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. 30, 2026
Filed:
Mar. 03, 2023
Apple Inc., Cupertino, CA (US);
Muge Wang, San Jose, CA (US);
William T Warner, Sunnyvale, CA (US);
David R Pope, Campbell, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
An image processing circuit for performing local tone mapping (LTM) after image warping. The image processing circuit includes a warping circuit that warps an input image to generate a warped image, and a LTM circuit coupled to the warping circuit. The LTM circuit determines an input color component value for a color component of a pixel in a version of the warped image, determines an output color component value for the color component of the pixel, based on mapping of coordinates of pixels in the warped image to coordinates of pixels in the input image, determines a gain value for the pixel as a ratio of the output color component value relative to the input color component value, and adjusts color component values for color components of the pixel using the gain value to generate adjusted color component values for the color components of the pixel in an output image.