How to apply a function to a large number of images

I have written an image processing function

When there is only one image, for load image using imread and save the result with the imsave command.

But I want to apply this function to 20,000 photos

How do I apply a function to this number of images and save the result?

Thank you for your help

Answer 1

[Kwasi]

@lech king, You can run the same code in a "for loop" such that each run will take one image and save the result in a folder.