数码影像常见词汇

3-D digitizer三维数字转换器一种能将真实物体转换到3-D计算机模式的元件或软件,可采用光学立体扫描和使用数字笔的方式来实现。3-D effects三维效果一种能创造三维视觉图像效果的程序。Aacceleratorboard加速卡安装在计算机内的一个电路板,用以帮助提高计算机的运行速度。access tim e存取时间计算机与硬盘的数据交换速度,通常以台式计算机为标准,以毫秒为计算单位。active m atrix display动态矩阵显示一种使用微晶体管进行图像显示的液晶显示器。additive prim ary colors加法三原色红、绿、蓝三种基本色以不同的比例混合可形成不同的…     

三维（3—D）封装技术

3-D多芯片组件（MCM）是未来微电子封装的发展趋势。本文介绍了超大规模集成（VLSI）用的3-D封装技术的最新进展,详细报导了垂直互连技术,概括讨论了选择3-D叠层技术的一些关键问题,并对3-D封装和2-D封装及分立器件进行了对比。     

厚积而薄发的3-D立体影视

3-D立体影视已有70多年的历史,近年数字技术推动3-D立体影视技术突飞猛进,3-D立体影视开始大行其道.本文在系统阐述国内外3-D立体影视现状的基础上,对3-D立体影视的发展态势进行了深入的分析.     

不断推进的圆片级三维封装

当减小芯片面积时,3-D封装能减轻互相连接所带来的延迟问题,根据集成电路是否已经进行了3-D互相的设计,描述了3种选择方法。     

Reconstruction of three-dimensional coronary arterial dynamics from multi-view angiogram sequences

Since actual cardiac and arterial motion is non-rigidand non-uniformbothin space andinti me[1],the quan-tification of dynamic 3-Dcurves with 2-D projections isinaccurate and sensitive to view angles . Ruan[2]andPuentes[3]reconstructed 3-D arterial centerl…     

Double Beams to Measure Three-dimensional Rigid Body Displacements^①

A new method for measuring 3-D rigid body displacements is proposed,in which two perpendicular beams are emitted onto two sensitive planes of PSDs leing perpendicular to each other.The method can be used to measure 1-D or 2-D displacements when required.Moreover,the experimental results are presented,which demonstrate that the new method has high accuracy,fast processing speed,high reliability,and easily being realized.     

Multi-spectral and hyperspectral image fusion using 3-D wavelet transform

Image fusion is performed between one band of multi-spectral image and two bands of hyperspectral image to produce fused image with the same spatial resolution as source multi-spectral image and the same spectral resolution as source hyperspeetral image. According to the characteristics and 3-Dimensional （3-D） feature analysis of multi-spectral and hyperspectral image data volume, the new fusion approach using 3-D wavelet based method is proposed. This approach is composed of four major procedures： Spatial and spectral resampling, 3-D wavelet transform, wavelet coefficient integration and 3-D inverse wavelet transform. Especially, a novel method, Ratio Image Based Spectral Resampling （RIBSR）method, is proposed to accomplish data resampling in spectral domain by utilizing the property of ratio image. And a new fusion rule, Average and Substitution （A＆S） rule, is employed as the fusion rule to accomplish wavelet coefficient integration. Experimental results illustrate that the fusion approach using 3-D wavelet transform can utilize both spatial and spectral characteristics of source images more adequately and produce fused image with higher quality and fewer artifacts than fusion approach using 2-D wavelet transform. It is also revealed that RIBSR method is capable of interpolating the missing data more effectively and correctly, and A＆S rule can integrate coefficients of source images in 3-D wavelet domain to preserve both spatial and spectral features of source images more properly.     

Lnear Phase FIR Filter on Measuring 3—D Surface

An optical technology for 3-D surface measurement is se up.The technology,based on a deformed projected grating pattern which carries the 3-D information of the measured object,can automatically and accurately obtain the phase map of a measured object by using a linear-phase FIR filter.In contrast to the 2-D fast Fourier transform technique,it‘s more than fast.Only one image pattern is sufficient for measuring .The phase map can be processed without assigning fringe orders and making distinction between a depression and an elevation.Theoretical analysis and experimental result are presented.     

Spectrum Illumination for 3— Surface Imaging System

A method using spectrum illumination to reconstruct 3-D bject image is a new concept in the field of computer vision.The design of optical illumination system is crucial this method.Several ways to achieve multicolor spectrum illumination are discussed.A prism illumination system is designed by means of aligning symmetrically the prism at the mid-wavelength(nd=1.806 274)of light path and using reflection collimating lens,cylindrical expending lens and two optical shutters.The relations between deviation angles and light wavelengths are given,and some 3-D reconstruction results are presented.     

基于InSAR的三维地形匹配导航技术的研究与实现

研究了一种以干涉合成孔径雷达(InSAR)信息为基础的三维地形匹配导航系统,该系统采用基于3-D Zernike矩的三维地形匹配算法,同时针对3-D Zernike矩在地形匹配中计算实时性差的问题进行了改进。为验证系统的有效性和算法性能,搭建了基于VC++和OpenSceneGraph的三维可视化软件仿真平台。仿真结果表明,基于3-D Zernike矩的三维地形匹配算法定位精确度高,对地形的适应能力强,算法的实时性问题得到了良好解决,系统具有较高的工程实用价值。     

Diamond Edge 3D——欢迎进入第三维

有些逼真的3-D图形的真实感是如此之强,以至于会使你不自觉地想去触摸监视器,而且几乎能感觉到屏幕上图形的纹理。Diamond的Edge3D图形板就能为你提供这种几乎可乱真的3-D图形显示效果。Edge 3D是第一种集成有波表音频、全动态视频加速功能和数字游戏端口的图形加速卡。     

3-D profile measurement for complex micro-structures

Micro-structures 3-D profile measurement is an important measurement content for research on micromachining and characterization of micro-dimension. In this paper, a new method involved 2-D structure template, which guides phase unwrapping, is proposed based on phase-shifting microscopic interferometry. It is fit not only for static measurement, but also for dynamic measurement, especially for motion of MEMS devices. 3-D profile of active comb of micro-resonator is obtained by using the method. The theoretic precision in out-of-plane direction is better than 0.5 nm. The in-plane theoretic precision in micro-structures is better than 0.5 μm. But at the edge of micro-structures, it is on the level of micrometer mainly caused by imprecise edge analysis. Finally, its disadvantages and the following development are discussed.     

基于PC机的断层图象序列3-D表面重建

由断层图象序列重建三维物体模型及其可见表面显示是目前国际上十分活跃的研究课题。本文对X射线CT图象序列重建三维对象模型,以及可见表面3-D显示进行了研究。提出一种给定分段点数的轮廓多边形近似方法,继而提出一种快速断面图象间轮廊插值方法。对重建出的人体肝脏体元阵列,用深度和梯度明暗显示方法进行显示,肝脏可见表面的3-D显示结果令人满意。全部软件都是在以PC/AT为主机,配以PC-VISION图象处理板的微机图象处理系统上,用C语言编程实现的。     

三维小基站蜂窝网络上行覆盖概率与容量分析

本文针对小基站网络立体分布特性,采用全新的三维视角分析小基站网络架构,提出了一种基于三维泊松点过程（3-D Poison Point Process,3-D PPP）的上行小基站网络模型。其核心思想是将移动台和小基站分别描述成两个独立的3-D PPP模型。首先,本文推导了小基站网络上行覆盖概率的数学表达式。接下来,基于覆盖概率的表达式,推导了上行平均信道容量的闭合表达式。通过一系列合理的假设,上行覆盖概率以及信道容量可以通过快速积分直接计算。与传统的二维模型以及用户/小基站的实际布局相比较,本文提出的模型更接近实际,能够为覆盖概率和系统容量提供更贴近的边界值。      

一种高选择性三阶带通三维频率选择表面

提出了一种具有高选择性和三阶带通响应的三维(3-D)频率选择表面(Frequency Selective Surface,FSS).该3-D FSS的单元结构由3个贴片金属方筒和3个介质方筒嵌套而成,产生3个传播路径.2个方形同轴路径提供方形槽谐振,产生2个传输极点,平行板路径提供半波长谐振,产生另一个传输极点,由此形...     

基于三维递归搜索的多级运动估计视频帧率上转换算法

运动补偿插帧是目前主要的帧率上转换方法。为减小内插帧中的块效应,并降低运算量以满足实时高清视频应用,该文提出了一种基于3维递归搜索(3-D Recursive Search, 3-D RS)的多级块匹配运动估计视频帧率上转换算法。该算法将3-D RS与双向运动估计相结合,首先对序列中相邻帧进行由粗到精的三级运动估计,再利用简化的中值滤波器平滑运动矢量场,最后通过线性插值补偿得到内插帧。实验结果表明,与现有的运动补偿插帧算法相比,该算法内插帧的主、客观质量都有所提高,且算法复杂度低,有很强的实用性。     

漏光环形透镜的光学传递函数

推导了漏光环形透镜的三维(3-D)、2-D和1-D光学传递函数(OTF)公式，给出漏光系数对OTF的影响。模拟计算和分析表明：漏光不改变系统的横向截尾频率，但轴向截尾频率大大增加，由(1-ε^2)／2变为1／2；高ε(遮挡率)系统具有较高的横向成像质量，但轴向信息几乎不能成像；对于高ε系统，中心遮挡区的稍稍漏光对横向成像质量几乎没有影响，但轴向成像质量可显著提高；简单的改变漏光系数，可以获得任意调节的轴向分辨率。     

MONO－PULSE RADAR 3－D IMAGING TECHNIQUES FOR TARGET IN STEPPED TRACKING MODE

A method for mono-pulse radar 3-D imaging in stepped tracking mode is presented and the amplitude linear modulation of error signals in stepped tracking mode is analyzed with its compensation method followes,so the problem of precisely tracking of target is solved.Finally the validity of these methods is proven by the simulation results.     

基于三维测量模型的立体视觉传感器的现场标定技术

提出了基于双目立体视觉传感器三维(3-D)测量模型的传感器现场标定技术，并建立了标定数学模型。相关实验表明，这种标定方法简单，具有较高的标定精度，最大尺寸测量误差小于0．05mm，对标定环境及靶标的摆放姿态无严格要求。     

家用3-D电视端到端标准开发的综述

消费者对于近期的3-D放映活动反应非常热烈,这证明了使用者对3-D内容的渴望,3-D似乎注定要成为家庭娱乐产业的下一代杀手级应用。到那时,3-D格式的母版后期处理及发行标准对于其在消费市场的成功推广是极其重要的。