ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,490,904, issued on Dec. 9, was assigned to Covidien LP (Mansfield, Mass.).

"Enhanced image for non-contact monitoring" was invented by Dean Montgomery (Edinburgh, Great Britain), Paul S. Addison (Edinburgh, Great Britain) and Dominique Jacquel (Edinburgh, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for enhancing the image of a subject, such as a patient, in a video non-contact monitoring system to provide an enhanced image with clear distinction of the subject from the background. The methods include applying a histogram equalization transform, such as a contrast limited adaptive histogram equalization (CLAHE) transform, to the d...