How can i make .csv data set from .png images?

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Md. Raihan Uddin 2018-3-9

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https://ww2.mathworks.cn/matlabcentral/answers/387370-how-can-i-make-csv-data-set-from-png-images

评论： Walter Roberson 2021-6-25

I have 20 .png images, i want to convert them in .csv format.

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hazal once 2018-6-28

How can I make its reverse? CSV to Jpeg or png

Walter Roberson 2018-6-28

For csv to image file, sometimes you can just reshape() and imwrite(), but sometimes you have to do griddata() and imwrite() the result. It depends what the values in the data file represent and whether you have a grid of them or just scattered values.

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saddam hussain 2021-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/387370-how-can-i-make-csv-data-set-from-png-images#answer_733390

I have an images in jpg format how to make a csv file from this

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Walter Roberson 2021-6-25

在 MATLAB Online 中打开

https://www.mathworks.com/matlabcentral/answers/387370-how-can-i-make-csv-data-set-from-png-images#comment_543901

RGBImage = imread('fingerprint.jpg');
csvwrite(filename, reshape(RGBImage, size(RGBImage,1),[]));

This "unrolls" the M x N x 3 .jpg image into a csv that stores M rows and (N*3) columns.

You might prefer other arrangements for larger images: if you were to be using the data with Excel, you would risk exceeding the maximum number of columns of .xls and .xlsx files.

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