producing the molded parts in a molding tool of a casting or molding machine,

demolding the molded parts from the molding tool at an elevated temperature in comparison with a surrounding temperature,

cooling down the molded parts from the elevated temperature to the surrounding temperature,

transporting the molded parts along a single transport conveying path to the inspection system after the step of demolding and while the molded parts are cooling down, wherein the molded parts are at least partially mixed during the transporting along the single transport conveying path and durations of the transporting for at least some of the molded parts to the inspection system have different lengths,

detecting the geometric feature and contactlessly measuring a temperature of each of the molded parts while the molded parts are passing through the inspection system in a conveyed stream, and

determining a corrected detected geometric feature of the each of the molded parts using a calibrating function taking into account the detected geometric feature and the measured temperature of the each of the molded parts to obtain the corrected detected geometric feature, wherein the calibrating function describes a change in the geometric feature in dependence on the measured temperature of a reference molded part, of which the geometric feature lies in a set range for the molded parts to be produced.