发明名称 |
IMAGING DECODING APPARATUS |
摘要 |
An image decoding device is provided which includes an intra prediction module for reconstructing an intra prediction mode and creating a prediction block of a current block or a sub block, an inverse scanning module for converting residual signals into a quantization block, an inverse quantization module for inversely quantizing the quantization block, and an inverse transform module for inversely-transforming the inversely-quantized block. A quantization parameter predictor for deriving the quantization parameter is created using quantization parameters of a left coding unit and a top coding unit of a current coding unit. Therefore, it is possible to improve image quality by adaptively adjusting a quantization parameter of a current block depending on the size of a coding unit and enhance compression efficiency of an image by effectively encoding/decoding the quantization parameter to reduce the number of bits required for transmitting the quantization parameter. |
申请公布号 |
US2014219339(A1) |
申请公布日期 |
2014.08.07 |
申请号 |
US201214124576 |
申请日期 |
2012.04.20 |
申请人 |
Park Shin Ji |
发明人 |
Park Shin Ji |
分类号 |
H04N19/126;H04N19/60;H04N19/593 |
主分类号 |
H04N19/126 |
代理机构 |
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代理人 |
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主权项 |
1. An image decoding device comprising:
an intra prediction module for reconstructing an intra prediction mode and creating a prediction block of a current block or a sub block of the current block; an inverse scanning module for converting residual signals into a two-dimensional quantization block; an inverse quantization module for inversely quantizing the quantization block using the quantization parameter; and an inverse transform module for inversely-transforming the inversely-quantized block, wherein a quantization parameter predictor used for deriving the quantization parameter is created using a quantization parameter of a left coding unit of a current coding unit and a quantization parameter of a top coding unit of the current coding unit. |
地址 |
Seoul KR |