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:
Feb. 09, 2021
Filed:
May. 01, 2017
Sony Corporation, Tokyo, JP;
Hiroaki Eto, Kanagawa, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
Provided are an apparatus and a method for generating a high quality SDR image without significant reduction in image average luminance by matrix conversion for an HDR image. An image signal processing unit that converts the HDR image into the SDR image converts a pixel value of the HDR image into a pixel value of the SDR image, applying one conversion matrix to low luminance region pixels having luminance that is a prescribed threshold or less among constituent pixels of the HDR image. A high luminance region pixel having higher luminance than the prescribed threshold is set as a highest output pixel of the SDR image after conversion. The conversion matrix to be applied is a matrix having setting in which a change rate of a memory color set in a Macbeth color chart becomes smaller.