Question

Write a MATLAB Code that takes the sum of white and gray pixels and put them in a histogram with a threshold

Answer 1

matlab code is below:-

Execute | > Share demo.m STDIN 1 clc 2 close all; % CLose all figures (except those of imtool.) 3 workspace; % Make sure the workspace panel is showing 4 fontSize- 20; 5 % Read in a standard MATLAB gray scale demo image 6 folder fullfile(matlabroot, Itoolbox\images\imdemos); 7 baseFileNamecameraman.tif; % Clear the command window 8 fullFileName fullfile(folder, baseFileName); 9 % Get the full filename, with path prepended 10 full FileName = fullfile(folder, baseFileName); 11 if ~exist(fullFileName, file') 12 % Didn't find it there . Check the search path for it. 13 ful!FileName baseFileName; % No path this time. 14 if exist(fullFileName, file') 15 16 % still didn't find it. Alert user. errorMessage sprintf(" Error : %s does not exist.', fullFileName); uiwait (warndlg(errorMessage)); return; 18 19 20 end 21 grayImage=imread(ful!FileName); 22 % Get the dimensions of the image. numberOfColorBands should be 23 [rows columns numberOfColorBands]-size(grayImage); 24 % Display the original gray scale image. 25 subplot (2, 2, 1); 26 imshow(grayImage, []): 27 title('Original Grayscale Image FontSize', fontSize); 28 % Enlarge figure to full screen 29 set (gcf, units', 'normalized, 'outerposition',[e e 1 1]); 30 set (gcf, 'name, "Demo by ImageAnalyst', 'numbertitle', 'off') 31 % Find edges 32 stdImage stdfilt(grayImage); 33 % Display the image end 1.

34 subplot (2, 2, 2); 35 imshow(stdImage, []); 36 title( Standard Deviation of Image, FontSize', fontSize); 37 % Let's compute and display the histogram 38 [pixelCount grayLevels]= hist(std!mage, 256); 39 subplot (2, 2, 3); 40 bar(pixelCount): 41 title( 'Histogram of original image', FontSize', fontSize); 42 x1in([0 grayLevels(end)); % Scale x axis manually 43 grid on; 44 % Threshold to get binary image of where the edges are strong 45 binaryImage=stdImage > 30; 46 % Display the image 47 subplot(2, 2, 4); 48 imshow (binaryImage, [): 49 title( 'Binary Image (where edges are)'. FontSize', fontSize):