Temporal-spatial error concealment apparatus and method for video signal processors
US5621467A · kind A · utility
94Cited by
11References
19Claims
0Family size
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Key dates
| Filing date | Feb 16, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Feb 16, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/895
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video decompression system includes block error concealment means for generating substitute data for lost blocks of pixel data. An interpolator generates both spatially and temporally interpolated or predicted blocks of data for concealing a lost block. Pixel data in the respective blocks of spatially and interpolated data are transformed to coefficients representing frequency spectra. A substitute block of coefficients is assembled from coefficients from both the transformed blocks, according to a predetermined criteria. The substitute block is transformed back to the spatial domain for substitution of lost pixel values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.