I started on Orad back in 1997…which was an Israeli competitor to Discreet Frost for live broadcast virtual studios, and ran on an SGI Onyx Reality Engine 2!
I’m sure there are Flame people who came in from some oblique angles too…maybe medical imaging or something?!
Back in the day, a couple of us Harry ops at MPC would go down to Quantel to teach people how to use Harry, I was amazed when I was told that some of the tech came from the medical side and difference matting came from military applications.
A lot of our tech comes from the military. Siggraph in the eighties (and maybe still) had a huge contingent of rocket scientists. We owe the military for tracking and flat screens, along with a myriad of other tech we take for granted. As a buddy of mine once commented at my first siggraph convention, “It’s the dark side of computer graphics.”