By now, you have surely used a video conferencing tool like Teams or Zoom that has automatic background replacement to hide your messy home office from colleagues and customers.

Also by now, you have likely noticed that the technology is still a little rough, or fuzzy, around the edges.

Two Minute Papers explores some revolutionary research that can take this to the next level of believability with a closer look at the  paper  “Background Matting: The World is Your Green Screen.”

Applied Science explores a type of optics that defy conventional logic.

Telecentric and hypercentric optics are very different from our eyes or normal camera lenses. They have “negative” perspective or no perspective, respectively, leading to very unusual images. In this video I show how to use a common fresnel lens in the creation of your own telecentric optical system.