Telidon (1978) was a Canadian videotex service with both text and vector graphics. It could be used for mass communication on TV, or two-way communication using modems. Telidon required more complex decoding than its competitors, normally using Z80 or 6809 processors. Via.
Facial Recognition by Al Jarnow, 1978. “The stop-motion short Facial Recognition demonstrates image resolution as kids build images of a familiar face with more and more dots.” Jarnows animations were used by PBS and Sesame Street. source