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B&W Image to Excel File with 0 and 1

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Hello, I want to take a B&W image and convert it to an excel file with 0 and 1. Essentially it will put the image into excel labeling all black areas as a 1 and all white areas as a 0 making the image in excel. I am not sure how'd I go about doing that.

Accepted Answer

Walter Roberson
Walter Roberson on 10 Sep 2021
Edited: Walter Roberson on 10 Sep 2021
YourImage = imread('TheFileNameGoesHere.jpg');
if ndims(YourImage) > 2; YourImage = rgb2gray(YourImage); end
BW = imbinarize(YourImage);
writematrix(double(BW), 'NameOfExcelFileGoesHere.xlsx')
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More Answers (1)

Dyuman Joshi
Dyuman Joshi on 10 Sep 2021
Edited: Dyuman Joshi on 10 Sep 2021
1) Use imread to read the image. The values in the uint8 (default format) array will be from 0 to 255.
2) Divide the array by 255 to get values from 0 to 1.
3) The matrix will be 3D matrix, which you won't be able to convert to a excel file. Either you can reshape the matrix to a 2D matrix and then write or you can write three files/sheets as you wish (Sheets).
  2 Comments
Dyuman Joshi
Dyuman Joshi on 10 Sep 2021
I was going to make that distinction in the answer initially, but I did not and linked the imread webpage (where the specifics related to this are mentioned) hoping that if OP might comment/ask again, I can reply with the reference.
Due to the 2nd point you mentioned, I presumed that the matrix will (most probably) be a 3D matrix. However, your answer here is more fitting in the general sense (as always).

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