snake line 中文意思是什麼
snake line
解釋
滑車尾繩-
He noticed the remains of a snake which was wound round the electric wires of a power line.
他看到一條死蛇纏在一根一萬六千伏的高壓電線上。 -
The line continued to snake through the terminal throughout the morning, but crowds were orderly, and officials were making every effort to accommodate travelers
整個早上，長龍依舊緩慢地迂迴前進至終點站，但是隊伍井然有序，工作人員也在一直盡各種努力調和旅行者們。 -
The simulation shows that the non - motorized vehicle moves in snake track and stop in insert style. it corresponds with the characteristic of non - motorized vehicle. the highest density of traffic flow from line regression of its statistic data is in the area of factual data
模擬表明非機動車在運動時橫向移動靈活，停止時呈穿插排列，符合非機動車行駛特點；對統計數據進行線性回歸后得到的最高密度處在實測范圍內。 -
Following are detailed steps of this system : in the segmentation section, we use three successive frames to detect the motion infomation of the pictures, by using blockmatching algorithm in two successive frames twice, we can get two pictures composed of motion blocks of the moving object, then we find out the common motion blocks of the two pictures, experiments prove these blocks approximately compose the moving object. after getting the motion blocks, we calculate the center of these blocks as the center of the moving object, thus we can use the center point as the origin, construct n straight linesjoining the boundry of the image and the center. on each line, we can find out a proper point near the object contour according to some criteria, then we use these n points as the initial points of the snake and let the snake converge on the object contour, thus finish the segmentation of the moving object
本方案的實現過程為：分割部分：對運動目標的前後三幀進行兩次塊匹配運動檢測，通過找出兩個匹配結果中運動圖像塊的公共部分，獲得組成運動目標的圖像塊；求出運動目標圖像塊的形心作為運動目標的中心，以此中心為端點，向四周發散出角度間隔為的n條射線，射線的另一端終止於圖像的邊緣；在每條射線上按照一定的準則（點的梯度和與目標中心的距離在一定閾值范圍內）找出n個初始輪廓點；以這些初始輪廓點作為主動輪廓模型（ snake ）的初始點，用改進的貪婪演算法使snake收斂到待分割的運動目標輪廓上。
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