查询词典 invariance

All the local 3D world coordinates of the control points falling on two light stripe planes can be readily obtained by the invariance of the cross ratio.

利用构建的分别位于两个光平面上标定特征点，可以实现工作状态的十字结构光传感器参数的优化估计。

A new measurement system based on linear structured light is presented for measuring grinding wheel morphology. Based on the principle of invariance of cross ratio, the method of calibration is modified, so that the process is simplified, and the result of measurement is easier to analyze.

提出了一种新的基于线激光的视频测量系统来对砂轮地貌进行测量，以交比不变法则为基础，改进了线结构光测量中的定标方法，使得定标过程简化，且结果更易分析处理。

The results of examples show that this algorithm is more practical and reliable than traditional algorithms. Vector ; Cross ratio ; Invariance ; Computational methods

也有使用齐次坐标来计算交比[5]，但由于齐次坐标与任意一个非零常数相乘所表示的点和直线不变，这就会出现同一个

Cross ratio is an essential invariant related to projective transformations,and discovering intrinsic properties of scene by using invariance of cross ratio computation is one of the hotspots in computer vision fields.

1引言交比是一个和射影变换有关的一个基本不变量，它的透视不变性已经引起了计算机视觉研究人员的重视，人们利用它从透视图像中进行物体识别[1][2]。

The calibration method can generate the sufficient calibration points with high accuracy for structured light system,which decrease error from image processing and cumulative computing according to invariance cross ratio.

该方法可以降低图像处理过程所引入的误差，减少多次交比不变计算标定点所带来的累积误差，得到多组高精度的标定点，从而提高结构光系统的标定精度。

Firstly, a DAE version of extended LaSalle invariance principle is discussed.

为此论文研究了该方法在DAE形式下的推广。

Inspired by this section, in section 5.2,we explore some basic topological degree properties of A-proper mapping in Menger pn-space. By its homotopy invariance, we prove the existence of solution for some equations.

受这节内容的启发，在第5.2节，我们首次在Menger pn-空间中研究了A-proper映射的拓扑度理论，并利用其同伦不变性获得了几类方程解的存在性。

G. , operator description, L〓 stability and asymptotic stability, and periodic invariance of system, is described, asynchronous learning control is also divided into time-domain methods and frequency-domain ones, and corresponding formulations are strictly derived.

本文其次研究了主要由日本学者提出与发展的迭代与重复自学习控制，并在此基础上，提出了统一的异步自学习控制理论。

Experimental results show that the invariants not only have projective invariance but also have high stability and discriminability.

这组不变量不仅具有射影不变性，而且具有较好的稳定性和可分辨性，可以有效地识别平面多边形。

Experiments show that the improve coarseness has higher texture discriminability and better rotation invariance, and that the image retrieval result based on the improved coarseness is superior to that based on the previous coarseness.

实验表明，改进纹理粗糙度具有更强的纹理分辨能力和更好的旋转不变性，基于改进纹理粗糙度的图像检索结果优于基于原有纹理粗糙度的图像检索结果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐