Back in the mid 80's
I was fortunate enough to go to a class in Los Angeles that was instructed by some of the technical folks involved in the film (sadly I don't remember their names). It was 3 or 4 seminars that described the use of computers to generate the digital assets on frames of film. My recollection is that they were using first generation Cray computers to do the work. I was fascinated and eventually worked my way into a graphics career and then an IT career supporting modern video production workstations due to that experience. Thanks for the reminder of my origins. It is not often that I think of that excellent class!