ALEXANDRIA, Va., April 21 -- United States Patent no. 12,608,854, issued on April 21, was assigned to Align Technology Inc. (San Jose, Calif.).
"Systems and methods for teeth whitening simulation" was invented by Yun Gao (Cary, N.C.), Chao Shi (Morrisville, N.C.) and Christopher E. Cramer (Durham, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for simulating dental whitening. A two-dimensional (2D) image of a patient's oral cavity may be converted from a first color space to a CIELAB color space. A change in a blue-yellow color value (delta b value) with which to whiten the patient's teeth may be selected to increase a blue hue and decrease a yellow hue in the 2D image. A threshold l...