Histogram

It is very fast and simple file to display histogram of a 3D imageimhist3(I,n) n is the number of bins in the histogramimhist3(X,map) X isindexed 3D image and map is colormap map

in this test program, we calculate the cumulative histogram in a local window centered at each pixel,this local cumulative histogram can be used to drive the level set for image and texture segmentation.Ref. Tony Chan, Selim Esedoglu, and Kangyu Ni, Histogram Based Segmentation Using Wasserstein...

Following features are calculated:% Mean% Variance% Skewness% Kurtosis% Energy% EntropyAny Other histogram based features can be easily incorporated.Enjoy it


Platforms: Matlab

This script will create a column subset from a numeric spreadsheet, then take the row averages and create a histogram of those averages. You can specify the subset by column number or by marker (if the spreadsheet has a marker map). This is useful for LogR spreadsheets to investigate for possible...


Platforms: Mac

Histogram Viewer is a Firefox extension that generates the histogram of a selected image. When the user right clicks on an image, the option "Show Histogram of Image" is shown in the context menu. If the user selects this option a new window is opened which shows the histogram of the image. By...


Platforms: Mac

A histogram is a chart in which data values are counted and placed into buckets, each bucket counts the number of data items that fall into it's range, the buckets are then displayed in a bar chart. This program generates histograms from simple ASCII (txt) data files and creates both a text...


Platforms: Windows

Gives an enhanced histogram tool for 16-bit images. The plug-in provides a 512, 768, or 1024 pixel wide histogram, giving between 2 and 4 times the resolution of Photoshop s built-in histogram tool. This is a must if you are interested in the details of the histograms of your 16-bit images. We...


Platforms: Mac, 6, 7, CS

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...


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

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 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

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

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 histogram of the image gives the frequency of occurrence of the gray level. it gives the no. of times a particular gray level occurs in the image. In the case of a colour image,the histogram is expected to give the number of a particular colour has occurred in the image.


Platforms: Matlab

This programs creates a histogram with a "logicle" (aka biexponential) x-axis. This is generally used to display flow cytometry data. It will not create false artifacts for values near zero. For more information see "A new "Logicle" display method avoids deceptive effects of logarithmic scaling...


Platforms: Matlab

function histmat = hist2(x, y, xedges, yedges) Extract 2D histogram data containing the number of events of [x , y] pairs that fall in each bin of the grid defined by xedges and yedges. The edges are vectors with monotonically non-decreasing values.The code is optimized no loop inside, it can be...


Platforms: Matlab

function H = histo2D(D,[Xlo Xhi],Xn,[Ylo Yhi],Yn,Xlab,Ylab,Title) 2-Dimensional Histogram(size(H) == [Yn Xn])Counts number of points in the bins defined by -X = linspace(Xlo,Xhi,Xn) andY = linspace(Ylo,Yhi,Yn)Example:Dx = 5*rand(100,1) ;Dy = 10*rand(50,1) ;D = [Dx,Dy] ;H = histo2D(D,[0 5],10,[0...


Platforms: Matlab