Methods for quality control of contact lenses

A method for inspecting contact lenses, the method comprising:

• receiving an input image indicative of a subject contact lens, optionally wherein the input image was acquired while the contact lens was in a contact lens package;
• analyzing the input image using (i) an ensemble model comprising a first learning model that is scale independent running in parallel with an artifact model, and (ii) a second learning model that is scale dependent running in series with the ensemble model;
• wherein the first learning model has been trained on a plurality of images comprising accept or reject conditions for the contact lenses:
• wherein the artifact model has been trained on a plurality of images comprising one or more artifact attributes for the contact lenses, the artifact attributes representing false reject conditions and comprising clear bubbles, folded lens, no artifact, or combinations thereof;
• wherein the artifact model is configured to identify false rejects from the first learning model based on the artifact attributes;
• wherein the second learning model is configured to identify false rejects from the first learning model and the artifact model based on artifacts being less than a predetermined size;
• outputting using the first learning model, a first foreign matter metric and first rejection data based on the analyzing of the input image, wherein the first foreign matter metric suggests one or more of the presence of foreign matter, a hole or edge defect in the contact lens, a hole in the contact lens package, or any combination thereof;
• differentiating using the artifact model, false rejection data from true rejection data in the first rejection data, wherein the false rejection data is indicative of the presence of the one or more artifact attributes;
• outputting using the artifact model, based on one or more of the false rejection data and the true rejection data, an artifact metric;
• outputting, using the second learning model and based at least on the first foreign matter metric and the artifact metric, a second foreign matter metric, wherein the second foreign matter metric is indicative of a final accept or reject condition of the subject contact lens;
• and
• rejecting or accepting the contact lenses based at least on the second foreign matter metric.