Iterate through Image histogram data for getting each pixel frequency individually

Question

Mel Foeller 2019-2-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/444271-iterate-through-image-histogram-data-for-getting-each-pixel-frequency-individually

编辑： KALYAN ACHARJYA 2019-2-11

Hi. I am new to matlab. I have created an image histogram using imhist function. Now I want to further process this imhist data.

1. I want to get the frequency(counts) of each pixel.

2. I want to store that frequency value against its pixel location into a new image.

I tried this code:

clc
clear all
close all
x=(im2double(imread('1.jpg')));
I = rgb2gray(x);
[counts,binLocations] = imhist(I)
stem(binLocations,counts);
binN = size(binLocations)
    [m,n,r]=size(x);
     newimg_l = zeros(m,n);
     for ii=1:size(I,1)
    for jj=1:size(I,2)
        % get pixel value
        pixel=I(ii,jj)
        disp(pixel)
          % check pixel value and assign new value
           for n=1:binN;
               temp = binLocations(n)
               if(pixel == temp)
               new_pixel = counts(n)
               end
            end  
          % save new pixel value in thresholded image
          newimg_l(ii,jj)=new_pixel;
      end
  end