geometrical moment 中文意思是什麼

geometrical moment 解釋
幾何面矩
  • geometrical : adj. 1. 幾何學的，幾何圖形的。2. 按幾何級數增長的。adv. -rically
  • moment : n 1 一轉眼功夫 片刻 瞬息 剎那；時刻。2 時機 機會；場合；危機；當前。3 重要 緊要；【哲學】要素 契...
  1. First, resistance to geometrical distortion was obtained by using moment normalization ; second, we focus on the phase of fourier - mellin transform. before detecting watermark, synchronization could be retrieved by using the phase information. to eliminate the influence of pixel value distortion generated during print / scan process, a dft - based robust watermark algorithm was designed, which could successfully detect watermark from a severe distorted image

    另一種思路是根據圖像經過旋轉、縮放、平移后，其傅立葉?梅林變換域只有相位受到影響的特點，從其相位中提取幾何失真信息，然後再進行相應的失真補償，從而消除幾何失真的影響；對于列印掃描過程產生的像素值失真，本文也提出了一種基於dft的魯棒性演算法，能在較嚴重的圖像失真情況下，成功檢測水印。
  2. This new method has the capability of calculating complicated 3d grain burning surface. dealing with evolving interface of complicated material and topology change ( splitting. breaking. merging ), based on level set method and burning surface process law. this technique can get accurate area of burning surface each moment and data of geometrical structure that provide access to examination of grain change in the srm working process. 2

    結合固體火箭發動機燃面推移規律，在等值面函數法基礎上開發的裝藥燃面演算法能夠成功計算任意復雜三維裝藥燃面，並且具有處理復雜物質邊界及其拓撲結構發生變化（如分裂、破碎、合併）的能力，能夠準確計算出發動機工作過程中各個時刻裝藥的燃燒面積，同時輸出裝藥幾何構形數據直觀地觀察裝藥的變化情況； 2
  3. The ansys finite element program is used to analysis the over - all stability of portal frames, with considering axial force, moment, and geometrical nonlinear effect. the the accurate effective length factors of gable portal frames are got

    用ansys程序對山形門式剛架進行了整體穩定分析，通過考慮軸力、彎矩、和結構的幾何非線性效應，得到了山形門式剛架精確的計算長度系數。
  4. In the research, the system captures real - time images based on the sdk, and saves the image data into buffers which are created by the system. the important and primary parts are got using the programs which are designed to process and analyze the image data in the buffers, and the geometrical features such as area, perimeter, moment invariants and fourier descriptor, are measured. the parts are classified according to the threshold of each geometrical feature with the image database

    課題研究中，在設計的試驗平臺上，通過攝像頭和sdk開發包對零件進行實時圖像採集，並將其存入開辟的數據緩沖區內;由設計的圖形處理模塊對緩沖區內的數據採用各種演算法進行分析處理，形成研究中感興趣的重要圖像;調用圖像識別判斷模塊，主要提取了零件的周長，面積，慣性矩，傅立葉描繪子等形狀特徵參數，根據定義的識別函數，並結合圖像數據庫，進行零件識別或缺陷檢測。
  5. This method is a novel, simple method calculating the ocean wave force on floater. you can find the rule between ocean wave force and time at any moment, and get the biggest ocean wave force on floater if you give the actual instance of the sea, the geometrical dimension of the floater and the depth of the floater in the water

    這種計算方法是一種新穎的計算漂浮體上波浪力的簡單方法，在計算波浪力的過程中，只需要給出實際海況，浮子幾何大小，以及浮子吃水深度就可以求得波浪力隨時間的變化規律，並可求得浮子所受的最大波浪力。
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