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1.发明授权Method for selecting output motion vector based on motion vector refinement and transcoder using the same 有权基于运动矢量细化选择输出运动矢量的方法及使用其的代码转换器公开(公告)号：US07899120B2
公开(公告)日：2011-03-01
申请号：US11239533
申请日：2005-09-29
申请人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
发明人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
IPC分类号： H04N11/02
摘要： A method of estimating output motion vector includes generating a group of candidate motion vectors, selecting two or more reference vectors, variably establishing a search window, and estimating an output motion vector by performing a motion vector refinement on the search window. The method selects the two or more reference vectors from the group of the candidate motion vectors and the search window is established according to a relativity among the reference vectors. A transcoder using the method includes an encoding parameter estimator configured to select the two or more reference vectors and to variably establish the search window according to the relativity between the reference vectors. Therefore, the search window may be efficiently established without increasing calculation time, so that the output motion vector may be more correctly estimated.
摘要翻译： 估计输出运动矢量的方法包括生成一组候选运动矢量，选择两个或多个参考矢量，可变地建立搜索窗口，以及通过在搜索窗口上执行运动矢量细化来估计输出运动矢量。 该方法从候选运动矢量组中选择两个或更多个参考矢量，并根据参考矢量之间的相对性建立搜索窗口。 使用该方法的代码转换器包括：编码参数估计器，被配置为选择两个或更多个参考矢量，并根据参考矢量之间的相对性可变地建立搜索窗口。 因此，可以在不增加计算时间的情况下有效地建立搜索窗口，从而可以更正确地估计输出运动矢量。
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2.发明授权Methods and transcoders that estimate an output macroblock and motion vector for video transcoding 有权估计输出宏块和视频转码运动矢量的方法和代码转换器公开(公告)号：US07903731B2
公开(公告)日：2011-03-08
申请号：US11238567
申请日：2005-09-29
申请人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
发明人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
IPC分类号： H04N7/12
CPC分类号： H04N19/105 , H04N19/139 , H04N19/14 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/51 , H04N19/56
摘要： Methods and transcoders are disclosed for video transcoding input macroblocks to an output macroblock. One of the methods estimates an output macroblock mode for the video transcoding. A spatial weight is determined based on size of overlapping areas of each of the input macroblocks with a correlation area that is correlated with the output macroblock. A discrete cosine transform (DCT) weight is determined based on a number of zero DCT coefficients of each of the input macroblocks that overlap the correlation area. The output macroblock mode is estimated based on the spatial weight and the DCT weight.
摘要翻译： 公开了用于视频代码转换输入宏块到输出宏块的方法和代码转换器。 其中一种方法估计视频转码的输出宏块模式。 基于与输出宏块相关联的相关区域的每个输入宏块的重叠区域的大小来确定空间权重。 基于与相关区域重叠的每个输入宏块的零DCT系数的数量来确定离散余弦变换（DCT）权重。 基于空间权重和DCT权重来估计输出宏块模式。
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3.发明申请Method for selecting output motion vector based on motion vector refinement and transcoder using the same 有权基于运动矢量细化选择输出运动矢量的方法及使用其的代码转换器公开(公告)号：US20060072666A1
公开(公告)日：2006-04-06
申请号：US11239533
申请日：2005-09-29
申请人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
发明人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
摘要： A method of estimating output motion vector includes generating a group of candidate motion vectors, selecting two or more reference vectors, variably establishing a search window, and estimating an output motion vector by performing a motion vector refinement on the search window. The method selects the two or more reference vectors from the group of the candidate motion vectors and the search window is established according to a relativity among the reference vectors. A transcoder using the method includes an encoding parameter estimator configured to select the two or more reference vectors and to variably establish the search window according to the relativity between the reference vectors. Therefore, the search window may be efficiently established without increasing calculation time, so that the output motion vector may be more correctly estimated.
摘要翻译： 估计输出运动矢量的方法包括生成一组候选运动矢量，选择两个或多个参考矢量，可变地建立搜索窗口，以及通过在搜索窗口上执行运动矢量细化来估计输出运动矢量。 该方法从候选运动矢量组中选择两个或更多个参考矢量，并根据参考矢量之间的相对性建立搜索窗口。 使用该方法的代码转换器包括：编码参数估计器，被配置为选择两个或更多个参考矢量，并根据参考矢量之间的相对性可变地建立搜索窗口。 因此，可以在不增加计算时间的情况下有效地建立搜索窗口，从而可以更正确地估计输出运动矢量。
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4.发明申请Methods and transcoders that estimate an output macroblock and motion vector for video transcoding 有权估计输出宏块和视频转码运动矢量的方法和代码转换器公开(公告)号：US20060072665A1
公开(公告)日：2006-04-06
申请号：US11238567
申请日：2005-09-29
申请人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
发明人： Jin-Soo Cho , Jong-Woo Bae , Dong-Wan Seo , Yoon-Sik Choe
CPC分类号： H04N19/105 , H04N19/139 , H04N19/14 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/51 , H04N19/56
摘要： Methods and transcoders are disclosed for video transcoding input macroblocks to an output macroblock. One of the methods estimates an output macroblock mode for the video transcoding. A spatial weight is determined based on size of overlapping areas of each of the input macroblocks with a correlation area that is correlated with the output macroblock. A discrete cosine transform (DCT) weight is determined based on a number of zero DCT coefficients of each of the input macroblocks that overlap the correlation area. The output macroblock mode is estimated based on the spatial weight and the DCT weight.
摘要翻译： 公开了用于视频代码转换输入宏块到输出宏块的方法和代码转换器。 其中一种方法估计视频转码的输出宏块模式。 基于与输出宏块相关联的相关区域的每个输入宏块的重叠区域的大小来确定空间权重。 基于与相关区域重叠的每个输入宏块的零DCT系数的数量来确定离散余弦变换（DCT）权重。 基于空间权重和DCT权重来估计输出宏块模式。
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