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:
Apr. 07, 2020
Filed:
Jul. 13, 2018
Mediatek Inc., Hsin-Chu, TW;
Cheng-Hsuan Shih, Hsin-Chu, TW;
Chia-Ying Li, Hsin-Chu, TW;
Ya-Hsuan Lee, Hsin-Chu, TW;
Hung-Chih Lin, Hsin-Chu, TW;
Jian-Liang Lin, Hsin-Chu, TW;
Shen-Kai Chang, Hsin-Chu, TW;
MEDIATEK INC., Hsin-Chu, TW;
Abstract
Methods and apparatus of processing 360-degree virtual reality images are disclosed. According to one method, a 2D (two-dimensional) frame is divided into multiple blocks. The multiple blocks are encoded or decoded using quantization parameters by restricting a delta quantization parameter to be within a threshold for any two blocks corresponding to two neighboring blocks on a 3D sphere. According to another embodiment, one or more guard bands are added to one or more edges that are discontinuous in the 2D frame but continuous in the 3D sphere. Fade-out process is applied to said one or more guard bands to generate one or more faded guard bands. At the decoder side, the reconstructed 2D frame is generated from the decoded extended 2D frame by cropping said one or more decoded faded guard bands or by blending said one or more decoded faded guard bands and reconstructed duplicated areas.