查询词典 spheroidal coordinates

Use is made of the elliptic coordinates for the ease of treating ellipse shaped boundary, while the analytical results for the components in the Cartesian coordinates are provided for convenience of application.

分析引入椭圆坐标，以助于处理问题的边界条件，并最终给出直角坐标下各分量的对应结果，以便于实际应用。

Camera parameters according to the correspondence of feature points both in the image coordinates and the world coordinates with the camera calibration technology was firstly caculated. Then the main position of light source was gotten from the two erectness object and their shadows. Finally, the illumination effect of the virtual object in the light source with the position of virtual object and camera parameter was computed.

首先利用球场的特征点在图像坐标系与世界坐标系上的匹配关系计算出真实摄像机的参数；根据摄像机参数和场景中已有的物体及它们的阴影坐标来恢复主光源；并计算出虚拟物体在所求光源下光照效果的过程。

By the procedure, we first use the cosine values of the angle between view vector and normal vector on each vertex as the texture coordinates, through calculation of the dot product of the two vectors. The derivative of radial curvature on the model surface is used as the second pass texture mapping coordinates, by a calculation using Euler formula.

该方法首先通过模型顶点的视线向量和法线向量的点乘积计算其夹角的余弦值，作为第一步的纹理坐标进行映射；再通过欧拉公式计算径向曲率及其方向导数值，作为第二步映射的纹理坐标。

Gamma-corrected RGB coordinates are referred to as R'G'B' space, and the luma value Y' is derived from these coordinates.

经过 Gamma 校正后的 RGB 坐标被称为 R'G'B 空间，其中亮度值 Y 可以从这些座标中提取出来。

Taking generalized coordinates for variables, the differential equations of multiple elastic particles are decomposed into the differential equations in the independent form by introducing generalized coordinates .

通过广义坐标的引入，将多质点弹性体系的运动微分方程分解成以广义坐标为变量的独立微分方程形式。

It is important that the longitude and latitude that you supply are geographic coordinates, not geocentric coordinates.

你需要提供的是地理坐标而不是地心坐标，这个很重要。

This paper gives the method of homogeneous projection coordinates system that is established by original element turning to natural coordinates system under the projective change.

给出在射影变换下以原象元素所建立的齐次射影坐标系化为自然坐标系的方法，不妨称作基元变换法。同时给出射影变换的几何意

The computation by using image coordinates will cause computational breakdown or deterioration of accuracy when they become too large,and the computation by using homogeneous coordinates will increase computation work.

现在，越来越多的人们逐渐把注意力放在关于射影几何的计算以及利用不变量进行物体识别[3][4]。

Automatically according to input data to choose the minimum value of the largest longitudinal coordinates, according to the time the largest choice of horizontal coordinates of the minimum value.

详细说明：自动根据输入数据的最大最小值选择纵向坐标，根据时间最大最小值选择横向坐标。

Evaluation of three-dimensional surface roughness need to measure the three-dimensional coordinates of the points in the surface assessment region, the horizontal coordinates (x-coordinate), vertical coordinate (y-coordinate) and elevation data (z-coordinate).

三维表面粗糙度的评定需要测量出表面评定区域内各点的三维坐标，即横向坐标、纵向坐标和高度数据。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？