snake motion 中文意思是什麼
snake motion
解釋
車軸蛇行動-
Energy and consciousness - moves in spiraling motion - coils - loops - the snake
能量和意識-以螺旋運動感應-盤繞-環-蛇。 -
The direction guidance system plays an important part in the shield excavation, such as the prevention of snake motion, the reduction of ground settlement of tunnel construction and the insurance of tunnel quality etc. based on the principle of guidance system, a precise direction guidance system with high accuracy, high efficiency and more reliability is developed, it has the advantages of less times of surveying, real time positioning and shield behaviors monitoring
盾構導向系統是盾構掘進時的指揮系統，對指導盾構掘進、隧洞貫通、減少地表沉降以及保證隧洞的質量等具有重要的作用。本文在研究盾構導向工作原理的基礎上開發研製了一套盾構導向系統，精度高、工作可靠，可極大地縮短導向測量的時間和減輕勞動強度，實現了盾構掘進的實時定位和姿態監測。 -
In tracking section, we still adopt the snake to converge on the object contour by improving the energy functions, in the tracking frame, initial points are acquired by calculating the average inter - frame motion vector of the block, because all snaxels have approximately the same motion vector as the moving object is proposed to be rigid and have no salient deformation
跟蹤部分：根據剛體運動的特點（運動區域具有一致性和不發生較大的形變）求出運動目標的平均位移矢量，與在分割部分求出的目標的輪廓點的位置相加，作為下一幀跟蹤的初始輪廓點，結合改進的snake能量函數使其更精確地收斂到運動目標輪廓上，達到準確跟蹤的效果。 -
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。 -
Detection of motion - target based on improved gradient vector flow snake model
基於改進梯度向量流形變模型的動目標檢測方法 -
In this paper, we propose a new simple and effective system of segmentation and tracking of moving object in a stationary complex background. in this system, we combine the merits of motion detection based on blockmatching algorithm and the object segmentation based on active contour ( snake ), and get a satisfied result through the testing of a serious of different video pictures
在眾多的分割和跟蹤方法中，本文將研究對象定位在具有一定復雜背景下單個平移運動的剛體，結合基於塊的運動檢測和主動輪廓模型分割目標的優點，提出了一個簡單而有效的復雜背景下運動目標分割與跟蹤系統，並取得了良好的效果。
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