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:
Jun. 24, 2014
Filed:
Apr. 12, 2011
Michael Frank, Sunnyvale, CA (US);
Ulrich T. Barnhoefer, Cupertino, CA (US);
Michael Frank, Sunnyvale, CA (US);
Ulrich T. Barnhoefer, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
The present disclosure relates to the use of inverse dithering of color or grey-scale images. In certain embodiments, an image area may be selected having a center pixel. A predictive value of the image area may be found by averaging the values of the pixels in the image area. This predictive value may be compared to the center pixel's real value. A difference between the real value and the predictive value may then be found and used to diffuse the energy removed from the center pixel to neighboring pixels. By inverse dithering images using an energy diffusion approach, the images may be presented as having a more visually appealing display, even in situations where the images may undergo further edge enhancements.