Relative Frequency Histogram

RF Blockset converts frequency domain RF information to a baseband-complex time-domain model, for fast execution and compatibility with Simulink signal processing and communications blocks.This simple model illustrates some relationships inherent in the conversion...* Length of impulse response =...

While working with a histogram we may need to detect a peak or crest of the histogram.But the histogram contains a number of local minima & maxima which makes the histogram extremely uneven.While detecting a peak or crest we are intended to detect the global peak or crest.This code replaces every...

Compute the discrete Fourier transform at specified frequencies, not using fft.Why one may need this?(1) MATLAB fft function computes the amplitude of signals only (no phase).(2) Once having the recorded time-series data, one often uses fft to do the spectral analysis. However, the frequency set...


Platforms: Matlab

function [f,a] = iqtofreqplot(x,freq)Finds the angle and frequency of IQs it then plots the angle and frequency as a function of time IQTOFREQPLOT('complex data', 'rate at which received I and Q per second')if you choose not to put in a frequency rate use IQTOFREQPLOT('IQ')please note that the...


Platforms: Matlab

function [optN, C, N] = sshist(x,N) [optN, C, N] = sshist(x,N) Function `sshist' returns the optimal number of bins in a histogram used for density estimation. Optimization principle is to minimize expected L2 loss function between the histogram and an unknown underlying density function. An...


Platforms: Matlab

Base paper detail : "Improved Particle Swarm Optimization Based Load Frequency Control In A Single Area Power System"Saumya Kr. Gautam, Nakul Goyal Department of Electrical Engineering, IT-BHUVaranasi,India."This my first model, implementing IPSO/ Other Algorithm i will publish soon"


Platforms: Matlab

This is an image contrast enhancement algorithm that overcomes limitations in standard histogram equalization (HE). The two primary features is adaptive HE (AHE), which divides the images into regions and performs local HE, and the contrast limited AHE (CLAHE), which reduces noise by partially...


Platforms: Matlab

This code implements automatic gain control for audio signals, which attempts to apply a smoothly-varying gain to an audio waveform in order to keep its energy close to some target level. This version also tries to balance the energy in individual frequency bands. It works by taking the...


Platforms: Matlab

In wireless topology we using filters as main part of system, we proposed a flexible filter for multi-purposes working at ISM band frequency. Obviously the filter idea works by splitting the Band Pass Filter into two types H.P.F & L.P.F controlled by logic circuit to select the desired filter....


Platforms: Matlab

This function finds dominant peaks and valleys of an image histogram. Minimum peak distance and averaging filter size can be changed to suit your need.Although, the function is originally written for mages, there is no reason why this can't be used on one dimensional data.USAGE:[peaks minima_low...


Platforms: Matlab

a program calculates Relative wavelet energy with brief tutorial Reference: O.A. Rosso, M.T. Martin b, A. FigliolaEEG d-deDUanalysis using wavelet-based informationd-deDt Journal of Neuroscience Methods 153 (2006) 163d-deOCt182


Platforms: Matlab

HISTCND Histogram count for n dimensional data. N = HISTCND(X,EDGES), for row vectors X, counts the number of values in X that fall between the grid defined by the cell array of EDGES, each of whose element is a vector that contain monotonically non-decreasing values. N is an N-D array each of...


Platforms: Matlab

Brightness Preserving Dynamic Fuzzy Histogram Equalization(BPDFHE) proposes a novel modification of the brightness preserving dynamic histogram equalization technique to improve its brightness preserving and contrast enhancement abilities while reducing its computational complexity. This...


Platforms: Matlab

This script transforms an image such that the object in the "foreground" of the image now becomes the histogram of the transformed image.I provide three examples with 3 demo images: I change the image of a city skyline so that the histogram of the new image looks like the skyline. I change the...


Platforms: Matlab

Here we find out the histogram of any gray level image by not using the command imhist(), which is an inbuilt one rather by without using the inbuilt command. Reader may verify the plot by comparing with that generated from using the inbuilt command.


Platforms: Matlab

This is a MATLAB implementation of the Color Frequency concept introduced by T. Kashiwagi & S. Oe.With this script, you pick a color image and then it computes the color frequency image. The color frequency image is an image where the pixel intensity represents the frequency of pixels in the...


Platforms: Matlab

Reference - This code is based on the technique described in: D.G. Bailey - Detecting regular patterns using frequency domain self-filtering, 1997 Intl. Conf. on Image Processing, 1:440-3.


Platforms: Matlab

For the description, I took the abstract of the original publication:"A special set of computer-generated complex tones is shown to lead to a complete breakdown of transitivity in judgments of relative pitch. Indeed, the tones can be represented as equally spaced points around a circle in such a...


Platforms: Matlab

The provided functions demonstrate a histogram-based measure for class separability, given the samples from two classes (binary classification problem). The proposed error classification estimation method is described in (B) and it is based on estimating the pdf of each class using histograms....


Platforms: Matlab

The objective is to demonstrate character/ symbol frequency distribution analysis (reference to the English language) on 2 vintage ciphers, namely Caesar cipher (a mono-alphabetic substitution cipher) and the Vigenere cipher (a poly-alphabetic substitution cipher).Under the symbol frequency...


Platforms: Matlab