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:
May. 24, 2016
Filed:
Sep. 30, 2014
The United States of America As Represented BY the Secretary of the Navy, San Diego, CA (US);
Kristofor B. Gibson, San Diego, CA (US);
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY, Washington, DC (US);
Abstract
A method involves using an adaptive wiener filter to generate a veiling estimate for a dark channel prior of each pixel in a single image having a contrast reducing scattering medium therein, where a global noise variance for the image is used to generate the veiling estimate and the global noise variance is naively estimated using all of the pixels in the image. A first contrast enhanced image is generated using a transmission calculated from the veiling estimate. The global noise variance is updated using statistics determined from the first contrast enhanced image, along with a second veiling estimate. A second contrast enhanced image is generated using the updated global noise variance, the second veiling estimate, and the local statistics from the original image.