ALEXANDRIA, Va., July 14 -- United States Patent no. 12,682,494, issued on July 14, was assigned to Huvitz Co. Ltd. (Anyang-si, South Korea).
"Method for calibrating intraoral scanner" was invented by Myoung Namgung (Anyang-si, South Korea), Min Soo Cho (Anyang-si, South Korea) and Weon Joon Lee (Anyang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of calibrating an intraoral scanner includes irradiating light of a third color using a projector onto a first calibration plate having a background of a first color and patterns of a second color, which are arranged at predetermined intervals within the background; obtaining an image of the patterns with an increased contrast by photogra...