Detection of motion activity saliency in a video sequence
US10104394B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Aug 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/6811
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A streaming video or a stored video is analyzed to identify salient features. The salient features are the more interesting portions of the video because salient features include the most motion. A motion vector field including a motion vector for multiple pixels in the video is generated. The motion vector field is partitioned into grid blocks, and each of the grid blocks is divided into a set of orientation ranges. The vectors of the motion vector field for each grid block are binned into the orientation ranges. A motion score is calculated based on a count of motion vectors for the orientation ranges. The section of the video having higher or the highest motion score is designated as a salient feature. Among other applications, salient features may be used for thumbnail images, highlight reels, or video editing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.