marching problem 中文意思是什麼
marching problem
解釋
步進式問題-
Because of the large advantage in the analysis of electromagnetic scattering and radiation problem, using the time domain integral equation ( tdie ) solving every structure of objects ’ scattering become to an important direction in computation electromagnetics, but the classical mot ( marching - on - in - time ) - based tdie solvers have a drawback : the late time stability problems
由於時域積分方程對于分析電磁散射、輻射問題有著無可比擬的優勢，利用時域積分方程求解各種結構體目標散射成為計算電磁學領域中一個非常重要的方向。但是傳統的時間步進法求解時域積分方程存在致命缺點:后時穩定性不好。 -
This dissertation proposes an algorithm to solve the problem by constructing transition contours using active contour model. the algorithm considers the transition contours construction as a growing process, so it is based on higher layer knowlege and can ensure that transition contours are similar to trunk contours and branch contours, and also reconstructed transition surfaces at branch points are smooth. the contours are connected using adjacent contours synchronous marching algorithm
採用基於全局的柱體生長法來判斷斷層間輪廓的相互對應關系；針對輪廓線表面重建中的難點問題?分叉問題，提出了一種基於主動輪廓模型的過渡輪廓構造方法，這種方法從物體主動生長這一角度出發考慮過渡輪廓的構造，能夠產生綜合兩斷層上輪廓特徵的過渡輪廓，是一種基於全局性高層信息的有效輪廓構造演算法；利用相鄰輪廓線同步前進法進行輪廓拼接。 -
Since the pse is parabolized, the problem can be solved by the marching procedure which uses different method in the streamwise direction and spectral collocation method in the normalwise direction. with the predictor - corrector approach in the marching procedure, the normalization is satisfied and the stability of numerical calculation can be assured
由於pse的拋物化特性，在流向上採用差分推進計算方法進行求解，並與法向上的高精度的譜方法結合，通過預估-迭代，使拋物化穩定性方程中的正規化條件得到滿足后推進到下一步。 -
First, we will generate a virtual model by marching _ cube surface rendering algorithm, after we segment ct images. a simplified method is used to eliminate the ambiguity problem
本文首先由marchingcube面繪制的方法對實驗的ct數據三維可視化，並提出了解決二義性問題的方法，得到虛擬模型。
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