Edge detection shader for webcam

Hi all, I'm trying to achieve the same effect more or less as the "Tron Mode" on the HTC Vive's passthrough camera:

I would apply a similar effect on the output of a webcam. I've tried searching for this but can't seem to find anything, I'm not sure what this effect is actually called, the closest I could think of was edge detection.

Can anyone point me in the right direction?

 

The term you want to search for is Sobel Filter

 

Thank you, that definitely produced better search results! I found this: https://github.com/jean-moreno/EdgeDetect-PostProcessingUnity but I'm not sure if it will work for my case where I need to apply it to a texture.

 

Technically, the way a post process effect works is by copying the screen contents into a texture, then using a shader with that texture. There are simpler examples of using a sobel filter without all of the post processing stuff on top, but you're likely going to want to write a custom shader for this yourself so you can retain some amount of the original image's color if you really do want something like what Valve does to their VR camera pass through view.