centroid position 中文意思是什麼
centroid position
解釋
重心位置-
Centroid position of focal spot of laser beam with aberration
畸變光束的焦斑質心位置 -
The excursion of centroid position of focal spot may be easily acquired with the centroid position expression of focal spot
利用焦斑質心位置表達式，可分析和確定由於振幅調制和相位畸變導致的質心位置偏移。 -
The centroid position of the focal spot directly depending on intensity distribution and phase slope distribution of near field is derived, and its physical meaning is described
進一步推導了焦斑質心位置對光束近場強度分佈和相位斜率分佈的依賴關系式，並對該式清晰的物理意義進行了闡述。 -
In order to analyze the effect of aberration of amplitude and phase of laser beam on centroid position of focal spot, based on the fraunhofer formula for light wave scaler diffraction theory, according to the definition of first order moment centroid position, the general expression of focal spot centroid position directly depending on the complex amplitude of near field is derived
摘要為分析振幅和相位發生畸變情況下光束焦斑質心位置所受的影響，以光波標量衍射理論中的夫瑯和費衍射公式為基礎，根據光斑強度分佈一階矩質心位置的定義，推導了直接依賴于光束近場復振幅分佈的焦斑質心位置的一般表達式。 -
Based on the method, a tracking window method is adopted to track the target, and locate the position of target centroid by adjusting the window self - adaption
本演算法採用動態窗口法，利用目標顏色的概率分佈特徵，鎖定目標的顏色分佈區域的質心，達到快速準確的跟蹤效果。 -
First, we can use a camera to take over the laser beam at one end, record the position of the light - spot, and calculate the centroid of the light - spot, then, move the laser on the guide rail. we should rectify the screw until the position of light - spot is unchangeable. then, the camera should be moved to the other end of the guide rail
先用攝像機在一端接收激光器發出的光斑，並記錄光斑的位置，求出其質心，然後在導軌上移動激光器，調節頂絲，直到攝像機上的光斑位置不動為止，然後將激光器移到導軌另一端，讓激光器在導軌上滑動，調節頂絲，直到攝像機上光斑位置不變，而且與前一次測試時的位置在誤差允許的范圍內，則認為激光器直線性校準完畢。 -
Centroid : the " center of gravity " of the image of an object, defining the position of the object with subpixel precision
質心：圖片中一個目標的「質心」 ，精確到比像素更高一級。 -
In order to acquire 3d spatial position and motion parameters of moving target, the limitation of second focus method to get the depth of target is analyzed according to perspective projection model of target centroid. then, the constraint for obtaining 3d position and motion parameters of moving target centroid from monocular image sequence is presented and proved in this paper. with this constraint, a nonlinear extended kalman filter algorithm for estimating 3d spatial position and motion parameters of moving target centroid from monocular image sequence is proposed
進一步，為獲取目標的空間位置和運動參數等三維信息，在目標和成像系統都運動的情況下，根據目標質心的透視投影成像模型，首先分析了二次成像法獲取目標深度信息的缺陷；然後給出了由單目序列圖像獲取目標質心的空間位置和運動參數的條件，並提出利用多幀單目序列圖像和應用非線性擴展卡爾曼濾波演算法來估計目標質心的空間位置和運動參數；最後對提出的估計方法進行了多組模擬驗證，證明該方法可行有效。 -
Then 2d characteristics in image space are acquired, such as position of target centroid
至此得到了目標質心在圖像空間的位置等二維特徵信息。
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