发明名称 |
Apparatus and method of embedded quantization for the improved SNR scalbility |
摘要 |
Provided are a method and apparatus for enhancing coding efficiency by performing encoding and decoding by optimally calculating quantization intervals and reconstruction values through a distribution of DCT coefficients of each frame, when DCT coefficients of each SNR enhancement layer are quantized in scalable video coding. The encoding apparatus includes: an R-D optimization unit performing Rate-Distortion (R-D) optimization based on a distribution of Discrete Cosine Transform (DCT) coefficients each slice and calculating a first reference value and a second reference value respectively indicating a start point and an end point of DCT coefficients quantized to "0"; a quantization interval setting unit setting adaptive quantization intervals on the basis of a minimum value and a maximum value of the DCT coefficients, the first reference value, and the second reference value; and a mapping unit mapping the DCT coefficients to the adaptive quantization intervals.
|
申请公布号 |
US8428380(B2) |
申请公布日期 |
2013.04.23 |
申请号 |
US20060996099 |
申请日期 |
2006.07.19 |
申请人 |
CHOI HAE CHUL;KIM JAE GON;HONG JIN WOO;KO SUNG-JEA;ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
CHOI HAE CHUL;KIM JAE GON;HONG JIN WOO;KO SUNG-JEA |
分类号 |
G06K9/36 |
主分类号 |
G06K9/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|