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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
Ruihuajishu
- 本文介绍了图像处理中的锐化技术，介绍了多种方法，包括边缘检测、一阶微分、二阶微分等。 图像的锐化技术是图像处理中必不可少的部分，学会如何锐化图像将使我们的图像处理软件设计更加完美。-This article describes a sharpening of the image processing technology, introduced a variety of methods, including edge detection, first derivative, second d
LinearBPM
- 这是一个简单的FFT为无电位1 +1 +1 Ð 薛定谔方程的光束传播方法。如果该软件灵活，允许引入的术语（如果是极少数需要包括色散效应高阶导数）。例如，如果一个人渴望解决的一个方程的形式： （四/ dz的+ Ð ^ 2/dx ^ 2 - 0.25 * Ð ^ 3/dx ^ 3）== 0 Ÿ 它可以解决使用以下代码： Ž = linspace（0,1,512） x = linspace（-5,5,1024） psi0 =进出口
FoundationsofFuzzyControl
- The objective of this textbook is to explain the behaviour of fuzzy-logic controllers. Under certain conditions, a fuzzy controller is equivalent to a proportional-integral-derivative (PID) controller.
OOK_Psd
- 周期高斯一介导、高斯二介导即高斯脉冲（即UWB信号）的功率谱图像，对应不同的占空比和不同的脉冲形式，随着阶数的增加中心频率右移，频谱也为高斯形式，且随着周期数增多，呈现线谱形式-Cycle Gaussian ordinary derivative, ie the Gaussian two-mediated Gaussian pulse (the UWB signal) of the power spectrum image, corresponding to different pulse du
canny
- 最优的阶梯型边缘检测算法(canny边缘检测) 1.Canny边缘检测基本原理 (1)图象边缘检测必须满足两个条件：一能有效地抑制噪声；二必须尽量精确确定边缘的位置。 (2)根据对信噪比与定位乘积进行测度，得到最优化逼近算子。这就是Canny边缘检测算子。 (3)类似与Marr（LoG）边缘检测方法，也属于先平滑后求导数的方法。 2.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；
sphnima
- The mesh free collocation method has a long history of development and is simple to implement and computationally efficient. However, it is often found unstable and less accurate, especially for problems governed by partial differential equations wit
lq
- 所编子程序为标准四阶龙格库塔解常微分方程的程序，可以不作修改直接使用。再则，主程序当中用一个方程验证其正确性，并可以输出函数的一阶导。-Subroutine, compiled by a standard fourth order Runge-Kutta ordinary differential equation solution procedure can be used directly without modification. Furthermore, the main program
Ultrawideband
- 超宽带（UWB）的多频带OFDM与定点transmitterreceiver物理层建模 UWB的分析 超宽带的BPSK分析 第五阶导数的BPSK超宽带 超宽带信道模型 超宽带链接分析 超宽带单环 超宽带单脉冲 超宽带多旋回-Ultra-wideband (UWB) multiband OFDM physical layer with fixed-point transmitterreceiver modeling analysis of UWB UWB BPSK
marr_laplacian
- 基于二阶导数的图像边缘检测方法，包括marr算法和laplacian算法-Second derivative-based edge detection methods, including marr algorithms and laplacian algorithm
WeiFenFangChen
- 各种微分方程使用MATLAB求解程序，详细完整-various derivative equation by matlab
gauss_wavelet
- ，分析探讨了有关高斯函数的小波特性。根据多尺度微分算予理论和多分辨分析思 想，证明了高斯函数构造了一个多分辨分析(MRA)，高斯函数的各阶导数均构成小波基函数-Analysis of the characteristics of the Gaussian wavelet function. According to the theory of multi-scale differential operator and multi-resolution analysis thinking th
cedif
- 改进后的非线性各向异性扩散用于图像中的保边去噪，增加了二阶导数，是滤波效果更好-Improved nonlinear anisotropic diffusion for edge preserving image denoising, an increase of second derivative, is a better filtering effect
EX_1920
- This program interfaces a Dallas DS1920 touch memory device.It will display the temperature reading of the device it "touches" with pin B0.-This source code may only be used by licensed users of the CCS C compiler. This source code may only be distr
shuzhijisuan2
- matlab中关于矩阵的分解，行列式，逆。矩阵的特征值，矩阵函数，奇异值分解，最小二乘法，函数的导数以及偏倒数，梯度，切平面以及积分与卷积等的原理，以及具体程序编写的例子-matlab on Matrices, determinant, inverse. Eigenvalues, matrix functions, singular value decomposition, least squares, and the partial derivative of the function inv
peakfinder
- This function quickly finds local peaks or valleys (local extrema) in a noisy vector using a user defined magnitude threshold to determine if each peak is significantly larger (or smaller) than the data around it. The problem with the strictly deriva
homework2
- 实现一个函数编写的程序，通过符号计算求出f函数的导数 -Written procedures to implement a function, obtained by symbolic computation function, the derivative of f
2-DifferentialImageEnhance
- 打开一幅BMP图像，对该图像进行二阶微分，再用该图加上原图像实现图像加强。-Open a BMP image, the image second derivative, and then implement the plan with the image enhance the original image.
CDraw Application
- 自定义一元n次函数，根据定义的函数及其值域绘制曲线，并且对已知曲线进行多种运算，例如：求导，微分，曲率，去杂点，平滑等等。-N times one dollar custom function, by definition, the function and range of drawing curves, and a variety of computing known curve, for example: derivation, derivative, curvature, to the
Hw1
- 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