imread with new name

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Jessica Yorzinski
Jessica Yorzinski 2022-8-22
评论： Jessica Yorzinski 2022-8-25
I want to pre-load images before displaying them later. In order to do so, I need to save them with different names. Here is the code to loop through the folder of images:
for i=1:50
Names=imageNames{i};
Number=num2str(i);
NewName=strcat('ImageID_','Number);
NewName=imread(Names);
end;
But, I'd like the images to be saved as a variable string (e.g., "ImageID_1", "ImageID_2", etc.) but it is instead saving the image as "NewName"
  1 个评论
Stephen23
Stephen23 2022-8-22
"I'd like the images to be saved as a variable string (e.g., "ImageID_1", "ImageID_2", etc.)"
And force yourself into writing slow, complex, inefficent code that you would need to access those variable names:
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
The simple, efficient, recommended solution is to use indexing into one array (e.g. a cell array), just as the documentation shows:
https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

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Voss
Voss 2022-8-22
Instead of 50 different variables named ImageID_1, ImageID_2, etc., how about one variable (a cell array) that contains all 50 images?
n_images = numel(imageNames);
Images = cell(1,n_images);
for ii = 1:n_images
Images{ii} = imread(imageNames{ii});
end
Then you can access any image by indexing into Images. For example, to get the 10th image:
Images{10}

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