How to Create an Ultra High 121Mpix Resolution Image for Improving Watch Surface and Saphire Quality Inspection
Merging a set of mosaics into an ultra high resolution image for cracks, scratches and dust inspection as tiny as 5 microns.
We could not find any industrial camera on the market that provide a minimum resolution of 5um/pixel on a field of view of 50x50mm for watch surface, glass and dust quality inspection. As we have an Universal Robot UR3E sitting in the office, we decided to quickly implement a merger that can stitch together a set of mosaic images to create a image with the requested resolution. We end up with a resolution of more than 11’000 x 11’000 pixels (121 Mpix).
The video below shows how we set up quickly a solution using an Universal Robot UR3E for grabbing a set of 24Mpix images using an industrial grade camera for enhancing watch quality control application. As a result after stitching all of them together into a 121Mpix image, we successfully satisfy the specification of 5um/pixel on a field of view of 50x50mm. This high resolution image will allow inspecting dials surface anomalies, dusts, glass cracks and saphire defects as tiny as 5 microns.
Moreover, our setup is able to read OCR, barcodes and production-ID on the back of the watch. These numbers are then matched with the manufacturer database for traceability and production follow up.
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