a projective transformation的意思|示意

This paper presents a method of arc projective transformation of the fundamental geometric elements on a sphere, and sets up an are projective system for three axial and two axial correspondently.

本文提出了一种球面上基本几何元素的园弧投影变换方法，并建立了三轴及对应的二轴园弧投影体系。

Based on invariance of the cross-ratio in projective transformation, this paper designed a gray artificial landmark for vision-based recognition by shape information.

本文以射影变换下的复比不变性为理论基础，设计了一种可基于形状信息进行视觉识别的灰度人工路标。

In this paper we propose a method of projective transformation from pitch surface to cutter surface for studying face mill cutters.

文中借助于形象思维把齿轮的啮合几何化，提出了一种研究按滚切法工作的切齿刀具的方法，从节曲面到齿曲面的射影变换。

In general cases, the former can be approximated well to the latter, and it leads a new way in pattern recognition under the projective transformation.

在多数情况下，透射变换可以用仿射变换很好地近似，这为透射变换的目标识别指出了一条新的途径。

Some existing algorithms are used and some changes are made to achieve a good result during projective transformation. Then the result of test is analyzed and discussed.

在投影变换的过程中对已有算法进行了改进以达到较好的效果，并对实验结果进行了分析和讨论。

By using a certain projective transformation, a smooth planar parametric curve with any function may be changed into a new planar parametric curve of order 3 in a rational form.

本文讨论了任意函数类的一条光滑平面参数曲线段，在适当的射影变换下，可以变为相应的有理形式的平面三阶参数曲线。