Control method for controlling system and system

A system comprising:

• an imaging apparatus;
• and
• a processing apparatus having a learning model to which image data captured by the imaging apparatus is input, the processing apparatus configured to:
• perform machine learning on the learning model using, as supervised data, first image data obtained by capturing a first workpiece using the imaging apparatus set to a first imaging condition while changing a position of the first workpiece relative to the imaging apparatus;
• input, to the trained learning model, second image data obtained by capturing a second workpiece different from the first workpiece using the imaging apparatus set to the first imaging condition while changing a position of the second workpiece relative to the imaging apparatus and make an estimation as to whether the second workpiece has a defect based on the second image data;
• and
• in a case where an accuracy of the estimation as to whether the second workpiece has a defect is lower than a predetermined value, perform machine learning on the learning model using, as the supervised data, third image data obtained by capturing a third workpiece using the imaging apparatus set to a second imaging condition different from the first imaging condition while changing a position of the third workpiece relative to the imaging apparatus,
• wherein the first and second imaging conditions are shutter speeds.