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    • 1. 发明申请
    • Method and apparatus for generating motion vector in hierarchical motion estimation
    • 用于在分层运动估计中产生运动矢量的方法和装置
    • US20050249284A1
    • 2005-11-10
    • US11091954
    • 2005-03-29
    • Jae-hun LeeNam-suk Lee
    • Jae-hun LeeNam-suk Lee
    • H04N7/32G06T7/20H04N7/12H04N7/26
    • H04N19/53G06T7/207H04N19/56
    • A method and apparatus is provided for generating a middle level motion vector in hierarchical motion estimation. TA second-resolution-frame motion vector is generated in a second resolution frame having a second resolution from a first-resolution-frame motion vector in a first resolution frame having a first resolution, the second resolution being higher than the first resolution. A local-search reference point is determined in the second-resolution frame based on the first-resolution-frame motion vector, and the second-resolution-frame motion vector is generated by performing a local search process on the second resolution frame based on the determined local-search reference point. The local search process is performed based on matching reference values for lower estimation blocks, each of the lower estimation blocks comprise pixel values of some portions of a current estimation block and a past estimation block. The current estimation block is an estimation block of a current frame and the past estimation block is an estimation block of a corresponding past frame. Accordingly, an amount of operations for the matching reference values can be reduced.
    • 提供了一种用于在分层运动估计中产生中间级运动矢量的方法和装置。 在具有第一分辨率的第一分辨率帧中的第一分辨率帧运动矢量具有第二分辨率的第二分辨率帧中产生TA第二分辨率帧运动矢量,第二分辨率高于第一分辨率。 基于第一分辨率帧运动矢量在第二分辨率帧中确定局部搜索参考点,并且基于第二分辨率帧运动矢量对第二分辨率帧执行本地搜索处理来生成第二分辨率帧运动矢量 确定的本地搜索参考点。 基于对于较低估计块的匹配参考值执行本地搜索处理,每个较低估计块包括当前估计块的一些部分的像素值和过去的估计块。 当前估计块是当前帧的估计块,而过去的估计块是对应的过去帧的估计块。 因此,可以减少用于匹配参考值的操作量。
    • 2. 发明申请
    • Prediction method, apparatus, and medium for video encoder
    • 视频编码器的预测方法,装置和介质
    • US20050069211A1
    • 2005-03-31
    • US10855343
    • 2004-05-28
    • Jae-hun LeeNam-suk Lee
    • Jae-hun LeeNam-suk Lee
    • H04N7/32G06K9/36G06K9/46H04N7/26H04N7/50
    • H04N19/107H04N19/149H04N19/172H04N19/61
    • A prediction method, apparatus, and medium including computer readable code, for calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using an intra-prediction and/or inter-prediction in consideration of a type of the received picture, calculating a threshold value using the calculated average of intra-predication costs and/or inter-predication costs, and determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value. Accordingly, it is possible to considerably reduce the amount of computation that conventionally was required to encode a picture, without any deterioration in the encoding performance, by considerably reducing the number of macroblocks that need to undergo intra-prediction.
    • 一种包括计算机可读代码的预测方法,装置和介质,用于通过使用帧内预测和/或帧内编码来计算接收图像的宏块的帧内预测成本的平均值或帧间预测成本的平均值 - 考虑到所接收的图像的类型的预测,使用所计算的预测内成本和/或预估成本的平均值来计算阈值,以及基于所计算的阈值来确定是否对后续图像执行帧内预测 值。 因此,通过显着减少需要进行帧内预测的宏块的数量,可以显着地减少编码图像所需的计算量,而不会使编码性能下降。
    • 3. 发明授权
    • Prediction method, apparatus, and medium for video encoder
    • 视频编码器的预测方法,装置和介质
    • US07532764B2
    • 2009-05-12
    • US10855343
    • 2004-05-28
    • Jae-hun LeeNam-suk Lee
    • Jae-hun LeeNam-suk Lee
    • G06K9/46H04N7/12
    • H04N19/107H04N19/149H04N19/172H04N19/61
    • A prediction method, apparatus, and medium including computer readable code, for calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using an intra-prediction and/or inter-prediction in consideration of a type of the received picture, calculating a threshold value using the calculated average of intra-predication costs and/or inter-predication costs, and determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value. Accordingly, it is possible to considerably reduce the amount of computation that conventionally was required to encode a picture, without any deterioration in the encoding performance, by considerably reducing the number of macroblocks that need to undergo intra-prediction.
    • 一种包括计算机可读代码的预测方法,装置和介质,用于通过使用帧内预测和/或帧内编码来计算接收图像的宏块的帧内预测成本的平均值或帧间预测成本的平均值 - 考虑到所接收的图像的类型的预测,使用所计算的预测内成本和/或预估成本的平均值来计算阈值,以及基于所计算的阈值来确定是否对后续图像执行帧内预测 值。 因此,通过显着减少需要进行帧内预测的宏块的数量,可以显着地减少编码图像所需的计算量,而不会使编码性能下降。
    • 4. 发明申请
    • Method and apparatus for sub-pixel motion estimation which reduces bit precision
    • 用于子像素运动估计的方法和装置,其降低位精度
    • US20050276330A1
    • 2005-12-15
    • US11083986
    • 2005-03-21
    • Chan-sik ParkJae-hun LeeNam-suk Lee
    • Chan-sik ParkJae-hun LeeNam-suk Lee
    • H04N7/32H04N7/12H04N7/26H04N7/30
    • H04N19/523H04N19/184H04N19/51
    • A method and apparatus are provided for sub-pixel motion estimation which performs sub-pixel motion estimation in which the precision of a difference between a pixel value of a block to be searched and a pixel value of a block of a search area, i.e., the number of bits of the difference, is reduced. The method for sub-pixel motion estimation in inter-prediction includes (a) determining one integer pixel corresponding to an estimated block by performing integer-pixel motion estimation, (b) receiving a value of a sub-pixel that is adjacent to the determined integer pixel and a value of an integer pixel of a block to be searched, (c) reducing a difference between the value of the sub-pixel and the value of the integer pixel and reducing a bit precision of the difference, and (d) calculating a similarity using the difference whose bit precision is reduced.
    • 提供了一种用于子像素运动估计的方法和装置,其执行子像素运动估计,其中要搜索的块的像素值与搜索区域的块的像素值之间的差的精度,即, 差的位数减少。 帧间预测中的子像素运动估计方法包括:(a)通过执行整数像素运动估计来确定与估计块对应的一个整数像素,(b)接收与所确定的子像素相邻的子像素的值 整数像素和要搜索的块的整数像素的值,(c)减小子像素的值和整数像素的值之间的差并减小差的位精度,以及(d) 使用比特精度降低的差异来计算相似度。
    • 6. 发明授权
    • Method and apparatus for generating motion vector in hierarchical motion estimation
    • 用于在分层运动估计中产生运动矢量的方法和装置
    • US08130835B2
    • 2012-03-06
    • US11091954
    • 2005-03-29
    • Jae-hun LeeNam-suk Lee
    • Jae-hun LeeNam-suk Lee
    • H04N7/12H04N11/02
    • H04N19/53G06T7/207H04N19/56
    • A method and apparatus is provided for generating a middle level motion vector in hierarchical motion estimation. TA second-resolution-frame motion vector is generated in a second resolution frame having a second resolution from a first-resolution-frame motion vector in a first resolution frame having a first resolution, the second resolution being higher than the first resolution. A local-search reference point is determined in the second-resolution frame based on the first-resolution-frame motion vector, and the second-resolution-frame motion vector is generated by performing a local search process on the second resolution frame based on the determined local-search reference point. The local search process is performed based on matching reference values for lower estimation blocks, each of the lower estimation blocks comprise pixel values of some portions of a current estimation block and a past estimation block. The current estimation block is an estimation block of a current frame and the past estimation block is an estimation block of a corresponding past frame. Accordingly, an amount of operations for the matching reference values can be reduced.
    • 提供了一种用于在分层运动估计中产生中间级运动矢量的方法和装置。 在具有第一分辨率的第一分辨率帧中的第一分辨率帧运动矢量具有第二分辨率的第二分辨率帧中产生TA第二分辨率帧运动矢量,第二分辨率高于第一分辨率。 基于第一分辨率帧运动矢量在第二分辨率帧中确定局部搜索参考点,并且基于第二分辨率帧运动矢量对第二分辨率帧执行本地搜索处理来生成第二分辨率帧运动矢量 确定的本地搜索参考点。 基于对于较低估计块的匹配参考值执行本地搜索处理,每个较低估计块包括当前估计块的一些部分的像素值和过去的估计块。 当前估计块是当前帧的估计块,而过去的估计块是对应的过去帧的估计块。 因此,可以减少用于匹配参考值的操作量。
    • 10. 发明授权
    • Method and apparatus for sinusoidal audio coding and method and apparatus for sinusoidal audio decoding
    • 用于正弦音频编码的方法和装置以及用于正弦音频解码的方法和装置
    • US09076444B2
    • 2015-07-07
    • US12030275
    • 2008-02-13
    • Nam-suk Lee
    • Nam-suk Lee
    • G10L19/12G10L19/093
    • G10L19/093
    • A method and apparatus for sinusoidal audio coding and decoding are provided. The method for sinusoidal audio coding includes performing sinusoidal analysis on an input signal and extracting sinusoids of a current frame; tracking and coding a continuation mode sinusoid of the current frame by using a sinusoid of a previous frame which continues to the continuation mode sinusoid; searching for a sinusoid having a closest frequency to a frequency of a birth mode sinusoid of the current frame; calculating and coding a difference between an amplitude of the sinusoid having the closest frequency and an amplitude of the birth mode sinusoid; and coding the frequency of the birth mode sinusoid.
    • 提供了用于正弦音频编码和解码的方法和装置。 用于正弦音频编码的方法包括对输入信号执行正弦分析并提取当前帧的正弦曲线; 通过使用继续延续模式正弦波的前一帧的正弦曲线来跟踪和编码当前帧的连续模式正弦曲线; 搜索具有与当前帧的诞生模式正弦曲线的频率最接近的频率的正弦曲线; 计算和编码具有最接近频率的正弦曲线的振幅与出生模式正弦曲线的振幅之间的差; 并编码出生模式正弦波的频率。