Method for the encoding of data for assistance in the reconstruction of a sub-sampled moving electronic image
US4980764A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Jun 21, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Jun 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/96
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for encoding data for assistance in the reconstruction of sub-sampled moving electronic images, particularly HDTV images transmitted by MAC channel, optimizing the representation of the assistance data while minimizing the corresponding throughput of data through compression of the image signal by segmentation of the image into homogeneous blocks of different sizes. An imbricated, hierarchical encoding is achieved on the image blocks, for assigning to the blocks a choice of processing, on the one hand, and a motion vector, on the other hand. When the sub-sampling/reconstruction processing chosen is of the motion compensation type (way 4) and wherein assistance data are generated under the control of a sequencer locked into a pre-determined image scanning procedure, segmentation information is selectively generated solely for the non-elementary blocks, and information on choice of motion vector is selectively generated only during the occurrence of a block with optimal processing by motion compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.