查询词典 projective pencil of lines

We next establish certain conditions which arc necessary and sufficient for a projective module over a cellular algebra to be injective.

给出了胞腔代数是标准分层代数的一个充分条件，利用这个条件我们介绍了一种归纳构造标准分层的胞腔代数的方法； 5。

ABSTRACT The dissertation focus on the following aspects of Target Detection and Recognition study:(1) Target detection based on movement information;(2) 3D projective invariants and 3D object recognition;(3) Target recognition based on artificial intelligence .

本学位论文主要围绕目标检测与识别的以下几个方面进行了深入的研究：(1)基于运动信息的目标检测方法；(2)基于射影不变量的3D目标识别方法；(3)基。。。

Because projective invariance between 3D object and its 2D image could overcome the problem caused by viewpoint, calibration and feature correspondence effectively, it has been attracting more and more attention and research efforts over the last 20 years. For more comprehension to this field, firstly, the main research contents of the invariance-based 3D object recognition is discussed, including geometry frames and their invariance, as well as the way to apply the geometric invariance.

为使人们了解该领域的研究现状，以对该领域的研究有所启发，首先讨论了基于几何不变性的3D物体识别方法的研究内容，包括研究的几何框架和其不变性以及几何不变性在3D物体识别中的主要应用；其次，总结性地评述了该领域的研究现状；最后，提出了研究的发展方向。

According to a theory of computer vision, the most general transformation that can occur between a scene plane and an image plane under perspective imaging is a plane projective transformation.

根据计算机视觉的理论，在透视变换的情况下，一个景物平面与一个图像平面之间的变换是平面投影变换。

Based on the deep analysis of existing methods, plane projective transform based method is concluded, formalized, and proved by relative affine structure.

在此基础上，提出了基于视觉的SLOM感知框架，重点解决运动平台上的运动目标检测问题。

This process is as follows: applying projective transformation on the plane, using interpolation method to acquired texture, and then mapping it on the model.

讨论了如何纠正平面纹理的透视变形，及其相应的纹理映射，其过程是在两视图重建的基础上，对原平面进行投影变换，并用插值方法获得纹理，从而映射到模型上。

Non-paralleling any principle projective plane can show the real inner structure of the inclined part.

为了表达机件上倾斜部分的内部结构，用不平行于任何基本投影面的剖切面剖开机件。

Together with some basic knowledge of Linear Algebra, we prove that there exists a polynomial time algorithm for finding the shortest contractible cycle in an locally LEW-embedded graph. 3. By some results of Minor Theorem, we prove the crossing numbers of some circular graphs C(10,4), C(9,3), C(8,3) on the projective plane.

利用C.Thomassen在大边宽嵌入方面的工作，得到了局部大边宽嵌入图的一些性质，再利用线性代数的知识，证明了在局部大边宽条件下存在多项式时间算法可以找到一个图的最短可收缩圈。

Furthermore, we determine the nonorientable crossing number sequences of those graphs by their crossing numbers on the projective plane and the embedding technique. Then we show that the nonorientable crossing number sequence of C(10,4) is non-convex.

利用子式理论的部分结果，证明了一些循环图C(10，4)，C(9，3)，C(8，3)在射影平面上的交叉数，再利用嵌入技巧，得到了它们的不可定向交叉数序列，并证明C(10，4)的不可定向交叉数序列不是凸的。

Paralleling to a principle projective plane Full sections, half-sections and partial sectional views all have a single cutting plane.?

用平行于某一基本投影面的平面剖切？前面介绍的全剖视图、半剖视图和局部剖视图都是单一剖切面剖切的图例。

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。