Fast crowd segmentation using shape indexing
US8358806B2 · kind B2 · utility
7Cited by
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23Claims
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Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Apr 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/53
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for performing crowd segmentation includes receiving video image data (S21). Background differencing is performed on the received video image data to identify a foreground silhouette shape (S22). Approximate number and position of human subjects within the received video image data are determined by matching the foreground silhouette shape against a set of predetermined foreground silhouette shapes, for each of which a number and position of human subjects is known (S28). The estimated number and position of the human subjects is refined to determine a final number and position of the human subjects (S27).
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