Picture Prestel was an experimental feature of the videotex service Prestel. It was demonstrated in 1980, while Prestel was already struggling to attract users. Meanwhile, videotex inventions with better graphics started to emerge. Telidon and NAPLPS had vector graphics, Minitel had better textmode graphics, and CAPTAIN had photographics.
Picture Prestel was never really meant to be implemented, at least not until the end of the 80s.
Some teletext/videotex standards offer more than alphanumerical characters. Like the Canadian Telidon, which used vector graphics. These are Telidon images, made by Jacques Palumbo in 1986.
Meanwhile in Japan, videotex was more complex: it was alphaphotographic. That is a combination of text and hi-res photos. It supposedly worked like a fax machine for the TV. See Captain.
This is possibly the Japanese videotex system CAPTAIN.
