The diffusion function is used for controling the smoothing degree.
P-M模型中的扩散函数,其作用是控制平滑力度。
By improving the method for two-dimensional information diffusion that is governed by a single parameter,a new type of diffusion function is obtained.
对原有的受单个参数控制的二维信息扩散方式作了改进,通过构造一个概率扩散模型导出了一个由3个参数控制的扩散函数,在此基础上根据实际情况建立一个准则,最终得到一个信息扩散的参数优化数学模型。
Authors use the complex wavelet which has stronger directional ability and locally 6 directional Wiener filter to get a "clearer image" ,then use "clearer image" guidance the diffusion function of partial differential equation to reduce noise in the image.
针对小波域维纳滤波的方向性差,去噪后图像容易产生哑铃效应,该方法首先进行双树复数小波变换,集中6个方向上的图像信号能量,之后,再在该6个方向上进行方向维纳滤波,对图像进行初步去噪,再以此引导偏微分方程中的扩散函数,实现各项异性进行扩散,最大限度地在保持图像细节的同时,去除噪声。
Based on the theory of single optic-fiber confocal microscopy,the effective point spread function of optic-fiber bundle confocal microscopy is studied with the general parallel confocal theory and the sampling theorem.
在光纤共焦显微系统理论的基础上,结合普通并行共焦理论和抽样定理,研究光纤束共焦系统的有效点扩散函数,得出光纤束共焦系统的光场分布情况。
Performance analysis and evaluation of point spread function for full digital autofocus;
用于全数字对焦的点扩散函数性能分析与评价
Investigation of characteristics of point spread functions in myopic patients
近视患者的点扩散函数特征研究
Methods:Wavelet transform was applied to estimate the point spread function of the imaging system,and then expectation-maximization algorithm was used to restore temporal CT images.
方法对40幅内耳CT图像,用小波变换的方法来估计CT成像系统的点扩散函数的参数,再用期望最大化迭代图像复原方法对CT图像进行复原。
The second, we construct the line spread function of ultrasound system using horizontal plane target and vertical plane target of phantom, then transform it by Fourier transform method, then we obtain the MTF of system.
首先 ,根据超声成像及体模内部结构的特点 ,将体模内的分辨目标群视作条形输入 ,提出对比度法求得系统的MTF ;其次 ,利用体模内相同深度处的目标群构造系统的线扩散函数 ,经过傅里叶变换得到系统的MTF ,并对两种方法取得的结果进行了分
The line spread function(LSF) of the imaging system was given by analyzing the edge image.
通过对刀口图像分析得到了系统的线扩散函数,再对其进行傅里叶变换得到调制传递函数,最后通过维纳滤波和约束最小二乘方滤波两种方法对图像进行了重建,得到比较清晰的边界情况和图像轮廓。
To improve the performance of image restoration algorithms,a modified Singular Value Decomposition(SVD) method was proposed to estimate the Point Spread Function(PSF) of an imaging system.
为了提高图像复原算法的性能,提出了一种改进的奇异值分解法估计图像的点扩散函数。
When the Point Spread Function(PSF) associated with motion blur is unknown,estimating parameters of the PSF is necessary for image restoration.
在运动模糊的点扩散函数未知的情况下,估计运动模糊的点扩散函数是运动模糊恢复的前提和关键。
Investigation about 3D microscopical image restoration and PSF;
三维显微图像复原及点扩散函数的研究
With analyzing the point spread function(PSF) and the depth of the field of the designed imaging system,it follows that the depth of field of imaging systems is relied on the refractive angle of the axicon.
通过对该系统点扩散函数和景深的分析,发现可以通过改变轴锥镜的角度来实现不同景深的成像系统。
The Measurement of the Point Spread Function in Optical System with CCD;
用CCD测定光学系统的点扩散函数
A Upscaling Method of Digital Elevation Model with Point Spread Function
利用点扩散函数进行DEM尺度转换
The Optical Transfer Function( OTF) of a linear optical systemcan be derived from the Fourier Transfer of the Line Spread Function( LSF).
线性光学系统的传递函数(TF)由线扩散函数的傅立叶变换求出。
Point-spread Function of CCD s Optical Systems and the Application in Sub-pixel Edge Localization;
CCD光学成像系统的点扩散函数及其在亚像素边缘定位中的应用
Numerical Simulation of Diffusion Processes Based on Radial Basis Function Method
扩散过程数值仿真的径向基函数方法
Effect of carrier diffusion on modulation transfer function of CCD
载流子扩散对CCD调制传递函数的影响
Nonparametric Estimation of Drift and Volatility Functions in Stochastic Diffusion Models
随机扩散模型中的漂移函数与波动率函数的非参数估计
Hyperbolio Function Series Method for Solving a Kind of Nonlinear Reation Diffusion Equtions;
一类非线性反应扩散方程的双曲函数级数解法
A Residual-free Bubble Method for Parabolic Convection-dominated Diffusion Problems
抛物型强对流-扩散方程的泡函数有限元法
A cross-layer multi-optimized function based directed diffusion protocol
一种基于多优化函数的跨层定向扩散路由协议
Analysis on Spectrum Characteristic of Boolean Functions Satisfying k-strengthened Propagation Criterion
满足k次强扩散准则的布尔函数谱特征分析
Diffusion probability density function in fractals is described by stable distribution.
物质在分形结构中的扩散密度分布函数属于稳定分布.
The form solution to the Mixed Problem of one dimension inhomogeneous diffusion equation was given through the method of undetermined function.
利用待定函数法给出了一维非齐次扩散方程混合问题的形式解。
Technology Innovation Diffusion Analysis Based on Bertrand Game Theory with Simplified Profit Function
基于简化利润函数的伯川德博弈模型的技术创新扩散讨论
First,an abstract function about acceptance of products is introduced into innovation modelwith the three competing products.
首先,我们在三竞争产品扩散模型中引进抽象的接受度函数。
DIFFUSIVE APPLICATIONS OF A CLASS OF PREDATOR PREY MODEL WITH BEDDING FUNCTIONAL RESPONSE OVER TWO PATCHES
一类带Bedding反应函数的捕食模型在不同斑块环境中的扩散作用
The Existence of Traveling Wave Solutions of a Diffusive Predator-Prey Model with DeAngelis Functional Response
带B-D功能反应函数的捕食者-食饵扩散模型行波解的存在性
THE METHOD OF SOLVING (2+1)-DIMENSIONAL DISPERSIVE LONG WAVE EQUATION WITH EXTENDED ELLIPTIC FUNCTION RATIONAL EXPANSION
(2+1)维色散长波方程的扩展椭圆函数有理展开解法