透视

The techniques of projection center finding and perspective plane determination in 3 D PIV have been investigated profoundly.

对三维PIV中透视投影的视点定位与透视平面的确定技术作了深入的研究，提出了一种确定视点坐标与透视平面的方法，给出了相应的数学关系式，最后通过实验的方法对视点坐标与透视平面的确定技术进行了检验。

In order to recognize the 2D shapes, we proposed a set of perspective invariants of a pair of coplanar conics in this paper, we suggest a perspective invariant representation of general planar curve based on ellipse, and give an algorithm using the invariants and the representation to recognize 2D shapes.

为了实现二维形状的透视投影不变性识别，本文推导出了一种共面二次曲线对的透视投影不变量，提出了一种基于椭圆的平面曲线的透视不变性表示方法，并且给出了用该不变量和不变性表示方法实现二维形状识别的算法。

As I mentioned last year, we hope to have look-through earnings grow about 15% annually.

就像我去年曾经提到的，我希望我们的透视盈余每年都能够成长 15%，在 1990 年我们确实大幅超越这个比率，但 1991 年结果却差很多，我们在吉列的可转换特别股投资已经被赎回，我们将在 4 月 1 日把它们转为普通股投资，虽然这将会使得我们每年的帐面盈余减少 3，500 万，透视盈余也会跟着减少，另外我们在媒体事业的直接与透视盈余也可能下滑，但不论如何，我们每年还是会向大家报告透视盈余的计算结果。

We also believe that investors can benefit by focusing on their own look-through earnings.

各位可以从下表看出我们是如何计算透视盈余的，不过我还是要提醒各位这些数字有点粗糙，(被投资公司所分配的股利收入已经包含在保险事业的净投资收益项下)我们也相信投资人可以透过研究自己的透视盈余而受益，在算这个东西时，他们就会了解到其个别投资组合所应分配到的真正盈余的合计数，所有投资人的目标，应该是要建立一项投资组合可以让其透视盈余在从现在开始的十年内极大化。

This paper studies the relations between plane projective correspondence and perspective correspondence and present a necessary and sufficient condition that plane projective correspondence become perspective correspondence.

研究二维射影对应与透视对应的关系，给出二维射影对应是透视对应的充要条件，得到二维射影对应可分解若干次透视对应，进而给出二维射影对应的几何意义。

art performance ; perspection ; line ; focus ; spread

人类在长期的艺术实践和探索中，创造和发明了许多表现空间远近的方法，从形体和空间关系来说，有平面透视、倾斜透视；从观察位置与观察对象之间的关系来说，则有散点透视和焦点

According to the structure of terrane and exploring water result of coal floor disclosed by hydrology drill hole,it is demonstrated that there exists strong relationship among abnormal apparent conductivity, crack in rock stratum and the extent of filled water in crack,an.

应用音频电透视技术，分析了杨村煤矿2702工作面底板30 m和50 m深度界面的探测成果，并与井下水文钻孔揭露的煤层底板岩层结构及探水结果对比研究，发现音频电透视探测的煤层底板综合视电导率高异常与岩层的裂隙性及其充水程度具有很强的关联性；岩层裂隙与含水层连通性良好部位明显显现视电导率高值异常，结果表明，音频电透视探测成果能够综合反映底板岩层的阻水条件。

In Single Point Perspective,the designer can also determinate Vanishing Point anywhere on the horizon with the need of design's expression effect.Determining Vanishing Points on the horizon in two-Point Perspective,designer draws one of Measurings with the need of design's expression effect.The another can be draw by two circular arcs in the vertical.It solute the problem easy and convenience without drawing by experience of Perspective and confirmed by memory of the Perspective Rule.

在一点透视中，确定直线长度距点也可以是设计者根据设计表达效果的需求任意确定；两点透视中确定直线长度的量点，其中一个是设计者根据表达效果的需求任意确定，另一个可以在立面图上用两段圆弧求出，方便、简单，解决了靠透视经验画图，靠记住透视规律验证的草图、效果图的问题。

This task is designed to instruct ss to review what they have learned about perspective and one-point perspective Thus , they will have a better understanding about the application of two-point perspective.

此项任务是帮助学生复习有关透视法和一点透视的基本术语及原理，以此帮助学生对两点透视画法的理解及应用

Using the perspective drawing formation principle,this paper makes comprehensive elaboration of one-point perspective,two-point perspectives and three-point perspectives formation principle with the matrix representation method,and infers one essential method to these three kinds of perspectives formation principle which the perspective reverses,uses this essential method to reverse the picture's some characteristic point coordinates,then completes the reconstruction object's three-dimensional model with these characteristic point coordinates and carries on the confirmation using the surface,the body,these two kinds of fundamental elements as examples.

利用透视图的形成原理，对一点透视、两点透视和三点透视的形成原理用矩阵表示的方法作了全面的阐述，并对这三种透视的形成原理进行反推，推导出透视反求的一种基本方法，利用这种基本方法反求出图片的一些特征点的坐标，然后用这些特征点的坐标来完成重建物体的三维模型，并以图像中面、体两种基本元素为例进行了验证。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。