System and method for extracting spatially reduced image sequences in a motion compensated compressed format
US6108448A · kind A · utility
82Cited by
5References
22Claims
0Family size
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Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Given compressed video which supports the coding of interlaced frames through DCT and motion compensation, different construction methods are applied based on select DCT domain coefficients and/or motion vector informations to produce spatially reduced images without decompressing. The spatially reduced images can then be used for video browsing, authoring and processing purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.