查询词典 projective coordinates

Based on the cross-ratio of five coplanar points, a group of projective invariants is derived for recognition planar polygons.

论文利用具有射影不变性的共面五点交比，导出一组用于识别平面多边形的射影不变量，并给出了相应的识别算法。

The quantum quadratic residue codes are also extended in a nice way, most of which allow, the projective unimodular group, to act.

构造出量子二次剩余码的扩展码，与经典情形类似，对几乎所有的，量子二次剩余码的扩展码都以射影幺模群为自同构子群。

From the principle of projective geometry, a group of corresponding image points between original and rectified stereo pairs are determined, These correspondent points then used as samples to train a BP network.

该方法巧妙地运用投影成像原理，构造出一组立体图对在校正前后的对应点，将其作为样本来训练BP神经网络，从而将整个校正关系存储到网络中。

The"not escaped"pulsars of each group whose simulated projective places on to the Galactic plane lie in the range 0＜r＜25 kpc and 5＜r＜11 kpc from the Galactic center respectively are selected to make statistics on absolute height |z| distribution to derive the segmental scale height and the cumulative scale height.

对每组中"未逃逸"脉冲星，分别在0＜r＜25kpc和5＜r＜11 kpc两个区域中对|z|分布做了统计，研究了"未逃逸"脉冲星在这两个区域中的分段标高和累积标高的演化特征。

Vs. (24.73±8.6);P=0.003, 0.012; Emotional projective sub-score in group with behavior problems was significantly lower than that in group without behavior problems(2.90±0.80) vs.

8.31±3.73 、(19.13±9.93)vs。(24.73±8.6 )，P= 0.003、0.012；无行为问题组情绪投射测验成绩低于有行为问题组(2.90±0.80)vs。

The computational methods of line element conic curve s tangent point decided by any line on projective plane is presented on the basis of this study.

从实际计算的角度出发，使用N矢量表示视平面上的点和直线，并由线素二次曲线的射影定义推导出线素二次曲线的N矢量方程；在此基础上，给出了射影平面上任意一条直线所确定的线素二次曲线切点的N矢量的计算方法。

On this projective line is the good position for cuting the sternoeleidomastoid muscle and accesory nerve.

二腹肌后腹深面为高位结扎切断副神经点，若再向上易伤颈内静脉。

Result :We found that the line from the apes of the mastoid process making for the front margin 4cm(superior 1/4 joint with inferior 3/4)of the sternocleidomastoid muscle to the posterior margin 5cm(superior 1/3 joint with inferior 2/3)is the projective line of the accessory nerve(80%±5%).

结果：见乳突尖向胸锁乳突肌前缘4cm（上1/4下3/4交点）和向下至后缘5cm（上中1/3交点）处连线深面有副神经（80%±5%），该处是切断胸锁乳突肌及其副神经肌支的最佳部位之一。

General projective texture mapping allows such a "slide projector" to be positioned virtually anywhere in the scene.

通常的投影纹理映射技术允许这样的幻灯片投影机定位在场景中的任意位置。

This paper presents the two conditions:Sufficient condition and necessary condition for the links of perspective mapping and projective mapping.

本文给出了射影映射为透视映射的两个充要条件，这两个充要条件与射影变换为对合的充要条件是一致的。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切