How to make matrix from images in folders

Question

Kong 2020-3-11

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https://ww2.mathworks.cn/matlabcentral/answers/510214-how-to-make-matrix-from-images-in-folders

回答： Payas Bahade 2020-3-16

采纳的回答： Payas Bahade

Hello.

I want to convert images in folders to CSV file.

(name of images : weighted2, weighted3, weighted4, weighted5,,,,)

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Answer 1

Payas Bahade 2020-3-16

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Hi Kong,

I am assuming all images are of ‘.jpg’ format and located in same folder. If they are of different format, tweak below provided code as required.

Below mentioned code can be used for writing each image into separate CSV files:

for i=1:5
    imName = strcat('weighted', num2str(i),'.jpg');
    imVal = imread(imName);
    fName=strcat('weightedimage',num2str(i),'.csv');
    writematrix(imVal,fName);
end

And for saving images to different worksheets of a single excel file, use below mentioned code:

for i=1:5
    imName = strcat('weighted', num2str(i),'.jpg');
    imVal = imread(imName);
    writematrix(imVal, 'weightedimages.xlsx','Sheet',i);
end