histogram2(X,Y) creates a bivariate histogram plot of X and Y. The histogram2 function uses an automatic binning algorithm that returns bins with a uniform area, chosen to cover the range of elements in X and Y and reveal the underlying shape of the distribution.

This MATLAB function adjusts the histogram of the 2-D grayscale or truecolor image I such that the histogram approximately matches the histogram of the reference image ref.

This example shows how to create a histogram for an image using the imhist function. An image histogram is a chart that shows the distribution of intensities in an indexed or grayscale image.

Oct 29, 2017 · There are a few different ways you can convert scattered or sparse matrix data into a heatmap that provides some better visualization of the point density. The examples I'll show here will start with scattered data, so if you already have data in a 2D matrix/histogram you can skip the initial steps...

Jul 21, 2011 · Here is what I have: function [ result ] = Hist2D( vec0, vec1 ) % of those images. It assumes vectors are non-negative, and bins. % are the integers. % i-1 in vec0 and value j-1 in vec1. result = zeros(max(vec0)+1, max(vec1)+1); fvec0 = floor(vec1)+1; fvec1 = floor(vec0)+1;

Aug 18, 2003 · I have an image. i am calculating I,u,v components for it. I = (R+G+B)/3. u = R-G. v= G-B; Now , I want to find two-dimensional histograms over the chromatic information (u; v). Thanks in advance.

Oct 23, 2015 · To read images into the MATLAB environment you use the function imread, whose basic syntax is: imread(‘filename’). Other informative functions are: numel(f), to calculate the total number of ...

Generate the histogram of an image using 2-D Histogram block. The model outputs a bar plot that shows the frequency of occurrence for pixels values in the input image. Input image, specified as a vector, matrix, or 3-D array. Reset value for an input sequence, specified as a scalar.

Dec 23, 2010 · Can we look at the a* and b* values in a way that lets us start to see the different M&M colors in the original image? I want to do it by constructing a two-dimensional histogram of the a* and b* values. There are many different ways you …

Jun 12, 2017 · I am wondering if there is any build in function or an easy way to plot a histogram of elements of a 2d array. For example, if A=rand(100,1), then A is an 1D array, and hist(A) can do the histogram.