How to save Histogram of Multiple Images

Question

Diah Junaidi 2019-7-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/474206-how-to-save-histogram-of-multiple-images

评论： KALYAN ACHARJYA 2019-7-31

I used this code but the results is unsatisfied :( please help me :(

% Specify the folder where the files live.
myFolder = 'D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\imagesss';
% Check to make sure that folder actually exists.  Warn user if it doesn't.
% if ~isfolder(myFolder)
%   errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
%   uiwait(warndlg(errorMessage));
%   return;
% end
% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, '*.JPG'); % Change to whatever pattern you need.
theFiles = dir(filePattern);
for k = 1 : length(theFiles)
  baseFileName = theFiles(k).name;
  fullFileName = fullfile(myFolder, baseFileName);
  methodFile = imread(fullFileName);
  grayscale = rgb2gray(methodFile);
  histogram = imhist(grayscale);%using this for histogram
  currentImageArray = histogram;
  currentImage{k}=currentImageArray;
  
for i = 1 : 1
outputFolder = 'D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Histogram Dataset\1';
outputFileName = fullfile(outputFolder, sprintf('Hasil Citra Ground Truth_%d_%d.jpg', k, i));
imwrite(currentImage{k}, outputFileName);
end
end

here the results:

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KALYAN ACHARJYA 2019-7-31

编辑：KALYAN ACHARJYA 2019-7-31

"results is unsatisfied' means?

You want to save histogram plots ??

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Answer 1

KALYAN ACHARJYA 2019-7-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/474206-how-to-save-histogram-of-multiple-images#answer_385543

编辑：KALYAN ACHARJYA 2019-7-31

在 MATLAB Online 中打开

Images=dir('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\imagesss*.jpg'); %Database Image folder
%......................[] ^ IS this OK?
outDirectory='D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Histogram Dataset\hist_data\'; % To save histograms
%......................^ set valid path "hist_data" folder will create by Matlab itself 
mkdir(outDirectory);
for i=1:length(Images)
ImgName=strcat('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\imagesss\',Images(i).name);
RGBImage=imread(ImgName);
grayImage=rgb2gray(RGBImage);
imhist(grayImage);
imwrite(gcf,strcat(outDirectory,Images(i).name));
end

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Diah Junaidi 2019-7-31

在 MATLAB Online 中打开

I got this error:

Error using imwrite (line 420)

Expected DATA to be one of these types:

numeric, logical

Instead its type was matlab.ui.Figure.

Error in cobaHistogramDataset (line 11)

imwrite(gcf,strcat(outDirectory,Images(i).name));

by using this code:

Images=dir('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\imagesss\'); %Database Image folder
%......................[] ^ IS this OK?
outDirectory='D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Histogram Dataset\1'; % To save histograms
%......................^ set valid path "hist_data" folder will create by Matlab itself 
% mkdir(outDirectory);
for i=1:length(Images)
ImgName=strcat('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\imagesss\set1_a.jpg',Images(i).name);
RGBImage=imread(ImgName);
grayImage=rgb2gray(RGBImage);
imhist(grayImage);
imwrite(gcf,strcat(outDirectory,Images(i).name));
end