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利用压缩包内的5和函数产生PPM调制的UWB信号，信号波形为高斯二阶导函数。重复编码次数，TH码长度范围，波形形成参数alpha等参数均可以改变-use compressed within the five functions to generate PPM and the UWB signal modulation, Waveform second derivative of the Gaussian function. Repeat code number, TH code length,
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Models UWB TX and RX using BPSK fifth derivative.
MATLAB Release: R13
Descr iption: This m file models a UWB system using BPSK with the fifth order derivative of the gaussian pulse with correlation receiver and intgrator.
-Models UWB TX an
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图像边缘检测(Canny 算法)的Java实现
Canny边缘检测算法
step1:用高斯滤波器平滑图象；
step2:用一阶偏导的有限差分来计算梯度的幅值和方向；
step3:对梯度幅值进行非极大值抑制；
step4:用双阈值算法检测和连接边缘
-Edge Detection (Canny algorithm) to the Java Canny edge detection algorithm ste p1 : Gaussian smoothing filte
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包括图像分析的四部分代码：matlab扩散和高斯函数，线性扩散，线性复扩散，非线性扩散。,It contains four parts：
[1]MATLAB function:diffusion.m gauss.m
[2]Linear diffusion
Applying linear diffusion to images creating linear scale-space.
MATLAB code: demo_lin.m
Image: haifa1.bmp
[3]Li
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高斯脉冲的微分的MATLAB仿真程序，对超宽带脉冲宽度的改变和脉冲微分-Derivative of Gaussian pulse MATLAB simulation program, to change the UWB pulse width and pulse differential
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关于Steerable filtering decomposition 的matlab程序,- STEERGAUSS Implements a steerable Gaussian filter. This m-file can be used to evaluate the first directional derivative of an image, using the method outlined in:
W. T. Freeman and E. H. Adelson
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Gradient calculation using first order derivative of Gaussian. by using a 2-D Gaussian kernel, derivatives along x and y directions are calculated
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数字图像的边缘检测
本科毕业设计（边缘检测是数字图像处理中的重要内容。本文首先对图像的边缘检测的各种算法和算子做了总结和分析。Canny最早提出了边缘检测的三条连续准则:最优检测结果、最优定位和低重复响应,并在这些准则的基础上得到了“最优线性滤波器”―高斯函数的一阶导数。经过十几年的发展,目前已经有了对这个准则的很多改进,本文也对这个方面的工作做了小结。Demigny在理论分析和实践的基础上给出了边缘检测的离散准则,并且证明在离散准则中Canny提出的第三个准则可以被阀值操作所取代。本文利用
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This source code simulates UWB based wireless Communication system which transmits color image over wireless medium.
Modulation type: Pulse position modulation
Pulse: second derivative of a Gaussian pulse Channel: AWGN
Image: lib.jpg-This so
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Design and Use of Steerable Filters PAMI1991文章的代码，含有测试图像和demo，可运行-It implements a steerable Gaussian filter.
This m-file can be used to evaluate the first directional derivative of an image, using the method outlined in:
W. T. Freeman and E. H.
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边缘特征的提取就是求图像梯度的局部最大值和方向。实际计算中，以微分算子的形式表示，并采用快速卷积函数来实现。常用的算子有微分算子，拉普拉斯算子，Canny算子等。其中Canny边缘检测是一种较新的边缘检测算子，具有较好的边缘检测性能，得到越来越广泛的应用。Canny边缘检测法利用高斯函数的一阶微分，它能在噪声抑制和边缘检测之间取得较好的平衡-Edge feature extraction is to seek the local maximum of image gradient and ori
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This a matlab program that
computer the gradient image using 1st derivative of Gaussian-This is a matlab program that
computer the gradient image using 1st derivative of Gaussian
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用于Harris角点检测，可以修改滤波窗口，也可以选择改进的高斯函数一阶微分作为滤波窗口-Harris corner detection is used, you can modify the filter window, you can also choose the improved first-order derivative of Gaussian function as the filtering window
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对三维图像进行求导的一个程序，利用高斯卷积后对图像求导相当于对高斯函数求导的性质。是用itk库写的一个通用模板类，里面还有例子。-Computation of local image derivatives is an important operation in many image processing tasks that
involve feature detection and extraction, such as edges, corners or more complicat
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通过高斯函数导数检测图像边缘，实质是方向可调小波变换检测图像边缘。-Derivative of Gaussian function through the image edge detection, in essence, Steerable wavelet transform image edge detection.
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This m file plots the time and frequency waveforms for BPSK fifth derivative equation of gaussian pulse used in UWB system analysis.
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通过高斯函数导数检测图像边缘，实质是方向可调小波变换检测图像边缘。-Derivative of Gaussian function to detect image edges, essentially Steerable wavelet transform to detect the image edge.
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GAUSSGRADIENT Gradient using first order derivative of Gaussian.
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Retinal Vessel Extraction by Matched Filter with First-Order Derivative of Gaussian
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Segmentation of retinal blood vessels by using
a matched filter based on second derivative of
Gaussian
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