Gradient

Permanent Magnet synchronous motor was modeled with the help of vector control technique and it was also made sensorless based on sliding model observer (SMO). controller parameters are given after tuning it with conventional gradient descent method. Platforms: Matlab

Group and Block Sparse Signal reconstruction viaMatching Pursuit - BMP, GMPGradient Pursuit - block_gp, group_gpNearly Orthogonal Matching Pursuit - block_nomp, group_nompPartial Conjugate Gradient Pursuit - block_pcgp, group_pcgpOrthogonal Least Squares - BOLS, GOLS Platforms: Matlab

This script may be easily converted to a function which could be an extremely useful subroutine in optimization problems to check whether the objective function is globally convex. It may also be used to derive the expressions for gradient and Hessian of the given multidimensional real valued... Platforms: Matlab

For more information refer to "Nonlinear Programming: Theory and Algorithms" by by Mokhtar S. Bazaraa , Hanif D. Sherali , C. M. ShettyHere is the sample outputSteepest Accent Method=============Function = (3*x1+x2+6*x1*x2-2*(x1^2)+2*(x2^2))Hessian...... [-4 6] [ ] [ 6 4]Gradient...... [3 + 6... Platforms: Matlab

Extracts the edges of a color image without converting it to grayscale.Changes in color are detected even when the grayscale color of two pixels are the same. The edge strength is typically greater or equal to the magnitude obtained by simply filtering a grayscale image.Optionally, the edge... Platforms: Matlab

The code is probably not very efficient, as it contains a for loop. Any improvement ideas are welcomed.example:ParameterMatrix=abs(meshgrid(0:199)-100) / 20;inputimg = double(checkerboard(10,10,10)>0.5);blurred=VariableBlur(inputimg, ParameterMatrix);imagesc(blurred);colormap(gray); Platforms: Matlab

Implements various optimization methods which do not use the gradient of the problem being optimized, including Particle Swarm Optimization, Differential Evolution, and others. The implementation is simple and easy to understand.Also included are parallel versions of PSO and DE, as well as... Platforms: Matlab

IMSHADE will plot a matrix representing topography as a 3-component color image, with intensity proportional to the magnitude of the topographic slope of each pixel. Optionally, it can take an argument for lighting angle to use the directional slope.The current colormap will be used, but future... Platforms: Matlab

This function amplifies areas of high intensity and segments them using a front. The front is initialized on the convex hull (for speed) and erodes the map until it has converged on the edge of the areas to keep, maintaining edge geometry.The idea and title for this function come from Dr. Tong... Platforms: Matlab

Gradient along a specified dimensionY = DGradient(X, Dim, Spacing, Method)INPUT: X: Real DOUBLE array, any number of dimensions. Spacing: Scalar or vector of the length SIZE(X, Dim). Dim: Dimension to operate on. Optional, default: 1st non-singelton dimension. Method: String, order of the applied... Platforms: Matlab

This book provides a complete analysis of the conjugate gradient and generalized minimum residual iterations.For a full book description and ordering information, please refer to http://www.mathworks.com/support/books/book1344.jsp. Platforms: Matlab

This submission is a set of m-files to demonstrate how to take a simple numerical derivative and Hessian of an arbitrary function. Each step in the code is documented. There is a test script included which computes the numerical Hessian of a test function and compares it to a... Platforms: Matlab

Carries out Gaussian smoothing followed by differencing as a way of estimating the gradients of a grey-level image in the X and Y directions. This is the initial stage of the well-known Canny edge detector, but the gradients can be used for many other applications.The function offers independent... Platforms: Matlab

This script calculate the contrast between gray matter and whitematter of mouse spinal cord based on equations for signal intensity ofgray and white matter in a gradient echo imaging sequence. The T1, T2,and T2-star values for gray matter and white matter were taken fromMeyerand et al. Magnetic... Platforms: Matlab

Combination of gradient adaptive laguerre lattice filters and Kalman filter for the estimation of a missing signal in a multichannel record.Entry submitted for the PhysioNet 2010 which involved estimation of last 30 seconds of a physiological signals. For details see Platforms: Matlab

Implementation of Fast Fourier Transform based Homogenization for heterogeneous materials dealing with electric or heat conductiviy. It takes the values of conductivity at regular grid of periodic unit cell that represents the material and produces the distribution of local fields such as... Platforms: Matlab

Demonstration of finding the minimum of a noisy function using gradient-based optimization.This model was developed for use in teaching optimization in graduate engineering courses. It demonstrates one approach for attempting to find the minimum of noisy functions using gradient-based... Platforms: Matlab

usage :map = blue2red;colormap(blue2red);Returns a 256x3 array which can be used with colormap.map(1,:) corresponds to blue color,map(64,:) corresponds to cyan color,map(128,:) corresponds to green color,map(192,:) corresponds to yellow color,map(256,:) corresponds to red color,and all indices... Platforms: Matlab

The script uses distance transform instead of thinning base as the primary method for skeletonization.The method is sensitive to the value of the user defined Thinness Parameter (TP).An alternative approach to 3D skeletonization that use the gradient and divergence of the distance transform is... Platforms: Matlab

This plugin adds simple counters badge (FeedBurner and Twitter) to your blog. This badge shows for blog readers a counter of your FeedBurner readers and Twitter followers. It also provides "Subscribe to" and "Follow me" links for your users.This is full customisable plugin. You can customise font... Platforms: PHP