Geometrical compensation in additive manufacturing

A system comprising:

• a processor;
• and
• a memory storing instructions executable by the processor to:
• obtain a first measurement value of a first version of an object, the first version generated using additive manufacturing apparatus and based on object model data;
• obtain a second measurement value of a second version of the object, the second version generated using the additive manufacturing apparatus and based on the object model data to which a geometrical compensation parameter value has been applied;
• determine a difference between the first and second measurement values;
• determine a result of application of the geometrical compensation parameter value to the object model data on which basis the second version of the object has been generated, using the difference between the first and second measurement values;
• determine a corrected geometrical compensation parameter value based on the determined result;
• and
• generate, using the additive manufacturing apparatus, a target object based on target object model data to which the corrected geometrical compensation parameter value has been applied.

A non-transitory machine-readable medium storing program code executable by a processor to perform processing comprising:

• obtaining a first measurement value of a first version of an object, the first version generated using additive manufacturing apparatus and based on object model data;
• obtaining a second measurement value of a second version of the object, the second version generated using the additive manufacturing apparatus and based on the object model data to which a geometrical compensation parameter value has been applied;
• determining a difference between the first and second measurement values;
• determining a result of application of the geometrical compensation parameter value to the object model data on which basis the second version of the object has been generated, using the difference between the first and second measurement values;
• determining a corrected geometrical compensation parameter value based on the determined result;
• and
• generating, using the additive manufacturing apparatus, a target object based on target object model data to which the corrected geometrical compensation parameter value has been applied as opposed to the geometrical compensation parameter.