fourier descriptor 中文意思是什麼

fourier descriptor 解釋
傅里葉描述運算元
  • fourier : n 1 傅立葉〈姓氏〉。2 Francois Marie Charles Fourier 弗朗瓦斯馬利沙利傅立葉〈1772 1837，法國空想...
  • descriptor : n. 【自動化】（數據處理中表示某一項目的）主字碼。
  1. Secondly, feature extraction methods based on target profile is researched. for segmented target, fourier descriptor is adopted

    其次，研究了用於目標輪廓信息特徵提取的方法;對已分割的目標提取輪廓信息，採用傅立葉描述符描述。
  2. It was concluded that the first sixteen harmonics of the fourier descriptor were enough to represent the primary shape of pear, and the shape identification accuracy could reach 90 % by applying the fourier descriptor in combination with artificial neural network

    研究發現該傅立葉描述子的前16個諧波的變化特性足以代表梨體的主要形狀，採用傅立葉描述子與人工神經網路相結合的方法進行果形識別的精確率可達90 % 。
  3. Moment fourier descriptor matrix and its using in invriant pattern recognition

    基於小波矩不變量的模式識別方法
  4. Firstly, fourier descriptor used to describe the object ' s shape is introduced to the extraction of feature of apple ' s shape. the boundary of apple is an obturated curve, distance between boundary point and centroid r ( k ) " is used as a function to express the 2 - d boundary in spatial domain. the fourier transform coefficients of the discrete sequences f ( h ) are spectrum values in frequency domain, and they compose feature parameters of shape

    首次將圖像分析理論中對形狀的傅立葉描述方法引入到對蘋果形狀的特徵提取中，果實邊界是一條封閉曲線，用邊界點到形心之間的距離長度r （ l ）作為空域中對二維曲線的表達函數，離散的函數值序列r （ k ） ~ l的離散傅立葉變換系數f （ h ）就是頻域中得到的頻譜值，可作為形狀的特徵參數。
  5. 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。
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