Complex sentence: Given a set of about 30 CAD models of car wheel rims, the task was to find a common parametrization that is capable of generating each of the individual instances ("generative surface reconstruction").
Split into simpler sentences: Given a set of about 30 CAD models of car wheel rims, the task was to find a common parametrization for all of them. It was supposed to generate each of the individual instances ("generative surface reconstruction").