centroid 中文意思是什麼

centroid 解釋
n. 名詞 [物]矩心；質心，質量中心（＝centre of mass） 形心曲線；心跡線。

  1. A new standardization method is proposed to solve the problem of the distorted image recognition, which is that the image ' s centroid was gotten based on the pixels total value of the whole image, and then the largest apothem and the rotated angle were obtained by the distance of the centroid and the image brim, last the object and the reference image adjusted the entirely same images in the scale and the rotated angle according to the uniform standardization

    由此，提出了基於圖像質心和最長邊的歸一化圖像處理新演算法：根據圖像像素總值求取圖像質心，根據質心和圖像邊緣輪廓點之間的長度求出圖像的最長邊和旋轉角度，然後根據統一標準將目標圖像和參考圖像調整至同一長度和旋轉方向的完全相同的圖像。
  2. Centroid of asymptotes

    漸近線的形心
  3. In the fully plastic condition, the neutral axis does not necessarily pass through the centroid.

    在全塑狀態下，中性軸不一定需要通過形心。
  4. If this load centroid is behind the elastic axis of the wing structure, then a nose-down twist of the main wing surface results.

    如果該載荷重心在機翼結構彈性軸之後，則引起主機翼表面前端向下的扭轉。
  5. At supersonic speeds the control load acts mainly on the deflected surface itself, and hence has its centroid even farther to the rear.

    超音速時操縱載荷主要作用在偏轉面本身上，因此它的作用中心甚至更加靠後。
  6. The study on the centroid of the lattice point in the plane

    平面格點形心問題研究
  7. Centroid position of focal spot of laser beam with aberration

    畸變光束的焦斑質心位置
  8. Doppler centroid estimation of sas based on radon transform

    變換的合成孔徑聲納多普勒中心估計
  9. Correction of torpedo ' s centroid eccentricity with counterweight technology

    魚雷質心配重糾偏技術的實現
  10. Probing into centroid shift of governmental function under globalizing

    全球化趨勢下政府職能重心轉移探析
  11. Centroid of volume

    體積矩心
  12. 3. characteristic points are established through projecting images of regular points to measured surface. space dimidiate coding method which is called rough match and correlation technology, centroid technology, corner detect technology which are called precise match are used to acquire characteristic points accurately

    將空間規則點圖案投射到被測物體表面形成特徵點，然後利用空間二分編碼粗略獲得空間特徵點（稱為粗匹配） ，再利用自相關技術、質心技術和角點技術精確獲得空間特徵點的圖像坐標（稱謂細匹配） 。
  13. We presented a novel method of searching for similar fragments of 3d curves, with this method, a hash vector is associated with each fixed - length fragments of 3d sherd. each vector consists of low frequence component of fourier - like spectrum for the distance between profile curve and the centroid

    討論了基於hash矢量和fourier變換的輪廓曲線匹配方法，在匹配中不要求一段輪廓線與另外一段輪廓線完全匹配，而是把它們分成很多子段，再用這些子段來進行匹配。
  14. Centroid estimation algorithmand correlation function algorithm are classical methods

    質心估計演算法和相關函數法是估計相對時移的經典方法。
  15. In this thesis a fuzzy control system used in voltage and reactive power auto regulatory device is designed based on the nine - zone controlling principle. in the fuzzy system, the fuzzy reasoning is mamdani method and the antifuzzy is centroid method. the software matlab is used to calculate the fuzzy system. the fuzzy system divide the voltage - reactive pane into fuzzy zone, in this way the domain - swing between closing domain is eliminated

    論文對電壓無功綜合控制技術進行研究，針對傳統九區域分區控制方法無視電壓與無功耦合的缺點，結合變電站電壓無功控制的實踐經驗，在傳統控制方法上引入模糊控制，設計了基於模糊控制的電壓無功綜合控制系統。模糊推理系統中採用mamdani型推理，非模糊化採用重心法，設計中使用matlab進行輔助設計和離線計算。
  16. We use signed distance and centroid to defuzzify the total cost in the fuzzy sense in fuzzy inventory without backorder

    利用有號距離和形心將無缺貨補貨的模糊庫存的總成本利用有號距離和形心解模糊化。
  17. The gpss have one output and two inputs which are speed error and its derivative. selecting triangular function as fuzzy variable ' s membership function, mamdani max - min synthetic method as fuzzy inference method and centroid method as denazification method, fuzzy control rules are given according to the control expectation of governor and the experience of operating staff

    這種模糊gpss採用二輸入單輸出結構，以機組轉速誤差及其導數為輸入量，以三角形函數作為模糊量的隸屬函數，根據水電機組穩定控制要求和操作人員的經驗制定控制規則，以mamdani的max - min合成法和重心法分別作為模糊推理方法和清晰化方法。
  18. A new method to estimate doppler centroid and doppler rate applicable to real flight condition is proposed

    該方法設置飛機速率和脈沖重復頻率比為常數，保證方位向接收信號均勻空間取樣，使用實時最小二乘擬合演算法。
  19. By using the indexes of the landscape pattern : landscape diversity index, landscape dominance index, landscape fragmentation index, distribution centroid and extended dimension, the thesis presents the dynamic change of wetland spatial pattern from 1987 to 2002. the thesis is discussed from the following parts : part 1 : preface, the summary of the wetland study background and the wetland landscape pattern change study in home and overseas

    通過採用景觀多樣性指數、優勢度、景觀破碎化指數、分佈質心和擴展度等景觀空間格局指數，比較系統地分析了近20年豫境沿黃濕地景觀空間格局變化。本文包括以下八個部分：第一部分為引言，簡要回顧了濕地研究背景和國內外濕地景觀格局變化研究的狀況以及本文研究的意義。
  20. The excursion of centroid position of focal spot may be easily acquired with the centroid position expression of focal spot

    利用焦斑質心位置表達式，可分析和確定由於振幅調制和相位畸變導致的質心位置偏移。
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