as baq, upq, bavq and wt - subbandcade are analyzed and discussed. an improved unrestricted polar quantizer ( upq ), which can enhance the performance of the quantizer is put forward

    第四章分別對塊自適應量化（ baq ）演算法、非約束式極坐標量化（ upq ）演算法、塊自適應矢量量化（ bavq ）演算法和小波變換子帶編碼演算法進行了分析和研究，並詳細討論了這些演算法在工程實際中的應用。
  4. The paper abstracts out the palmprint mainline characteristic owing to palmprint image gradation by the gray value characteristic property method, defining the online palmprint characteristic space with the form of the polar coordinate and compressing the dimension, at last we use the neural network to accomplish the design of identification authentication system with the on - line palmprint as the mating algorithm. based on this, a fast and reliable system of identification authentication can be built

    採用基於掌紋圖像灰度特性的方法提取出掌紋的主線特徵，以極坐標的形式定義在線掌紋的特徵空間並降維處理，最後用神經網路作為匹配演算法完成在線掌紋身份驗證系統的設計，以此為基礎建立了快速、可靠的新型身份認證系統。
  5. At first we improve the methods of iris image preprocessing, including an efficient arithmetic of evaluation iris images, an improving method of locating iris, calibrating iris image by the translation of coordinate and the circular shift of code, a eatimate of the background illumination by bicubic spline, and the image enhancement by the dual tree complex wavelet transform. next we designed the recognition arithmetic based on the location of the local maxima of the wavelet transform modulus. in the thesis lots of simulation are performed by means of matlab and visual c + +

    首先改進了虹膜預處理方法，實現了一種快速高效的虹膜質量評價演算法;設計了一種改進的兩步虹膜定位演算法，準確的定位了虹膜的內外邊界;利用坐標轉換和編碼的循環移位實現了對虹膜圖像的配準;利用雙三次樣條函數擬合虹膜圖像背景，去除了非均勻光照對虹膜識別的影響;使用二分樹復數小波方法增強了虹膜圖像的對比度;在識別演算法方面，本文設計了一種「基於小波模極值點位置的虹膜識別演算法」 。
  6. First of all, we bring forward the basic project of tadil, which adapts to combined operations. it is suggested to use tdma ( the abbreviation of time division multiple access ) as the working pattern and utilize the concept of mobile ad hoc network to construct the data link network. aiming at the impact of time delay on data link and the characteristic of cooperative combat under the command of director aircraft, this thesis applies a kind of kalman filtering algorithm in polar coordinates to compensate the error of time delay, and then does the transformation of target motion parameters to obtain the current information of target

    本文結合空軍裝備部某「十五」預研課題，圍繞著戰術數據鏈、多機協同多目標攻擊、超機動攻擊、空對地攻擊這四個方面展開了一系列的研究工作:本文首先給出了適應三軍聯合作戰的戰術數據鏈系統的基本方案，建議採用時分多址的工作模式，並利用移動自組織網路的概念構建數據鏈網路，同時針對數據鏈傳輸信息的時間延遲特性和指揮機指揮下的多機協同作戰特點，應用一種極坐標系下的卡爾曼濾波演算法對該傳輸延遲誤差進行補償，並在此基礎上進行目標運動參數的轉換，以獲得目標相對于某無人機的當前運動信息，且利用模擬驗證了方法的有效性。
  7. A kalman filtering algorithm in polar coordinates

    極坐標下卡爾曼濾波演算法的研究
  8. A combined neural network and genetic algorithm with solving stability safety of homogeneous slope was proposed and the finite element method is applied to analysis the progressive failure process of the slope and the maximum equilibrium theory, requests out stability safety of homogeneous slope with the smooth arc radius of difference with the difference below the level coordinate of arc peak, utilizing the neural network algorithm to establish slidng the nonlinear mapping relationship between level coordinate of arc radious and arc peak, being adapted the neural network algorithm to look for along the minimal stability safety of homogeneous slope and corresponding arc radious and arc peak

    提出了求解邊坡穩定性安全系數的神經網路與遺傳演算法。該方法採用有限元分析和極限平衡理論，求出不同的滑弧半徑和不同的弧頂水平坐標下的邊坡穩定性安全系數，利用神經網路演算法建立滑弧半徑和弧頂水平坐標與安全系數之間的非線性映射關系，採用遺傳演算法搜索邊坡的最小穩定性安全系數及相應的滑弧半徑和滑弧中心坐標。
  9. Through simulation, validate the efficiency of the polar format algorithm, in case of bastatic spotlight - model sar

    最後通過模擬實驗，驗證了雙站聚束sar極坐標演算法成像的有效性。
  10. This matching algorithm can reduce differences during translation, rotation, and zooming under the noisy or distorted condition. to do this, firstly, select optimum matching - origin - pair in the polar coordinates, then the number of matching pairs can be acquired

    本演算法能夠減小指紋平移、旋轉誤差，在有噪聲和形變情況下，先優選出極坐標原點對，進而求出匹配對的數目。
  11. In our approach, the approximated center of object is selected from the references images and a polar - coordinate system is set up for the object

    該演算法充分利用了極坐標表示的簡潔，將三維求交重建運算轉化到球面上，獲得了較高的建模效率。
  12. In this paper, we design a watermark algorithm to resist geometric attacks, which used lpt ' s characters to resist the scale, translation attack and used the exhaustive search method to oppose rotation attack

    本文利用數極坐標變換的性質，消除平移和縮放對水印的威脅，用搜索的方法來應對旋轉攻擊，設計並實現了一種新的抗幾何攻擊的水印演算法。
  13. New - style particle swarm optimization algorithm based on polar coordination system and complex number operation

    基於極坐標復運算的粒子群優化演算法
  14. The major work implemented in this paper is presented as follows : ( 1 ) an improved discrete fast polar fourier transform algorithm ( called dpft for short ) is proposed which fast and effectively computes the 2d discrete fourier transform in polar coordinate systems

    論文的工作主要包括：一、提出一種改進的離散極坐標付立葉變換（ dpft ）的快速演算法，並在此基礎上，提出一種基於dpft的紋理分類演算法。
  15. Because the fourier transform is widely applied in engineering and the polar coordinate systems has superiority in data " rotation and scaling, the improved dpft algorithm can also be implemented in many fields such as image registration, image retrieval and radar signal processing

    由付立葉變換在工程應用中的廣泛性和極坐標系在處理二維數據旋轉和尺度變換上的優越性，該演算法也可用於圖象配準、圖象檢索和雷達信號處理等應用領域。
  16. According to the first means and disadvantage of classical seal image registration methods, a double - level registration method, which includes a projection convolution in polar coordinates in rough registration level and a heuristic search in precise registration level, is used to complement the precise registration

    對第一類特徵，本文針對經典演算法的缺陷，提出利用極坐標投影卷積和啟發式搜索相結合的雙層配準策略進行印鑒圖像的配準。
  17. In normalization of the iris image preprocessing stage, the iris image is normalized into a 64 1024 grey pixel image. after normalization, the normalized image is divided into three parts and then these parts are divided into eighteen bands

    接著，在虹膜圖像預處理的歸一化演算法中，本文採用直角坐標與極坐標映射理論把定位后的圖像歸一化到一個64 1024的灰度矩陣中。
  18. In the same way, the symplectic difference method is put up in pole coordinate system. it is programmed and applied in the solution of cylinder problem and bent girder problem successfully, too

    隨后，又在極坐標系下建立了彈性力學混合方程的辛差分格式；同樣編程實現了演算法結構，並計算了圓筒問題和曲梁問題等兩個具體算例，取得了較好的效果。
  19. ( 3 ). the disquisition especially introduces the algorithm of pfa, analyzes the means of dechirps and removing rvp, discusses the range migration. at last discusses the influence to the image forming performance

    （ 3 ）研究了極坐標格式演算法在雙站聚束式合成孔徑雷達成像中的應用，分析去調頻技術、去rvp處理以及距離徙動等問題。
  20. Instead of 640 fibers, it realized the large area multi - object observation by use of 4 000 fibers. according the request of project, mechanical character, controlling and positioning method were firstly analysized. then through studying geometry modeling, convex hull, polygon collision test and other arithmetic, the positioning, controlling and collision test method are proposed which are suitable for radial coordinates unit

    本文根據工程的要求，首先對光纖定位裝置的機械特徵、控制方式、定位方法做了分析，然後通過研究現有的幾何造型、凸包構建、多邊形碰撞判斷等演算法理論，研究出適合極坐標運動單元的表示、控制、判斷方法，並最終在虛擬系統中實現了4000個光纖定位單元的存儲表示、定位控制、碰撞判斷（即實時監控） 。
分享友人
分享到 Line

分享到臉書