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:
Jan. 08, 2019
Filed:
Apr. 01, 2016
Applicant:
Stmicroelectronics (Grenoble 2) Sas, Grenoble, FR;
Inventors:
Mathieu Thivin, Voreppe, FR;
Grégory Roffet, Coublevie, FR;
Assignee:
STMICROELECTRONICS (GRENOBLE 2) SAS, Grenoble, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); H04N 9/04 (2006.01); H04N 9/67 (2006.01);
U.S. Cl.
CPC ...
H04N 9/04 (2013.01); H04N 9/67 (2013.01); H04N 9/045 (2013.01);
Abstract
Tone mapping is performed by digital image processing circuitry on a macro-pixel basis. A luminance value of a macro-pixel of a digital image in a color space is determined. The macro-pixel includes a plurality of individual pixels. Respective tone-mapping gain values of each pixel of the macro-pixel are determined based on the determined luminance value of the macro-pixel. The determined tone-mapping gains are applied to the respective pixels of the macro-pixel. The color space may be a CFA color space, such as a Bayer color space.