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    다수의 기본 블록들을 이용한 다차원 변환 및 양자화 방법,그리고 그 장치
    8.
    发明公开
    다수의 기본 블록들을 이용한 다차원 변환 및 양자화 방법,그리고 그 장치 失效
    用于基于整数的多维变换和使用多个单元块的量化的方法和装置

    公开(公告)号：KR1020090090246A

    公开(公告)日：2009-08-25

    申请号：KR1020080057067

    申请日：2008-06-17

    Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단

    Inventor： 정세윤 ,  김동형 ,  최진수 ,  정원식 ,  문경애 ,  홍진우 ,  안창범 ,  오승준 ,  심동규 ,  박호종 ,  전수열 ,  최우진

    IPC: H04N19/176 ,  H04N19/124

    CPC classification number: H04N19/176 ,  H04N19/124 ,  H04N19/625

    Abstract: A multi-dimensional transform and quantization method and an apparatus thereof by using fundamental blocks and reducing the complexity are provided to improve the performance of video data compression by performing the conversion by collecting conversion coefficients. A converting unit(210) performs first conversion about inputted video data. The converting unit extracts the conversion factors of the same frequency from video data. The converting unit performs the second conversion about the extracted conversion factors. A quantizing unit(230) quantizes conversion factors transformed from the second to the fixed numbers. A scale unit(220) produces the first scale factor of video data in the first conversion and the second scale factor of video data in the second conversion.

    Abstract translation: 提供了通过使用基本块并降低复杂度的多维变换和量化方法及其装置，以通过收集转换系数执行转换来提高视频数据压缩的性能。 A转换单元（210）对输入的视频数据执行第一转换。 转换单元从视频数据中提取相同频率的转换因子。 转换单元对所提取的转换因子执行第二转换。 量化单元（230）对从第二固定数字变换的转换因子进行量化。 缩放单元（220）在第一转换中产生视频数据的第一比例因子和第二转换中的视频数据的第二比例因子。

    잔여계수의 상관성에 따라 변환기를 선택적으로 이용한부호화/복호화 장치 및 그 방법
    10.
    发明公开
    잔여계수의 상관성에 따라 변환기를 선택적으로 이용한부호화/복호화 장치 및 그 방법 有权
    使用替代转换器根据残留信号的关联编码和解码的装置和方法

    公开(公告)号：KR1020080026463A

    公开(公告)日：2008-03-25

    申请号：KR1020070036089

    申请日：2007-04-12

    Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단 ,  세종대학교산학협력단

    Inventor： 김대연 ,  임성창 ,  서정일 ,  백승권 ,  장인선 ,  장대영 ,  김재곤 ,  문경애 ,  홍진우 ,  김진웅 ,  오승준 ,  안창범 ,  정세윤 ,  최해철 ,  이영렬 ,  심동규

    IPC: H04N19/12 ,  H04N19/625

    CPC classification number: H04N19/103 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

    Abstract: An apparatus for encoding and decoding by using a converter alternatively according to the correlation of residual coefficients and a method thereof are provided to select a converter with a highest compression rate by perform an RD(Rate-Distortion) cost optimization using DCT(Discrete Cosine Transform) and DST(Discrete Sine Transform) in generating a quantized conversion coefficient through converters and quantizers after prediction between images or within the images in a predetermined size of block, thereby improving the compression rate of an image block. A first converter(31-34) performs the DCT(Discrete Cosine Transform) in a block unit, first quantization, first inverse quantization and IDCT(Interger-approximated Discrete Cosine Inverse Transform) of residual coefficients which are generated after performing prediction between images or within the images. A second converter(35-38) performs the DST(Discrete Sine Transform) in the block unit, second quantization, second inverse quantization, and IDST(Interger-approximated Discrete Sine Inverse Transform) of the residual coefficients. A selection unit(39) performs RD Cost(Rate-Distortion Cost) to select a converter with a high compression rate by block, and a display unit(40) displays converter information selected by the selection unit on a corresponding flag bit in a macro block unit.

    Abstract translation: 提供了根据剩余系数的相关性或其方法替代地使用转换器进行编码和解码的装置，以通过使用DCT（离散余弦变换）进行RD（速率 - 失真）成本优化来选择具有最高压缩率的转换器 ）和DST（离散正弦变换）中，通过转换器和量化器在预测图像之后或在预定大小的块内的图像内生成量化转换系数，从而提高图像块的压缩率。 第一转换器（31-34）以块单位进行DCT（离散余弦变换），在执行图像之间的预测之后产生的剩余系数的第一量化，第一逆量化和IDCT（Interger近似离散余弦逆变换） 在图像内。 第二转换器（35-38）以剩余系数的块单位，第二量化，第二逆量化和IDST（Interger-Neared离散正弦逆变换）执行DST（离散正弦变换）。 选择单元（39）执行RD成本（速率失真成本），以块的方式选择具有高压缩率的转换器，并且显示单元（40）将由选择单元选择的转换器信息显示在宏中的相应标志位上 块单位。

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