Methods and arrangements for compressing image-based rendering (IBR) data using alignment and 3D wavelet transform techniques
US6567081B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Oct 19, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and arrangement are provided for compressing and transporting image-based rendering (IBR) data using alignment and three-dimensional (3D) wavelet transform techniques, and selectively decompressing portions of the resulting compressed data to render various two-dimensional (2D) views of a 3D scene. A compression engine compresses the IBR data using a 3D wavelet transform and outputs a compressed bitstream comprising encoded frequency coefficients associated with the IBR data. This compressed bitstream can then be provided to a separate decompression engine that selectively decodes portions of the compressed bitstream based on an access request for image data associated with a desired view from a rendering engine. Through a mixed cache, the progressive inverse wavelet synthesis (PIWS) engine decompresses the decoded portions with minimum calculation, and provides the decompressed IBR data to the rendering engine. The rendering engine is therefore able to render the decompressed IBR data without having to have the entire IBR bitstream decoded and decompressed at any one time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.