ALEXANDRIA, Va., April 9 -- United States Patent no. 12,273,621, issued on April 8, was assigned to Amazon Technologies Inc. (Seattle).
"Guided camera focusing using barcode images" was invented by Ali Can (Andover, Mass.) and Frank Preiswerk (Brooklyn, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques for guiding camera focusing using barcode images are described herein. In an example, a computer system receives an image of a calibration target having a center that is aligned with an optical axis of a camera that generated the image. The calibration target includes steps that are located at different depths with respect to a lens of the camera. The calibration target includes barcode sets. In...