查询词典 projective

According to the theory of beam phase space, the projective density distributions in four dimensional and two dimensional trace space are derived for some space charge distributions often used in accelerator physics.

理论和实验研究都已发现，它们与束流空间电荷的非均匀分布有密切关系。

In accordance with this characteristics, moving objects can be effectively extracted with local auto-adaptive threshold, and the trajectory of moving object can be gotten by applying projective transformation from spatiotemporal space to geography space.

针对该特点，运用逐点灰度均值将背景与运动点目标分离，并根据投影关系将目标投影到二维空间，获得直观的目标运动轨迹。

According to the theory of beam phase space , the projective density distributions in four dimensional and two dimensional trace space are derived for some space charge distributions often used in accelerator physics. And, the relation between beam emittance and brightness with density distributions is developed too.

针对加速器中几种常用的束流密度相空间分布形式，根据束流相空间理论，推得了它们在四维和二维径迹空间中的投影密度，并给出了束流发射度和亮度与束流密度分布的关系式，为加速器束流测量和束流诊断提供理论依据。

Briefly speaking, a space curve is called affinely infinite if it is intersected by every plane in the 3D real projective space; otherwise, it is called affinely finite.

简单地说，在三维实射影空间，如果一条空间曲线与射影空间中任意一个平面都相交，那么称这条曲线是仿射无限的；反之是仿射有限的。

The computational formula of the gradient matrix in subspace is obtained by applying Taylor series expansions, decomposition theorem of space and projective theorem (The gradient matrixs in different subspace are different).

利用子空间上的泰勒展式、空间分解定理以及投影定理得到了子空间上梯度矩阵的计算公式(不同的子空间，梯度矩阵是不相同的)。

Some existing algorithms are used and some changes are made to achieve a good result during projective transformation.

该方法适用于构建虚拟的3维场景及去除由于透视变形而产生的图像模糊。

These formulas are very useful when 2D projective transformation is very close to the theoretic P.

该公式在2D投影变换接近理论值P时是非常实用的。

The area-partitioned matching approach based on projective transformation is presented.

在采用投射大小光斑的方法中，提出了基于射影变换原理的分块匹配算法。

This paper extends the solution methods for 2-D projective transformation matrix from 4 points corresponding to variety combinations of points and lines corresponding, such as 4 points, 4 lines, 1 point and 3 lines, 3 lines and 1 point, and 2 points and 2 lines, etc.

该文把求解2-D射影变换矩阵的方法从单纯的四点对应扩展到多种组合形式的四元素对应当中，如：4点、4线、3点1线、3线1点和2点2线等。

To begin with, through taking merely feature points on image pair obtain the initial projective transformation matrices.

对利用手持普通数码相机原地旋转拍摄的序列场景图像，本文研究以图像特征匹配和目标函数优化完成了平面全景图像拼接，改进了Szeliski算法。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。