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    • 7. 发明申请
    • Motion compensation method
    • 运动补偿方法
    • US20070133687A1
    • 2007-06-14
    • US10590524
    • 2005-07-06
    • Steffen WittmannThomas WediSatoshi Kondo
    • Steffen WittmannThomas WediSatoshi Kondo
    • H04N11/04H04N7/12
    • H04N19/523
    • A motion compensation method for achieving the reduction of operation workload and the simplification of a hardware configuration includes: interpolation having (i) a first calculation step (S100) of calculating base values of sub-pixel values by multiplying coefficients with pixel values of pixels included in a reference picture and (ii) a first rounding step (S102) of deriving sub-pixel values of sub-pixels by rounding the base values calculated in the first calculation step (S100) in stead of directly using the base values in calculating other sub-pixel values; and motion compensation (S110) of the reference picture that has interpolated sub-pixels with the derived sub-pixel values.
    • 用于实现操作工作量的减少和简化硬件配置的运动补偿方法包括:内插,其具有:(i)通过将系数与像素的像素值相乘来计算子像素值的基值的第一计算步骤(S100) 包括在参考图像中;以及(ii)第一舍入步骤(S102),通过对在第一计算步骤(S100)中计算出的基值进行舍入来代替直接使用基本值来取得子像素的子像素值 在计算其他子像素值时; 以及具有经推导的子像素值的内插子像素的参考图像的运动补偿(S110)。
    • 8. 发明授权
    • Video encoding method, and video decoding method
    • 视频编码方法和视频解码方法
    • US08681872B2
    • 2014-03-25
    • US13429538
    • 2012-03-26
    • Hisao SasaiSatoshi Kondo
    • Hisao SasaiSatoshi Kondo
    • H04N11/04
    • H04N19/59H04N19/33H04N19/46H04N19/467H04N19/48H04N19/50H04N19/60H04N19/80
    • Provided is a video coding method and a video decoding method increasing the resolution and quality of images while suppressing an amount of data required for increasing the resolution. A video coding apparatus includes a first orthogonal transformation unit performing discrete cosine transform on an input picture signal, a low-pass filter performing low-pass filtering on the input picture signal, a downsampling unit downsampling the resolution of a low-frequency image signal, a coding unit compressing and coding a reduced image signal, a local decoding unit decoding a coded bit stream, a second orthogonal transformation unit performing discrete cosine transform on a decoded image signal, and a modification information generation unit generating, based on input image DCT coefficients and decoded image DCT coefficients, coefficient modification information used for modifying orthogonal transformation coefficients obtained by performing orthogonal transformation on a decoded video signal obtained from a coded bit stream.
    • 提供了一种在抑制提高分辨率所需的数据量的同时增加图像的分辨率和质量的视频编码方法和视频解码方法。 视频编码装置包括对输入图像信号进行离散余弦变换的第一正交变换单元,对输入图像信号进行低通滤波的低通滤波器,对低频图像信号的分辨率进行下采样的下采样单元, 压缩编码缩小图像信号的编码单元,对编码比特流进行解码的局部解码单元,对解码图像信号进行离散余弦变换的第二正交变换单元,以及修改信息生成单元,基于输入图像DCT系数 和解码图像DCT系数,用于修改通过对从编码比特流获得的解码视频信号执行正交变换而获得的正交变换系数的系数修改信息。
    • 9. 发明授权
    • Video encoding method, and video decoding method
    • 视频编码方法和视频解码方法
    • US08165212B2
    • 2012-04-24
    • US11667694
    • 2005-11-14
    • Hisao SasaiSatoshi Kondo
    • Hisao SasaiSatoshi Kondo
    • H04N11/02
    • H04N19/59H04N19/33H04N19/46H04N19/467H04N19/48H04N19/50H04N19/60H04N19/80
    • Provided is a video coding method and a video decoding method increasing the resolution and quality of images while suppressing an amount of data required for increasing the resolution. A video coding apparatus includes a first orthogonal transformation unit performing discrete cosine transform on an input picture signal, a low-pass filter performing low-pass filtering on the input picture signal, a downsampling unit downsampling the resolution of a low-frequency image signal, a coding unit compressing and coding a reduced image signal, a local decoding unit decoding a coded bit stream, a second orthogonal transformation unit performing discrete cosine transform on a decoded image signal, and a modification information generation unit generating, based on input image DCT coefficients and decoded image DCT coefficients, coefficient modification information used for modifying orthogonal transformation coefficients obtained by performing orthogonal transformation on a decoded video signal obtained from a coded bit stream.
    • 提供了一种在抑制提高分辨率所需的数据量的同时增加图像的分辨率和质量的视频编码方法和视频解码方法。 视频编码装置包括对输入图像信号进行离散余弦变换的第一正交变换单元,对输入图像信号进行低通滤波的低通滤波器,对低频图像信号的分辨率进行下采样的下采样单元, 压缩编码缩小图像信号的编码单元,对编码比特流进行解码的局部解码单元,对解码图像信号进行离散余弦变换的第二正交变换单元,以及修改信息生成单元,基于输入图像DCT系数 和解码图像DCT系数,用于修改通过对从编码比特流获得的解码视频信号执行正交变换而获得的正交变换系数的系数修改信息。
    • 10. 发明申请
    • Video Encoding Method, and Video Decoding Method
    • 视频编码方法和视频解码方法
    • US20080043835A1
    • 2008-02-21
    • US11667694
    • 2005-11-14
    • Hisao SasaiSatoshi Kondo
    • Hisao SasaiSatoshi Kondo
    • H04N7/12
    • H04N19/59H04N19/33H04N19/46H04N19/467H04N19/48H04N19/50H04N19/60H04N19/80
    • Provided is a video coding method and a video decoding method capable of increasing the resolution and quality of images while suppressing an amount of data required for increasing the resolution. A video coding apparatus (100) includes: a first orthogonal transformation unit (102) which performs discrete cosine transform on an input picture signal (101); a low-pass filter (116) which performs low-pass filtering on the input picture signal (101); a downsampling unit (108) which downsamples the resolution of a low-frequency image signal (117); a coding unit (110) which compresses and codes a reduced image signal (109); a local decoding unit (112) which decodes a coded bit stream (111); a second orthogonal transformation unit (114) which performs discrete cosine transform on a decoded image signal (113); and a modification information generation unit (104) which generates, based on input image DCT coefficients (103) and decoded image DCT coefficients (115), coefficient modification information (105) used for modifying orthogonal transformation coefficients obtained by performing orthogonal transformation on a decoded video signal obtained from a coded bit stream.
    • 提供了一种能够在抑制增加分辨率所需的数据量的同时提高图像的分辨率和质量的视频编码方法和视频解码方法。 视频编码装置(100)包括:对输入图像信号(101)进行离散余弦变换的第一正交变换单元(102); 对所述输入图像信号(101)进行低通滤波的低通滤波器(116); 下采样单元(108),其对低频图像信号(117)的分辨率进行下采样; 编码单元,其对压缩图像信号进行压缩编码; 对编码比特流(111)进行解码的本地解码单元(112); 对解码图像信号进行离散余弦变换的第二正交变换单元(114); 以及修改信息生成单元,其根据输入图像DCT系数(103)和解码图像DCT系数(115)生成用于修正通过对解码后的图像进行正交变换而获得的正交变换系数的系数修正信息(105) 从编码比特流获得的视频信号。