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. 07, 2020
Filed:
Jan. 25, 2016
Dolby International Ab, Amsterdam Zuidoost, NL;
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Klaas Heinrich Schueuer, Berlin, DE;
Uwe Michael Kowalik, Berlin, DE;
Arion Neddens, Berlin, DE;
Philipp Kraetzer, Berlin, DE;
Guan-Ming Su, Fremont, CA (US);
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Dolby International AB, Amsterdam Zuidoost, NL;
Abstract
The present invention relates generally to images. More particularly, an embodiment of the present invention relates to the pixel group segmented quantization and de-quantization of the residual signal in layered coding of high dynamic range images. By assigning the pixels in the residual image to different pixel groups based on the pixel value of the corresponding pixel in the decoded base layer signal, and by applying pixel group quantizing functions to assigned pixels a more efficient coding can be achieved.