Image processing apparatus and method, and its computer program and storage medium
US6909810B2 · kind B2 · utility
41Cited by
5References
60Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2001 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
MPEG-4 encoded data is input, and a shape code decoder decodes shape data contained in the encoded image data to obtain ROI information contained in that image. The frequency transforms of the decoded image data are computed to generate transform coefficients. A bit shift unit bit-shifts transform coefficients, corresponding to the ROI, of the generated transform coefficients, to upper bit planes, stuffs “0”s in blank fields outside the ROI, which are generated by the bit shift process, and stuffs audio data from an audio buffer in blank fields within the ROI, which are generated by the bit shift process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.