空间 space; enclosure; room; blank; interspace 活动空间 breathing spaces; 生存空间 living space; 时间和空间 time and space; 外层空间 outer space; 空间编码 space encoding; 空间布局 spatial distribution; 空间采暖 space heating; 空间导航 space navigation; 空间点阵 space lattice; 空间电场 space electric field; 空间定位 spatialization; 空间定向装置 tistat; 空间发射 spatial emission; 空间防御 [军事] space defense; 空间飞船 space vehicle; 空间飞行 space flight; 空间飞行器 spacecraft; 空间分布 space distribution; 空间构架 truss; 空间环境 [天文学] space environment; 空间环境监测仪 space environmental monitor; 空间基地 space base; 空间技术 [航] space technology; 空间科学 [航] space science; 空间实验室 spacelab; skylab;空间探测 [航] space exploration; 空间探测器 space probe; space exploration instrument; 空间探索 space exploration; 空间天文台 space observatory; 空间通信 space communication; 空间通信技术 space communications technique; 空间武器 [军事] space weapon; 空间物理实验卫星 spacephysics experiment satellite; 空间行走 [航空] space walk; 空间研究 space research; 空间遥测 space telemetry; 空间医学 aeromedicine; aerospace medicine; aviation medicine; space medicine; 空间站 space station
Especially , the image processing functions are weak in the medical image processing systems that applying in hospitals , and only traditional image processing methods of space field and frequency field are adopted 现有的实用医学影像处理系统中,图像处理功能较弱,且都采用传统的空间域或频率域图像处理方法。
( 3 ) after comparing many traditional fusion methods in spatial or frequency domain , in the paper a self - adaptive image fusion method based on dynamic weighting of regional features is proposed 3 、在对传统的空间域和变换域多源影像融合方法进行比较的基础上,提出了一种基于区域特征动态加权的自适应遥感图像融合方法。
Firstly , the relative basic knowledges of information hiding are presented , and then the techniques of digital images based information hiding in the domain of spatial and dct ( discrete cosine transform ) respectively 首先,介绍了信息隐藏的相关基本知识。然后,分别在空间域和dct域对于以静止图像为载体的信息隐藏技术进行了探讨。
The main content of this dissertation are as follow : 1 , the author analyses and derives the statistics characteristic of speckle , including the statistics characteristics for speckle of the intensity and amplitude images in the spatial domain 本文的主要内容为: 1 、分析了相干斑的统计特性、包括空间域的强度和幅度图像的相干斑统计。
Like other transforms such as dct and wt , zh - transform can transform the image data from spatial domain to another frequency - like domain , and zh - transformed data can describe the shape from coarser to finer 类似于dct和wt等变换, zh变换可以把图像数据从空间域变换到另一个类似于频率域的域,使变换后的数据从粗到精地描述了视频对象地形状。
In 3 - d ocdma system , the code sequence for each user is spreaded in time chip , wavelength and space . compared with 2 - d ocdma system , 3 - d system can accommodate more total users and simultaneous users 三维ocdma系统中,每个用户码字序列的光脉冲同时在时间域、频率域和空间域扩展,三维系统较之二维系统拥有更大的总用户和同时激活用户的容纳能力,系统性能更好。
In spatial domain , according to the characteristics of hvs ( human visual system ) , we introduce several approachs based on images " deviation , images " flatness measurement , fuzzy classification , and an approach based on difference matrix as well 在空间域内,利用人的视觉特性,我们提出了基于图象方差、图象平坦测度、模糊分类的隐藏算法,同时提出了基于差值矩阵的信息隐藏。
First of all , with thrice hermite interpolation to element displacement , the control equation of dynamics is derived in space - time domain . two groups of space - time finite element formulae solving displacement and velocity are obtained 作者首先对单元位移采用时域上三次hermite插值多项式,在空间域和时间域中联合离散控制方程,分别推导出了动力学问题的两组递推公式,以求解位移和速度。
In the algorithm of this paper , the watermark is 256 gray - scale fingerprint of people . therefore , embedding fingerprint information into digital products can effectively track illegal distributors and protect the copyright of the owner 本文提出了一种将256级灰度指纹图像作为水印信息,嵌入到多媒体数据中的时间/空间域水印算法,可以有效的跟踪非法分发者,从而更好的保护产品拥有者的产权。
Compared with field - based image morphing , we can specify the feature more exactly and the numbers of feature primitive are reduced . from experimental results , the algorithm ' s speed is treble improved generating a smooth morphing image , comparing with field - based image morphing 仿真结果表明,本算法与传统的直接空间域变形算法相比,小波变换只分解一层,变形算法的运算速度可提高三倍。