The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Sep. 12, 2023
Align Technology, Inc., San Jose, CA (US);
Align Technology, Inc., San Jose, CA (US);
Abstract
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 lightness value of individual teeth in the 2D image may be identified. The 2D image in the CIELAB color space may be transformed by adjusting delta b values of each tooth based, at least in part, on an evaluation of a lightness value of each tooth relative to the threshold lightness value to form a whitened 2D image. Adjusting the delta b values may include limiting the delta b values to within a predetermined range. A whitened 2D image may be outputted.