It is very fast and simple file to display histogram of a 3D image
imhist3(I,n) n is the number of bins in the histogram
imhist3(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,...
Following features are calculated:
Any Other histogram based features can be easily incorporated.Enjoy it
This program randomly generates values and stores them in a 10 element array and thereafter prints the element and value within aswell as the histogram for the element value!
By re-running this program numerous times different values...
PCSA is a frequency domain analysis technique that can be used to transform PSDs (as those in a spectrogram) to the form of a two-dimensional histogram with frequency-magnitude bins. PCSA can be used to examine the spectral characteristics of a...
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...
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...
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...
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...
K-means image segmentation based on histogram to reduce memory usage which is constant for any image size.