zero contour 中文意思是什麼
zero contour
解釋
零等高線-
The findings show that there exists overlap between macroscale convergence and warm advection if the degree of clock - wise turn dosen " t keep constant on both sides of zero doppler velocity contour about the near range of the observational site. the overlap produces vertical vapor transport and upward convergence movement favorable for formation and continuation of rain gush
結果表明：零速度帶在測站近距離兩側的彎曲程度不一致是暖平流與大尺度輻合運動的迭加所造成，這一結構為暴雨產生和維持提供了有利的水汽垂直輸送和輻合上升運動。 -
The images to be processed is obtained in condition of nonuniform illumination. a threshold surface by interpolating zero - crossing points is used to segment image to avoid influence of nonuniform illumination. then the destination region can be detected using the method of pattern recognition and the method advoid the influence of nonuniform illumination effectively. the contour description is obtained by fitting at least squares principle
論文在分析當前圖象分割的現狀和趨勢的基礎上，採用基於log運算元的動態閾值選取對圖象進行分割，以克服非均勻光場給圖象分割帶來的影響，然後通過對區域特徵的提取和分類準則的確定，準確識別出目標區域。
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