Method and device for automatic optical inspection

A method of training an inspection model for automatic optical inspection (AOI), comprising:

• collecting images of industrial components in a plurality of domains as a multi-domain AOI training dataset, wherein the plurality of domains correspond to a plurality of industrial component types, respectively or correspond to a plurality of industrial component production lines, respectively;
• training the generic feature extraction sub-model in the inspection model based on the multi-domain AOI training dataset to obtain a trained generic feature extraction sub-model;
• training at least one task inspection sub-model associated with a particular AOI task of a first domain in the inspection model based on an image of an industrial component in the first domain as a single-domain AOI training dataset, the first domain corresponding to a first industrial component type or corresponding to a first industrial component production line, wherein the trained generic feature extraction sub-model receives an image in the single-domain AOI training dataset and outputs a first feature representation of the image, and the at least one task inspection sub-model receives the first feature representation of the image and predicts at least one inspection result associated with the particular AOI task of the first domain.

A device for automatic optical inspection (AOI), comprising:

• an image obtaining module configured to obtain an image of an inspected component of a first domain, the first domain corresponding to a first industrial component type or corresponding to a first industrial component production line;
• an inspection module, the inspection module comprising a generic feature extraction sub-module and at least one task inspection sub-module associated with a particular AOI task of the first domain, the generic feature extraction sub-module configured to generate a first feature representation of the image based on the image of the inspected component, and the at least one task inspection sub-module configured to generate at least one inspection result associated with the particular AOI task of the first domain based on the first feature representation of the image.