영상의 역양자화 방법 및 장치, 복호화 방법 및 장치
    2.
    发明公开
    영상의 역양자화 방법 및 장치, 복호화 방법 및 장치 有权
    用于逆向量化的方法和装置,以及用于解码图像的方法和装置

    公开(公告)号:KR1020100026779A

    公开(公告)日:2010-03-10

    申请号:KR1020080085915

    申请日:2008-09-01

    Abstract: PURPOSE: An inverse quantization method of images, an inverse quantization device thereof, a decoding method, and a decoding device thereof are provided to reduce quantization errors which is the differences between values recovered through inverse quantization and original values. CONSTITUTION: An inverse quantization method of images comprises the following steps: a step of extracting a quantization coefficient generated by quantizing a conversion coefficient from encoded bit streams; a step of deciding quantization step revision value for reducing quantization errors; a step of performing inverse quantization using a second quantization step value generated by a first quantization step value for inverse quantization of the quantization coefficient.

    Abstract translation: 目的:提供一种图像的逆量化方法,其逆量化装置,解码方法及其解码装置,以减少量化误差,这是通过逆量化和原始值恢复的值之间的差异。 构成:图像的逆量化方法包括以下步骤:提取通过从编码比特流量化转换系数而产生的量化系数的步骤; 确定用于减少量化误差的量化步长修正值的步骤; 使用由第一量化步长值生成的用于量化系数的逆量化的第二量化步长值进行逆量化的步骤。

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