Who is Marcelli Wein and Nestor Burtnyk?

Answer 1

Copy from wikipedia:

http://en.wikipedia.org/wiki/Tweening

The use of computers for inbetweening was pioneered by Nestor Burtnyk and Marceli Wein at the National Research Council of Canada. They received a Technical Achievement Academy Award in 1997, for "pioneering work in the development of software techniques for computer assisted key framing for character animation".

Answer 2

Marcelli Wein and Nestor Burtnyk are pioneers in computer graphics and animation. They co-developed the concept of particle systems, which are commonly used in computer graphics for simulating natural phenomena like fire, smoke, and explosions. Their work has had a significant impact on the field of computer-generated imagery.