How can I pull a random image to display, from a folder of images using Psychtoolbox?

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Chelsea 2014-11-4

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https://ww2.mathworks.cn/matlabcentral/answers/161306-how-can-i-pull-a-random-image-to-display-from-a-folder-of-images-using-psychtoolbox

编辑： Orion 2014-11-4

Hello,

I am trying to show an image, randomly selected from a folder of images. I'm using Psychtoolbox. How do I instruct it to pull an image randomly from the folder, to display on the screen? The images can be used more than once.

Thanks!!

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Answer 1

Orion 2014-11-4

1
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https://ww2.mathworks.cn/matlabcentral/answers/161306-how-can-i-pull-a-random-image-to-display-from-a-folder-of-images-using-psychtoolbox#answer_157708

编辑：Orion 2014-11-4

在 MATLAB Online 中打开

I don't know this toolbox (not sure a lot of people do).

but in a general way, with matlab, you can do something like

% get all images (here all *.jpg found in the current directory, but you can specify the format you want)
MyImages = dir(fullfile(pwd,'*.jpg'));
% generate a random number between 1 and the number of images
RandomNumber = randi([1 size(MyImages,1)]);
% get the corresponding name of the image 
MyRandomImage = MyImages(RandomNumber).name;
% display the image
image(imread(MyRandomImage));