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    • 2. 发明申请
    • MOTION PICTURE ENCODING/DECODING APPARATUS, ADAPTIVE DEBLOCKING FILTERING APPARATUS AND FILTERING METHOD FOR SAME, AND RECORDING MEDIUM
    • 运动图像编码/解码装置,自适应解锁滤波装置和滤波方法及记录介质
    • US20110200100A1
    • 2011-08-18
    • US13126144
    • 2009-10-22
    • Hayoon KimYungho ChoiYoonsik ChoeYonggoo KimByongho KimJunhyuk Ahn
    • Hayoon KimYungho ChoiYoonsik ChoeYonggoo KimByongho KimJunhyuk Ahn
    • H04N7/12
    • H04N19/86H04N19/117H04N19/14H04N19/176H04N19/61H04N19/82
    • A video encoding/decoding apparatus, an adaptive deblocking filtering apparatus and a filtering method for same, and a recording medium are disclosed. The filtering apparatus includes: a boundary strength determiner for determining strength of boundaries between subblocks of current block; a direction selector for selecting multiple directions preset with reference to the boundary sequentially; a filtering pixel selector for selecting pixels for filtering based on selected directions; a filtering determiner for determining whether to perform the filtering for the selected directions depending on relationships between pixel values of selected pixels; and a filtering unit for filtering the selected pixels in the selected directions depending on the determination of whether to perform filtering to apply pixel-wide deblocking filtering in a plurality of directions as well as in vertical and horizontal directions, thus effectively removing block distortions resulting from a diagonal discontinuity caused byedges in a plurality of diagonal directions.
    • 公开了一种视频编码/解码装置,自适应去块滤波装置及其滤波方法及记录介质。 滤波装置包括:边界强度确定器,用于确定当前块的子块之间的边界的强度; 方向选择器,用于选择参考边界预先设定的多个方向; 滤波像素选择器,用于基于所选择的方向选择用于滤波的像素; 滤波确定器,用于根据所选择的像素的像素值之间的关系确定是否对所选择的方向进行滤波; 以及滤波单元,用于根据是否执行滤波以在多个方向以及垂直和水平方向上进行像素宽度去块滤波的确定来对所选择的方向中的所选像素进行滤波,从而有效地去除由 在多个对角线方向上产生的对角不连续性。
    • 6. 发明申请
    • WAVELET TRANSFORM APPARATUS AND METHOD BASED ON PREDICTION-UPDATE LIFTING SCHEME, AND ADAPTIVE PREDICTION APPARATUS AND METHOD AND RECORDING MEDIUM FOR THE SAME
    • 基于预测更新提升方案的小波变换装置和方法及其自适应预测装置及其相关方法和记录介质
    • US20110182358A1
    • 2011-07-28
    • US13055671
    • 2009-07-16
    • Hayoon KimYoonsik ChoeYonggoo KimYungho ChoiJinwoo JungByongho Kim
    • Hayoon KimYoonsik ChoeYonggoo KimYungho ChoiJinwoo JungByongho Kim
    • H04N11/02
    • H04N19/635
    • The present disclosure relates to a wavelet transform apparatus and method based on a prediction-update lifting scheme, and an adaptive prediction apparatus and method and a recording medium for the same. The disclosure comprises the steps of: setting first updated even polyphase samples influenced when being updated from corresponding odd polyphase samples, setting plural candidate groups for prediction direction based on the set first updated even polyphase samples, selecting a first prediction direction from the candidate groups to minimize the energy in a high band, obtaining a first prediction value based on the first prediction direction and the updated even polyphase samples corresponding to the first prediction direction, and obtaining residual odd polyphase samples by deducting the first prediction value from the corresponding odd polyphase samples. Therefore, the present disclosure is able to increase encoding efficiency by minimizing energy transfer to a high band signal when removing the spatial correlation within an image using a directional wavelet transform designed based on the prediction-update lifting scheme.
    • 本发明涉及一种基于预测更新提升方案的小波变换装置和方法,以及用于其的自适应预测装置和方法以及记录介质。 本公开包括以下步骤:设置当从相应的奇数多相样本更新时受影响的第一更新均匀多相样本,基于所设置的第一更新均匀多相样本设置用于预测方向的多个候选组,从候选组中选择第一预测方向 使高频段的能量最小化,根据与第一预测方向对应的第一预测方向和更新的均匀多相采样获得第一预测值,并通过从相应的奇数多相样本中减去第一预测值来获得残差奇数多相样本 。 因此,本公开能够通过使用基于预测更新提升方案设计的定向小波变换去除图像内的空间相关性来最小化对高频带信号的能量传递的编码效率。
    • 8. 发明授权
    • Wavelet transform apparatus and method based on prediction-update lifting scheme, and adaptive prediction apparatus and method and recording medium for the same
    • 基于预测更新提升方案的小波变换装置及方法,以及自适应预测装置及方法及其记录介质
    • US08559509B2
    • 2013-10-15
    • US13055671
    • 2009-07-16
    • Hayoon KimYoonsik ChoeYonggoo KimYungho ChoiJinwoo JungByongho Kim
    • Hayoon KimYoonsik ChoeYonggoo KimYungho ChoiJinwoo JungByongho Kim
    • H04B1/66
    • H04N19/635
    • The present disclosure relates to a wavelet transform apparatus and method based on a prediction-update lifting scheme, and an adaptive prediction apparatus and method and a recording medium for the same. The disclosure comprises the steps of: setting first updated even polyphase samples influenced when being updated from corresponding odd polyphase samples, setting plural candidate groups for prediction direction based on the set first updated even polyphase samples, selecting a first prediction direction from the candidate groups to minimize the energy in a high band, obtaining a first prediction value based on the first prediction direction and the updated even polyphase samples corresponding to the first prediction direction, and obtaining residual odd polyphase samples by deducting the first prediction value from the corresponding odd polyphase samples. Therefore, the present disclosure is able to increase encoding efficiency by minimizing energy transfer to a high band signal when removing the spatial correlation within an image using a directional wavelet transform designed based on the prediction-update lifting scheme.
    • 本发明涉及一种基于预测更新提升方案的小波变换装置和方法,以及用于其的自适应预测装置和方法以及记录介质。 本公开包括以下步骤:设置当从相应的奇数多相样本更新时受影响的第一更新均匀多相样本,基于所设置的第一更新均匀多相样本设置用于预测方向的多个候选组,从候选组中选择第一预测方向 使高频段的能量最小化,根据与第一预测方向对应的第一预测方向和更新的均匀多相采样获得第一预测值,并通过从相应的奇数多相样本中减去第一预测值来获得残差奇数多相样本 。 因此,本公开能够通过使用基于预测更新提升方案设计的定向小波变换去除图像内的空间相关性来最小化对高频带信号的能量传递的编码效率。
    • 9. 发明申请
    • VIDEO ENCODING/DECODING APPARATUS AND ADAPTIVE OVERLAPPED BLOCK MOTION COMPENSATION METHOD AND APPARATUS EMPLOYING ADAPTIVE WEIGHTS THEREFOR
    • 视频编码/解码装置和自适应叠加运动补偿方法和装置采用自适应权重
    • US20110200098A1
    • 2011-08-18
    • US13125254
    • 2009-10-14
    • Hayoon KimYonggoo KimYoonsik ChoeYungho Choi
    • Hayoon KimYonggoo KimYoonsik ChoeYungho Choi
    • H04N7/26
    • H04N19/567H04N19/583
    • The present disclosure provides an adaptive overlapped block motion compensation apparatus employing adaptive weights including: an RBMC(x,y) calculator for calculating residual signal RBMC(x,y) in block motion estimation; a DN(x,y) calculator for calculating differential pixel value DN(x,y) between a motion compensated block generated by a motion vector of an adjacent block and a currently motion compensated block; a unit for updating and setting additional information for performing an adaptive overlapped block motion compensation based on RBMC(x,y) and DN(x,y); and an adaptive overlapped block motion compensation operating on respective pixels in certain pixel units based on the additional information, progressing to subsequent pixels if an absolute value of RBMC(x,y) is not greater than the additional information, and if the absolute value of RBMC(x,y) is greater than the additional information, calculating an ROBmc(x,y) with an HN(x,y) selectively signed so that an absolute value of ROBMC(x,y) is smaller than the absolute value of RBMC(x,y).
    • 本公开提供一种采用自适应权重的自适应重叠块运动补偿装置,包括:用于在块运动估计中计算残差信号RBMC(x,y)的RBMC(x,y)计算器; 用于计算由相邻块的运动矢量生成的运动补偿块和当前运动补偿块之间的差分像素值DN(x,y)的DN(x,y)计算器; 用于更新和设置用于基于RBMC(x,y)和DN(x,y)执行自适应重叠块运动补偿的附加信息的单元; 以及基于附加信息在某些像素单元中对各个像素进行自适应重叠块运动补偿,如果RBMC(x,y)的绝对值不大于附加信息,则前进到后续像素,并且如果绝对值 RBMC(x,y)大于附加信息,计算具有选择性符号的HN(x,y)的ROBmc(x,y),使得ROBMC(x,y)的绝对值小于 RBMC(x,y)。
    • 10. 发明授权
    • Encoding method and encoding apparatus for B-transform, and encoded data for same
    • 用于B变换的编码方法和编码装置,以及用于其的编码数据
    • US08462023B2
    • 2013-06-11
    • US13063784
    • 2009-09-09
    • Hayoon KimYoonsik ChoeYonggoo KimYungho ChoiSungjei KimJinwoo Jung
    • Hayoon KimYoonsik ChoeYonggoo KimYungho ChoiSungjei KimJinwoo Jung
    • H03M7/00
    • H03M7/30
    • An encoding method and encoding apparatus for B-transform, and encoded data for same are provided. The apparatus is for encoding input data and includes: a B-transform unit for performing a B-transform on the input data to generate a binary expression; and an encoder for removing one or more binary symbols from the binary expression and scanning the binary expression with the one or more binary symbols removed to generate a bitstream. According to the method and apparatus, it is possible to encode uniform distribution data efficiently, and using the B-transform by its characteristics for reducing the bit number in the generation of the binary expressions from the B-transform operation on the uniform distribution data enhances the data compression performance.
    • 提供了一种用于B变换的编码方法和编码装置,以及用于其的编码数据。 该装置用于编码输入数据,并包括:B变换单元,用于对输入数据执行B变换以产生二进制表达式; 以及用于从二进制表达式中去除一个或多个二进制符号并且用去除了一个或多个二进制符号扫描二进制表达式以生成比特流的编码器。 根据该方法和装置,可以有效地对均匀分布数据进行编码,并且通过其特性来使用B变换来减少在均匀分布数据上从B变换操作生成二进制表达式中的位数增强 数据压缩性能。