Apparatus and method for motion detection in video
US9001207B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2011 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motion detection method of a video camera includes calculating differences for a sum of accumulated differences (ΔSAD) for corresponding macro blocks in successive frames of video. The method may include identifying motion-generative macroblocks and regions of connected macroblocks. Candidate-motion regions may be defined in a frame and a bounding box may be formed around each of the candidate-motion regions. If corresponding bounding boxes in a plurality of successive frames have substantially the same location, size, and shape in the plurality of successive frames, and if the plurality of successive frames are in a temporal window of successive frames, then the corresponding bounding boxes may indicate motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.