Meaning Of Cross Correlation

Calculate windowed cross correlation between two signals A and B up to a pre-defined lag. Usage is similar to the Matlab function SPECGRAM.

The program takes the columns of an input matrix and calculates the auto and cross correlation of these columns using an fft method. The result is very similar to the xcorr function. This method could be used to evaluate the cross correlation of repeating code sequences, and other similar...

Uses fft to calculate the circular cross correlation of two periodic signal vectors.This is equivalent to xc(k)=sum(u1.*circshift(u2,k)), but much faster (on the order of 500 times faster for a 1024 point signal).The package also includes two examples. One checks the calculation against the...


Platforms: Matlab

This code calculates the cross-correlation for specified time windows over the duration of two input signals. The time windows can be shifted by increments smaller than the time window length. The code is based upon the 'xcorr' function.


Platforms: Matlab

normxcorr2_general computes the normalized cross-correlation of matrices TEMPLATE and A. The resulting matrix C contains correlation coefficients and its values may range from -1.0 to 1.0.Limitations of normxcorr2:The documentation of normxcorr2 states that, "The matrix A must be larger than the...


Platforms: Matlab

Find Displacement between images by using cross-correlation.Easy:[dr,dc]=findoff(unreg,ref)


Platforms: Matlab

This program detects a target image in a given image according to maximization of Cross Correlation.Sample Run:>> target This program detects a target in an image Entering the image for MATLAB... Save the image or its copy in MATLAB working Directory Enter the name of the image file...


Platforms: Matlab

Finding corresponding features in a pair of images is the basis of many optic flow, stereo vision and image registration algorithms. One straightforward approach to finding a match is to take a small patch of one image, compute its sliding cross-correlation with the other image, and find a peak....


Platforms: Matlab

Circularly shifts input data in matrix by columns, according to cross correlation maximum index.


Platforms: Matlab

http://simulations.narod.ru/segment_rectange.m is the function that difine length of cross.cross_perimeter.m auxillary function for segment_rectange.m, it define points of cross of segment and perimeter of rectanglezz_segment_rectange_test.m is script-test, it tests segment_rectange.m by use...


Platforms: Matlab

[FDOUT, FREQ_AXIS] = FDCORR(A,B,FRANGE)FDCORR Joint frequency and delay correlation Performs an efficient circular cross correlation between two vectors over all possible frequency offsets (Dopplers) between -pi and pi where 2pi is the sampling rate.A: vector representing received signal sampled...


Platforms: Matlab

AMI computes and plots average mutual information (ami) and correlation of univariate or bivariate time series for different values of time lag.USAGE: [amis corrs] = ami(xy,nBins,nLags)INPUT: xy: either univariate (x) or bivariate ([x y]) time series data. If bivariate time series are given then...


Platforms: Matlab

CH_XCORR Calculate cross-correlograms with a wide range of options.SYNTAX CCG = CH_XCORR(HC_L,HC_R,FRAME_LENGTH,NOVERLAP,MAXLAG,TAU) CCG = CH_XCORR(...,INHIB) CCG = CH_XCORR(...,IC_T,NORM_FLAG) CCG = CH_XCORR(...,INHIB_MODE) [CCG,IC] = CH_XCORR(...)DESCRIPTIONCCG =...


Platforms: Matlab

KXStitchs aim is to create software to allow the creation and editing of cross stitch patterns. Although software for this type of application has existed on the Windows platform for many years, there has never been an application written specifically for the Linux platform. KXStitch will be...


Platforms: *nix

A fast vectorized implementation of the ncc that handles color (3 channel) images as well as gray level.The algorithm for colored images is based on the ncc formulation for vector valued functions.Note: A bug that I found in the normxcorr2 was also fixed here.


Platforms: Matlab

Features:1. the program calculates the matter power spectrum, temperature spectrum, polarisation- and cross-correlation spectrum of a curved or flat Friedman-Robertson-Walker universe.2. it calculates the age of the universe, sigma8 and the age of the first start formation.3. massless neutrino's,...


Platforms: Matlab

In signal processing, cross-correlation is a measure of similarity of two waveforms as a function of a time-lag applied to one of them. This is also known as a sliding dot product or inner-product. It is commonly used to search a long duration signal for a shorter, known feature. It also has...


Platforms: Matlab

CORRPERC performs a bootstrap (of size equal to n_iters) on correlation matrices of input variable Y and computes the percentiles corrsperc (according to input perc) of each correlation. The function also provides the standard deviation corrstd for each correlation.[corrsperc, corrstd] =...


Platforms: Matlab

Correspondence Analysis (CA) is a special case of Canonical Correlation Analysis (CCA), where one set of entries (categories rather than variables) is related to another set. Also, it can be seen as a special case of Principal Component Analysis (PCA), where it is used for tables consisting of...


Platforms: Matlab

httpcode is a little utility that explains the meaning of an HTTP status code on the command line.


Platforms: *nix