be designated with m i t with the index i to be the list number uniquely associated with the respective control point 62 and t to indicate the time instant at which this control point is at the position m i t in other words m i t is a vector defining the location of the control point i with reference to a coordinate system 66 with a predetermined origin 68 the entirety of all control points i defining the graphics model at a time instant t will also sometimes be referred to as m t in the following with m t u2212 1 the entirety of the control points defining the graphics model at a time instant t u2212 1 is designated i e at a time instant immediately before the time instant t with m t u2212 2 the entirety of the control points defining the graphics model at a time instant t u2212 2 etc the 3d model m t at the time instant t is the one currently to be compressed when the data stream now arrives at the input 12 at first the first data portion arrives which defines the graphics model at the first time instant t 0 in this situation the encoder 10 is missing prior information on the graphics model in other words this model has then not yet been pre processed and the mesh memory 50 is still empty in this situation the inter encoding path 24 cannot perform prediction for this reason in this case the.