查询词典 projective pencil of lines

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。

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。

The method that I used in the project is proposed in 1997, Mann gave techniques for automatically finding the eight-parameter projective coordinate transformation that relates two frames taken of the same static scene.

在项目中我用到的方法是 1997年提出的，曼恩给出了一项自动寻找到八个参数的坐标变换，将采用同一场景的两幅拼接起来。

Second, more feature points are extracted for advanced registration based on projective transformation.

实验表明：该方法具有精度高、速度快、鲁棒性强等特点，是一种高西安理工大学硕士学位论文效的全自动配准方法。

When rotational axis are unknown, the general solution of camera intrinsic parameters is obtained by the eigenvectors of 2D projective transformation.

在摄像机绕未知轴旋转时，根据相应的2D投影变换，运用矩阵特征向量理论给出了内参数的通解公式。

Projective transformation between two rational quadratic Bzier curves is determined by pairs of corresponding control vertices and weights.

对于有理二次Bzier 曲线，两条有理二次Bzier 曲线间的射影变换由它们对应的控制顶点和权因子所确定。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。