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    Method and apparatus for encoding and decoding image by using large transformation unit
    67.
    发明授权
    Method and apparatus for encoding and decoding image by using large transformation unit 有权
    通过使用大变换单元对图像进行编码和解码的方法和装置

    公开(公告)号：US08971650B2

    公开(公告)日：2015-03-03

    申请号：US14299155

    申请日：2014-06-09

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Tammy Lee ,  Woo-jin Han ,  Jianle Chen ,  Hae-kyung Jung

    IPC: G06K9/36 ,  G06T9/00 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61 ,  H04N19/107 ,  H04N19/70 ,  H04N19/96

    CPC classification number: H04N19/625 ,  G06T9/00 ,  H04N19/107 ,  H04N19/119 ,  H04N19/122 ,  H04N19/169 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

    Abstract: An image decoding method including determining coding units having a hierarchical structure for decoding an image using split information of a coding unit, determining at least one prediction unit for predicting a coding unit among the coding units using information about a partition type, and determining at least one transformation unit for inversely transforming the coding unit using information about a depth of the at least one transformation unit, wherein the split information of a coding unit, the information about a partition type and the information about a depth of the at least one transformation unit are parsed from a bitstream, parsing from the bitstream transformation coefficients generated by transformation according to the at least one transformation unit generated by dividing the coding unit, and reconstructing residual of the at least one transformation unit by performing inverse quantization, and inverse transformation on the parsed transformation coefficients, and performing intra prediction or inter prediction on the prediction unit to generate a predictor, and reconstructing the image based on the residual and the predictor.

    Abstract translation: 一种图像解码方法，包括确定具有用于使用编码单元的分割信息对图像进行解码的分层结构的编码单元，使用关于分割类型的信息确定用于预测编码单元中的编码单位的至少一个预测单元，以及至少确定 一个变换单元，用于使用关于所述至少一个变换单元的深度的信息对所述编码单元进行逆变换，其中编码单元的分割信息，关于分区类型的信息以及关于所述至少一个变换单元的深度的信息 从比特流解析，根据通过对编码单位进行分割而生成的至少一个变换单位的变换生成的比特变换系数进行解析，并且通过执行逆量化来重构至少一个变换单元的残差，以及对 解析变换系数，和perf 在所述预测单元上建立帧内预测或帧间预测以生成预测器，以及基于所述残差和所述预测器来重构所述图像。

    Method and apparatus for encoding and decoding image by using large transform unit
    69.
    发明授权
    Method and apparatus for encoding and decoding image by using large transform unit 有权
    通过使用大型变换单元对图像进行编码和解码的方法和装置

    公开(公告)号：US08885959B2

    公开(公告)日：2014-11-11

    申请号：US14299406

    申请日：2014-06-09

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Min-su Cheon ,  Woo-jin Han ,  Hae-kyung Jung ,  Il-koo Kim ,  Tammy Lee ,  Jianle Chen

    IPC: G06K9/36 ,  G06T9/00

    CPC classification number: H04N19/122 ,  G06T9/00 ,  H04N19/107 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/30 ,  H04N19/50 ,  H04N19/503 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91 ,  H04N19/96

    Abstract: A method of decoding an image includes performing entropy-decoding to obtain quantized transformation coefficients of at least one transformation unit in a coding unit of the image, determining a prediction mode of at least one prediction unit in the coding unit from information indicating a prediction mode for the at least one prediction unit, when the prediction mode is determined to be an inter prediction mode, not in an intra prediction mode, determining a size of the at least one transformation unit in the coding unit regardless of a size of the at least one prediction unit in the coding unit, performing inverse-quantization and inverse-transformation on the quantized transformation coefficients of the at least one transformation unit to obtain residuals, and performing inter prediction for at least one prediction unit in the coding unit to generate a predictor and restoring the image by using the residuals and the predictor.

    Abstract translation: 解码图像的方法包括执行熵解码以获得图像的编码单元中的至少一个变换单元的量化变换系数，从表示预测模式的信息确定编码单元中的至少一个预测单元的预测模式 对于所述至少一个预测单元，当所述预测模式被确定为帧间预测模式时，不是在帧内预测模式中，确定所述编码单元中的所述至少一个变换单元的大小，而与所述至少一个预测模式的大小无关 编码单元中的一个预测单元，对所述至少一个变换单元的量化变换系数进行逆量化和逆变换以获得残差，并且对所述编码单元中的至少一个预测单元执行帧间预测，以生成预测器 并使用残差和预测器恢复图像。

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