为什么他们没有像文艺复兴时期的欧洲艺术家那样发现几何透视法呢？
Why did they not discover the geometric perspective as European artists did in the Renaissance?
探讨了一种利用平面迹线和几何作图法，作无灭光线下透视阴影的新方法。
This paper presents a new method of drawing perspective shade and shadow in parallel rays, which makes use of plane trace and geometrical drawing method.
然后运用相关的几何与透视理论，对基于计算机视觉的车轮定位参数的测量原理进行分析探讨。
Then it USES relevant geometric theories and perspective theories to analyze the measuring principles of wheel positioning parameters which are based on computer vision.
文中采用了三次多项式校正技术，该技术不仅可校正光学镜头的几何畸变，对透视和倾斜所产生的畸变都有较好的校正效果。
The paper adopted cubic multinomial rectification technology which not only can correct optical lens's distortion but also has good rectification results for perspective and incline distortion.
文艺复兴时期的大师们将几何从一门手艺变成了透视画法的一门艺术。
The Renaissance masters turned geometry from a craft into the liberal art of perspective.
又是为什么，在那些艺术作品里，完全没有体现过文艺复兴时期欧洲艺术里普遍采用的几何透视？
And why did they not discover the geometric perspective as European artists did in the Renaissance?
气象万千的中国书法，岂是他们贯常使用的几何构图、平衡透视等审美标准所能界定得了的。
Chinese calligraphy is various, and also cannot be defined by the aesthetic standards like geometric composition and balanced perspective.
文中利用射影几何中射线比的特殊性质，解决了透视灭点在图板外的透视图画法。
According to the nature of projective scale, it has solved the problem of drawing a cars perspective when perspective vanishing point is out of the drafting board.
本文介绍一种不受灭点远近限制的成角透视图法，并对其进行几何论证。
This paper introduces a method that we can apply it to draw angular perspective without view points, and it demonstrates this method according to the geometric principles.
然后根据冠脉造影系统的透视投影模型得到两幅不同角度的造影图像之间的几何变换关系，以及空间点三维坐标的计算方法。
Then geometrical transformation matrix between views is obtained based on perspective projection model for X-ray angiography system, and 3D coordinate of spatial points are calculated.
然后根据冠脉造影系统的透视投影模型得到两幅不同角度的造影图像之间的几何变换关系，以及空间点三维坐标的计算方法。
Then geometrical transformation matrix between views is obtained based on perspective projection model for X-ray angiography system, and 3D coordinate of spatial points are calculated.
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