Design of telecentric beam path for zoom projection optics;
变焦距投影光学系统中的远心光路设计
Emulate-holographic mathematic treatment of parallel projection applied in mining engineering visualization;
平行投影在矿业工程可视化中仿全息数学处理
New method for multi-attribute decision making based on vague set——projection method;
基于Vague集的多属性决策新方法——投影法
Surveying Projection of Over-head Point & Line Using Intersecting Line of Two Vertical Plane;
垂面交线法悬点与悬线投影测量研究
New 3D line-generating algorithm based on line property and projecting;
基于直线特性和投影原理的三维直线生成算法
The LS channel estimation of OFDM systems can be viewed as a noisy observation of the true channel frequency response,so the noise component can be compressed through subspace projecting.
OFDM系统的LS信道估计可看作真实信道频率响应的一个有噪观察值,因此可采用子空间投影方法对噪声进行压缩。
This paper discusses the method of fast drawing tool′s section projecting picture with the help of computer aided drawing through human computer interaction.
论述了在给出刀具的一个截面的情况下，通过编制人机交互式对话功能的程序文件，运用计算机辅助作图法快速绘出刀具该截面投影图的方法，以期提高图形生成效率和准确度。
Intersetions between different tunnels as well as between tunnels and shafts are often existed after they are projected on a plane.
用计算机绘制巷道平面和立体图时,巷道是用双线表示的,对各类巷道及斜井、竖井进行立体投影时,经常产生巷道与巷道,巷道与井筒之间的交叉。
First,a point on a real CCD is projected to the ground based on the pinhole model;second,in the same way,the point on ground i.
基本方法是利用小孔成像原理,先将CCD上的点投影到地面上,同时假设平行于地面一定高度有一虚拟CCD平面,再将地面上相应的点投影到虚拟CCD上,当所有点都遍历后,虚拟CCD平面上获得的图像就是梯形校正后的图像。
Especially, its reflect type, plastic substrates panel and the digital projectionused in the electronic cinema are unique and irreplaceable with others.
对比与其共存的自发光型平板显示方法 ,液晶占据压倒优势的市场 ,同时它的反射式、塑料屏、以及大型数字信号投影等技术为其它方法所不能替代。
By the data in the images from the two frequency grating projector, the absolute phase at each pixel is then unwrapped by comparing the two wrapped phases and it is suit for the great craggedness of the measurement object.
在光学投影栅线法测量物体三维轮廓理论的基础上,本文提出了双频投影栅线法物体轮廓测量技术,通过两种不同频率的光栅投影图,能够直接得到包含物体高度信息的绝对相位值,能够实现具有陡峭边沿物体的测量,实验结果表明,利用该方法能够显著提高物体轮廓测量精度。
The multimedia teaching means are widely applied such as computer,projector in our practice teaching.
学校的教学实践中,计算机、投影仪等多媒体教学手段的使用日益普及,它在提高学生的学习兴趣,培养学生的创造性的思维,启迪学生创造性的想象力等方面发挥了重要的作用。
Transparent film projector is used to demonstrate interference，polarization andother wave optical phenomena and laws on large screen in big lecture halls.
本文介绍利用投影仪和透明胶片在大教室前的屏幕上动态演示干涉、偏振等波动光学现象及其规律的一些方法。