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A large segment of photo editing, especially when it’s done on a mobile device, involves applying simple pre-designed filters. While clicking a single filter is pretty simple on the user’s end, it involves some serious science on the back end.

https://www.youtube.com/watch?v=C_zFhWdM4ic//

In this video, Dr. Mike explains the fundamental principles behind things like Gaussian blur and edge detection, which are used to affect sharpness in an image.

If you’re not a nerd about imaging tech, it might seem kind of dry. But, if you’re a frequent filter user, it might shed some light on exactly what’s happening when you apply those Instagram filers.

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