A graphical data-compressor for compressing received arbitrary graphical data for subsequent transmission; where the graphical data-compressor comprises an input for receiving the received arbitrary graphical data, the input being linked to an analyzer for analysis of the received arbitrary graphical data into constituent geometrical parts, the analyzer being linked to an analytic scene describer, for description of said constituent geometrical parts as an analytic description of the received arbitrary graphical data, the analytic scene describer being linked to a transmitter, the transmitter being for transmission of the analytic description.