Digital 3D/stereoscopic video compression technique utilizing disparity and motion compensated predictions
US5619256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | May 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0085
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Efficient digital compression of 3D/stereoscopic video is achieved by a novel technique in which various views forming 3D/stereoscopic video are coded by utilizing the redundancies among the views. Coding is performed in a manner compatible with existing equipment to allowing decoding of one layer of video for display on normal (i.e., monoscopic) displays. The motion compensated discrete cosine transform ("DCT") coding framework of existing standards such as the Motion Pictures Expert Group-Phase 2 ("MPEG-2") video standard is exploited, and when necessary extended, to result in highly efficient, yet practical, coding schemes. In constrast with known techniques of encoding the two views forming stereoscopic video which rely on the use of a disparity estimate between the two views (where one of the views is the reference, coded by itself and the other is disparity compensated predicted and coded with respect to the reference view), the present techniques invention utilize one disparity estimate and one motion compensated estimate. Two novel methods for combining these estimates for prediction are provided. The first method provides an average between the two estimates; the second me…
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