cartesian geometry 中文意思是什麼
cartesian geometry
解釋
解析幾何。-
Construction of cartesian authentication codes from unitary geometry
認證碼的構造 -
Because geometry of formation of two satellites is very weak, the solution covariance is very big and unstable in order to resolve this problem, the measurement model was transformed from cartesian coordinate system to sphere coordinate system
由於雙星編隊星座觀測的幾何結構弱，所以解算參數的協方差不穩定。為了解決這一問題，對測量方程進行球坐標變換。 -
Based on tree data structure, the cartesian grids about 2 - d and 3 - d configurations are generated using the surface - cutting procedure. in the course of grid generation, a two - step ray - casting algorithm to excluded cells inside the body and a cell - merging technique to avoid numerical instability are fully developed. after creating these surrounding grids, the cell - cutting algorithm is designed to perform geometry - based refinement of grids, and greatly improve the applicability and quality of grid generation
採用物面切割，基於叉樹數據結構，發展了一種普遍適用於二維和三維外形的直角切割網格生成方法；構造兩步射線求交演算法，刪除外形內的固體網格，以及小網格合併演算法，確保網格質量和流場計算的穩定性；運用對任意網格的切割細分演算法，實現了針對幾何外形的自適應網格加密，使得網格生成更具普適性和靈活性。 -
To create geometry images of point cloud surfaces, we first determine the center of the polar coordinates and convert the cartesian coordinates [ x, y, z ] to polar ones r, coordinate is encoded as the location and r is encoded as the gray value in the image. to represent point cloud surfaces with high complexity, we propose using multi - layered images
根據笛卡爾坐標和極坐標之間的轉換關系，三維坐標[ x ， y ， z ]首先被轉換成[ r ， ， ] ，其中[ ， ]被轉換成幾何圖象中的象素坐標， r轉換為該象素的灰度值，生成幾何圖象。
分享友人