Methods and systems for assigning pixels distance-cost values using a flood fill technique
US9563962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2015 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | May 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are methods and systems for assigning pixels distance-cost values using a flood fill technique. One embodiment takes the form of a process that includes obtaining video data depicting a head of a user, obtaining depth data associated with the video data, and selecting seed pixels for a flood fill at least in part by using the depth information. The process also includes performing the flood fill from the selected seed pixels. The flood fill assigns respective distance-cost values to pixels of the video data based on position-space cost values and color-space cost values. In some embodiments, the process also includes classifying pixels of the video data as foreground based at least in part on the assigned distance-cost values. In some other embodiments, the process also includes assigning pixels of the video data foreground-likelihood values based at least in part on the assigned distance-cost values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.