Adaptation of illumination settings for optical measurement and inspection systems

An optical measuring system for optical inspection of a feature of interest on a workpiece, the optical measuring system comprising a training unit and one or more optical measuring devices, each optical measuring device comprising a computing unit, at least one camera and a plurality of light sources, the light sources allowing selection of a plurality of different light settings, the computing unit being configured to at least partially control an optical inspection functionality of the optical measuring system for optical inspection of the feature of interest,

• wherein the training unit is configured to:
• simulate illumination of a workpiece model to obtain synthetic images;
• train, based at least partially on the obtained synthetic images, an artificial-intelligence model to automatically control the plurality of light sources;
• and
• provide the artificial-intelligence model to the one or more optical measuring devices,
• wherein simulating the illumination of the workpiece model comprises:
• providing 3D data of the workpiece model;
• approaching a representation of a feature on the workpiece model with a virtual camera and a plurality of virtual light sources, wherein the virtual light sources are arranged corresponding to an arrangement of the light sources of one or more of the optical measuring devices and allow selection of the same plurality of light settings as these light sources;
• rendering a plurality of base images imaging the representation of the feature from the viewpoint of the virtual camera under a set of specific, pre-defined light settings of the virtual light sources;
• and
• obtaining the synthetic images for all possible light settings of the virtual light sources by compositing the base images,
• wherein each of the one or more optical measuring devices is configured to:
• infer, in at least one image captured by the at least one camera, properties of the feature of interest on the workpiece;
• control, automatically by the trained artificial-intelligence model and based at least on the inferred properties, the plurality of light sources to select a light setting for illuminating the feature of interest;
• and
• optically inspect, using the at least one camera, the illuminated feature of interest while the feature of interest is illuminated with the selected light setting.