i have 10 folders and in each folder i have 20 images...for a folder i need to extract histogram normalization values of images and i need to store them for further use...i have written code but im unable to get stored values...help me ..thanks

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Gohan 2017-7-25

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评论： Image Analyst 2017-7-27

clear all;
close all;
Folder='G:\C\New folder (2)\(2)';
file1=fullfile(Folder,'*.png');
pngimages1=dir(file1);
numOfFiles=length(pngimages1);
for i=1:length(pngimages1)
    FileName1=pngimages1(i).name;
    fullFileName1=fullfile(Folder,FileName1);
    im1=imread(fullFileName1);
    im11=rgb2gray(im1);
    im111=imhist(im11)./numel(im11);
    im112=im111(i,:);
end
xlswrite('myFile.xlsx',im112);

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Jan 2017-7-25

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Do you mean

im112(i,:) = im111;

instead of

im112=im111(i,:);

@Gohan: Okay. Then what exactly is your question? Creating a loop over the folders? Before I could suggest some code for this, you have to explain, how the set of folders is recognized. Perhaps all subfolders of a specific base folder?

FolderList = dir(BaseFolder);
FolderList = FolderList([FolderList.isdir]);
FolderName = fullfile(BaseFolder, {FolderList.name});

Then run a loop over the folders.

Please explain "but im unable to get stored values" with any details. It is much easier to fix a problem than to guess what the problem is.

Image Analyst 2017-7-27

I don't even know what "histogram normalization values" are. Please explain in detail. The histogram() function can return 'pdf' and 'probability' versions of the histogram, if that's what you want - see its options.

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