Method and devices for depth map processing
US10198792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2010 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | May 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2213/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Several implementations relate, for example, to depth encoding and/or filtering for 3D video (3DV) coding formats. A sparse dyadic mode for partitioning macroblocks (MBs) along edges in a depth map is provided as well as techniques for trilateral (or bilateral) filtering of depth maps that may include adaptive selection between filters sensitive to changes in video intensity and/or changes in depth. One implementation partitions a depth picture, and then refines the partitions based on a corresponding image picture. Another implementation filters a portion of a depth picture based on values for a range of pixels in the portion. For a given pixel in the portion that is being filtered, the filter weights a value of a particular pixel in the range by a weight that is based on one or more of location distance, depth difference, and image difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.