Hierarchically compressing and coding and storing image data
US7627185B2 · kind B2 · utility
5Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | May 12, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99943
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus hierarchically compresses and codes image data by subjecting pixel values of the image data to a discrete wavelet transform, quantization and coding for each of one or a plurality of rectangular regions into which the image data is divided. The image processing apparatus includes a hierarchical coding unit to compress and code the image data in a state where the image data is divided for each hierarchical layer, to obtain compressed codes, and a distributively storing unit to distributively store the compressed codes that are divided for each hierarchical layer by the hierarchical coding unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.