Video decoding device and method using inverse quantization
US10284859B2 · kind B2 · utility
2Cited by
2References
3Claims
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Key dates
| Filing date | Mar 8, 2012 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jul 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/593
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a video encoding device capable of changing a quantization step size frequently while reducing an increase in code rate to enable high-quality moving image encoding, comprising a quantization step size encoding unit 10 for encoding a quantization step size that controls the granularity of quantization, the quantization step size encoding unit 10 includes a step size prediction unit 11 for predicting the quantization step size that controls the granularity of the quantization by using a quantization step size assigned to a neighboring image block already encoded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.