File format with variable data

A method for controlling a sensor system based on data, wherein the data is representative of a plurality of virtual objects, wherein the data comprises constant data and variable data, the method comprising:

• controlling the sensor system to search for real objects,
• wherein the real objects correspond to the plurality of virtual objects,
• wherein the plurality of virtual objects are represented in the variable data based on a range of values and/or probability functions of at least one variable element(s);
• and
• obtaining sensor data from the sensor system,
• wherein the sensor data is representative of physical properties of the real objects,
• wherein the real objects correspond to the at least one variable element(s).

An apparatus comprising

• a processor circuit;
• and
• a memory circuit comprising a first portion and a second portion,
• wherein the first portion is arranged to store instructions for the processor circuit,
• wherein the second portion comprises non-volatile memory,
• wherein the processor circuit is arranged to store, constant data in the second portion,
• wherein the constant data is a portion of a data,
• wherein the constant date corresponds to physical properties of the plurality of virtual objects
• wherein the physical properties of virtual objects remain constant when the data is read,
• wherein the constant data comprises at least one constant element(s),
• wherein the at least one constant element(s) is representative of physical properties of at least one of the plurality of virtual objects,
• wherein the processor circuit is arranged to store variable data in the second portion,
• wherein the variable data is a portion of the data,
• wherein the variable data corresponds to physical properties of the plurality of virtual objects,
• wherein the physical properties of virtual objects are uncertain at the time of storing the data,
• wherein the variable data comprises at least one variable element(s),
• wherein the at least one variable element(s) is representative of uncertain physical properties of at least one of the plurality of virtual objects,
• wherein each variable element comprises a range of values and a probability function for the range of values.