Read, process and write image dataset

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Aravind Prabhu Gopala Krishnan 2021-7-30

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https://ww2.mathworks.cn/matlabcentral/answers/889092-read-process-and-write-image-dataset

评论： Aravind Prabhu Gopala Krishnan 2021-8-2

Hello, I have image dataset containing 5000 images. I enhanced the one image from this dataset in the matlab my code is working good and i got good result. Now i need help in processing this all 5000 images using my filter code and have to store that processed images in my laptop local folder. How to read, process and write 5000 images in one go. can anybody know how to do that?

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Aravind Prabhu Gopala Krishnan 2021-7-30

I need help in storing my processed 5000 images to my laptop thats it bro.

Rik 2021-7-30

What is your question? Weren't you already writing the result to local storage? How does your current pipeline look? It should start with a way to load an image, and it should end with writing that image to some storage. How are you doing that last step?

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Answer 1

KSSV 2021-7-30

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https://ww2.mathworks.cn/matlabcentral/answers/889092-read-process-and-write-image-dataset#answer_757327

infolder = ''   % give the path of the folder where your images are present 
outfolder = ''   % give the path of the folder where you want to save images 
imgFiles = dir([infolder,filesep,'\*.png']) ;  % give extension of your images 
N = length(imgFiles) ;   % total images in the foder 
for i = 1:N
    thisFile = [infolder,filesep,imgFiles(i).name] ;   % each image file 
    [filepath,name,ext] = fileparts(thisFile) ;  % get name of the image file and extension 
    outFile = [outfolder,filesep,[name,ext]] ;   % write image file on this name here 
    I = imread(thisFile) ;   % read image into 
    % do what you want on I 
    imwrite(I,outFile) ;   % write the image in the said folder on the name 
end

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Aravind Prabhu Gopala Krishnan 2021-7-30

编辑：KSSV 2021-7-30

path = 'C:\Users\91894\Desktop\matlab\Dataset\images_001\images';
outfolder = 'C:\Users\91894\Desktop\matlab\Dataset\images_001\processed image';
img = imageDatastore(path,'IncludeSubfolders',1,'LabelSource','foldernames');
T = countEachLabel(img);
N = length(img.Files);
% i = readimage(img, 3000);
% imshow(i);
refback = zeros(25, 25);
for i = 1:N
    data = readimage(img,N);
    J = imresize(data,[256 256]);
    for f = 1:4
        SpatDog = fspecial('gaussian',25,0.732) - fspecial('gaussian',25,0.785);
        FreqDog = fftshift(fft2(fftshift(SpatDog)));
        Y = abs(FreqDog);
        refback = refback + im2double(Y);
    end
    refback = (1/4) * refback;
    Y = fftshift(ifft2(fftshift(refback)));
    
    conv = conv2(Y,J);
end

This is my code, ur code format is not fiiting for my project. Can you please tell me how to store my processed image, its in the variable name conv, i need to write that images in my local folder, thats all. I cannot process the filter with your code. i attacked my workspace too. In that am having my processed image in conv 280x280, i need to store that.