This lab consists of some tutorial files that will show you how to use matlab ? to view brain images and convolve with a hemodynamic response function ( hrf ) 这个实验中包含一些使用指引,告诉你如何用matlab来观看脑影像,并跟血液动态反应函数做叠积运算。
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It has important value in military and civil . conventional algorithms for synthetic aperture radar uses the matched filter and convolves the data with a reference phase signal which changes with range 合成孔径雷达( sar )是二战后发展起来的一种新的雷达技术,在军事和民用方面都有重要的应用价值。
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That is , vibration caused by the first part of the command signal is canceled by vibration caused by the second part of the command . input shaping is implemented by convolving a sequence of impulses , an input shaper , with any desired command 输入成型通过把参考输入信号和一系列脉冲进行卷积,得到成型输入信号,而成型输入信号作用于控制对象,其中这脉冲序列就是输入成型器。
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For the first time , on the view of algorithm and experimental system , the author analyze all the factors influcing the diagnose accuracy . on the basis of these analyses , " window " and convolving function with the best accuracy are selected , at the same time , the formulas of errors are deduced 在理论分析基础上,选择了具有最佳测量精度的窗函数和卷积函数,并对算法进行了改进,提高了计算精度;对实验系统各部分对测量精度的影响也进行了定量分析。
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On the basis of investigation and research about the technology of reconstruction for ict image up - to - date , this paper is devoted to develop an algorithm for image reconstruction based on wavelet theory . in this paper , time - frequency distribution for spatially varying filter was used to construct convolve - kernel by dwt , to modify convolve - back - projection algorithm 本文在国内外有关ct图像重建的研究状况基础上,根据小波分析理论,利用小波变换在时频空间的可变性,用dwt变换构造卷积核,对卷积反投影算法做了改进。
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On the basis of remote sensing technique ' s good characteristic with large - area , multi - time , multi - photograph variety , manifold abundant spectral information and high ground resolution , the fault tectonics frame , river geomorphy ( such as terrace , floodplain , shoal , etc ) and suspended load , etc . were explained after analyzed the fault tectonics , river geomorphy , characteristic in the tm image by gray bar statistics , primary component analyses , tm741 image integration , line convolve enhancement and model recognition etc . especially 9 piece of fault tectonics were explained in this thesis , in succession , the impacts of the factors severally were analyzed 遥感技术具有大范围、多时相、多片种、多层次、含有丰富的光谱信息及具有较高的地面分辨率的特点。本文利用该技术,运用灰阶统计特征分析和主成分分析、 tm741多波段融合、线性卷积增强、模型提取等一系列遥感解译分析方法,分析了断裂构造、河流地貌(阶地、漫滩、沙洲)及悬浮物等在tm遥感图象上的影像特征,解译出了安徽南部断裂构造格架、河流地貌和悬浮物的分布,并新解译出了9条近东西向的断裂。
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Sequentially , the author discussed the technologies of medical image 3d visualization according to the clinical applications . with the development of computer , 3d visualization and computer graphics , the 3d visualization of medical images has progressed from fourier transform and convolve inverse projection to mpr ( multi - planar reformation , mpr ) and mtp ( maximum intensity projection , mtp ) , nowadays , the real 3d reconstruction method , surface and volume rendering has risen . the image registering , image segmentation , pixel data set construction and 3d special interpolation are the key technologies in medical images 3d reconstruction 随着计算机技术、三维可视化理论和计算机图形学的发展,医学图像的三维可视化技术也从傅立叶变换、卷积反投影等基本图像处理算法,发展到真正的三维重建算法:面绘制和体绘制;医学图像的三维可视化技术的应用也从三维医学成像发展到虚拟内窥镜,以及今天的虚拟可视化人体研究;而图像的配准、图像分割、体数据集的构建、三维空间插值则是医学图像三维可视化实现过程中的关键技术环节。