公开(公告)号：US20080187044A1

公开(公告)日：2008-08-07

申请号：US12019747

申请日：2008-01-25

申请人： So-young KIM ,  Woo-jin HAN

发明人： So-young KIM ,  Woo-jin HAN

IPC分类号： H04N7/26

CPC分类号： H04N19/593 ,  H04N19/51 ,  H04N19/61

摘要： A method and apparatus for encoding and decoding based on inter prediction are provided. In the encoding method, a current block is encoded by respectively performing intra prediction on the current block and a reference block in a reference picture which corresponds to the current block, and performing inter prediction on the current block based on the results of performing intra prediction. Accordingly, it is possible to reduce the size of data regarding the current block, which is generated as a result of performing inter prediction, thereby improving the compression rate of video data.

摘要翻译： 提供了一种基于帧间预测的编码和解码方法和装置。 在编码方法中，通过对当前块和对应于当前块的参考图像中的参考块分别执行帧内预测和对当前块执行帧间预测来编码当前块，并且基于执行帧内预测的结果 。 因此，可以减少作为执行帧间预测的结果而生成的当前块的数据的大小，从而提高视频数据的压缩率。

公开(公告)号：US20080049854A1

公开(公告)日：2008-02-28

申请号：US11844782

申请日：2007-08-24

申请人： So-young KIM ,  Woo-jin HAN

发明人： So-young KIM ,  Woo-jin HAN

IPC分类号： H04B1/69

CPC分类号： H04N19/61 ,  H04N19/122 ,  H04N19/134 ,  H04N19/176 ,  H04N19/50

摘要： Provided are a method and apparatus for transforming an image, in which an input image is transformed into a frequency domain by selectively using a plurality of frequency transform algorithms according to a frequency characteristic of the input image. The method includes: selecting a frequency transform algorithm to be used for a current block from a plurality of frequency transform algorithms according to a result obtained by transforming frequencies of peripheral blocks adjacent to the current block; and transforming the current block into a frequency domain by using the selected frequency transform algorithm.

摘要翻译： 提供了一种用于变换图像的方法和装置，其中通过根据输入图像的频率特性选择性地使用多个频率变换算法将输入图像变换为频域。 该方法包括：根据通过变换与当前块相邻的外围块的频率获得的结果，从多个频率变换算法中选择要用于当前块的频率变换算法; 并通过使用所选择的频率变换算法将当前块变换成频域。

公开(公告)号：US20090147843A1

公开(公告)日：2009-06-11

申请号：US12206924

申请日：2008-09-09

申请人： Woo-jin HAN ,  Bae-keun LEE ,  So-young KIM

发明人： Woo-jin HAN ,  Bae-keun LEE ,  So-young KIM

IPC分类号： H04N7/26

CPC分类号： H04N19/93 ,  H04N19/126 ,  H04N19/134 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/86

摘要： Provided are a quantization method and apparatus and an inverse-quantization method and apparatus for determining quantization steps using lengths of runs that are transform coefficients having consecutive zero values and modifying the transform coefficients. The quantization apparatus can modify quantization steps so that the quantization steps are proportional to lengths of previous runs to quantize significant transform coefficients. As a result, a number of bits generated during coding can be reduced without a great deterioration of video quality.

摘要翻译： 提供了一种量化方法和装置以及用于使用具有连续零值的变换系数并修改变换系数的运行长度确定量化步长的量化方法和装置。 量化装置可以修改量化步长，使得量化步长与先前运行的长度成比例，以量化有效的变换系数。 结果，可以减少编码期间产生的位数，而不会导致视频质量的极大恶化。

公开(公告)号：US20080240245A1

公开(公告)日：2008-10-02

申请号：US12018534

申请日：2008-01-23

申请人： Kyo-hyuk LEE ,  Woo-jin HAN ,  So-young KIM

发明人： Kyo-hyuk LEE ,  Woo-jin HAN ,  So-young KIM

IPC分类号： H04N7/26

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61

摘要： Provided are an image encoding/decoding method and apparatus, which assign a virtual motion vector to a block that is encoded in an intra prediction mode and generate a new prediction block that is a combination of a prediction block generated by motion compensation using the virtual motion vector and another prediction block generated by intra prediction.

摘要翻译： 提供了一种图像编码/解码方法和装置，其将虚拟运动矢量分配给以帧内预测模式编码的块，并且生成新的预测块，该预测块是通过使用虚拟运动的运动补偿生成的预测块的组合 矢量和通过帧内预测生成的另一预测块。

公开(公告)号：US20090232208A1

公开(公告)日：2009-09-17

申请号：US12402903

申请日：2009-03-12

申请人： Kyo-hyuk LEE ,  Woo-jin HAN ,  Sang-rae LEE ,  So-young KIM ,  Tammy Lee

发明人： Kyo-hyuk LEE ,  Woo-jin HAN ,  Sang-rae LEE ,  So-young KIM ,  Tammy Lee

IPC分类号： H04N7/32

CPC分类号： H04N19/61 ,  H04N19/82

摘要： Provided are a method and an apparatus for encoding and decoding an image to improve the efficiency for predicting an image by reducing discontinuity between prediction blocks by performing filtering on a prediction picture. The method of encoding an image includes generating filtered prediction pixel values by performing filtering in which a weighted sum of prediction pixels of a prediction picture with respect to peripheral prediction pixels is calculated, and encoding a difference value between the filtered prediction picture comprising the filtered prediction pixel values and a current picture.

摘要翻译： 提供了一种用于对图像进行编码和解码以通过对预测图像执行滤波来减小预测块之间的不连续性来提高图像预测效率的方法和装置。 编码图像的方法包括：通过执行滤波，生成经滤波的预测像素值，其中计算预测图像相对于周围预测像素的预测像素的加权和，并且对包括滤波预测的滤波预测图像进行编码 像素值和当前照片。

公开(公告)号：US20130044815A1

公开(公告)日：2013-02-21

申请号：US13628682

申请日：2012-09-27

申请人： Tammy LEE ,  Woo-jin HAN ,  Jung-hye MIN

发明人： Tammy LEE ,  Woo-jin HAN ,  Jung-hye MIN

IPC分类号： H04N7/36

CPC分类号： H04N19/33 ,  H04N19/103 ,  H04N19/105 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

摘要： Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block.

摘要翻译： 提供了用于对运动矢量进行编码和解码的方法和装置。 编码运动矢量的方法包括：从表示至少一个运动矢量预测器的运动矢量预测器的信息被编码的第一模式中选择模式，以及第二模式，其中基于 包括在与当前块相邻的先前编码区域中的像素被编码; 根据所选择的模式确定当前块的运动矢量预测器，并且编码关于当前块的运动矢量预测器的信息; 以及对当前块的运动矢量和当前块的运动矢量预测器之间的差矢量进行编码。

公开(公告)号：US20130010872A1

公开(公告)日：2013-01-10

申请号：US13614219

申请日：2012-09-13

申请人： Woo-jin HAN ,  Kyo-hyuk LEE ,  Tammy LEE

发明人： Woo-jin HAN ,  Kyo-hyuk LEE ,  Tammy LEE

IPC分类号： H04N7/32

CPC分类号： H04N19/537 ,  H04N19/132 ,  H04N19/147 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

摘要： Provided is a method of and apparatus for video encoding and decoding based on motion estimation. The method includes generating a motion vector by searching a reference picture using pixels of a current block, generating a prediction motion vector that is a prediction value of the motion vector by searching the reference picture using previously encoded pixels located adjacent to the current block, and encoding the current block based on the motion vector and the prediction motion vector. By accurately predicting the motion vector of the current block, the number of bits required for encoding the motion vector can be reduced, thereby improving the compression rate of video data.

摘要翻译： 提供了一种基于运动估计的用于视频编码和解码的方法和装置。 该方法包括通过使用当前块的像素搜索参考图像来生成运动矢量，通过使用与当前块相邻的先前编码的像素搜索参考图像来生成作为运动矢量的预测值的预测运动矢量，以及 基于运动矢量和预测运动矢量对当前块进行编码。 通过精确地预测当前块的运动矢量，可以减少编码运动矢量所需的位数，从而提高视频数据的压缩率。

公开(公告)号：US20120269449A1

公开(公告)日：2012-10-25

申请号：US13541151

申请日：2012-07-03

申请人： Yu-mi SOHN ,  Woo-jin HAN

发明人： Yu-mi SOHN ,  Woo-jin HAN

IPC分类号： G06K9/36

CPC分类号： H04N19/00569 ,  H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/169 ,  H04N19/176 ,  H04N19/50 ,  H04N19/523 ,  H04N19/593 ,  H04N19/61

摘要： Provided are a method and apparatus for image encoding which improves encoding efficiency in accordance with image characteristics by performing prediction in lines and performing a one-dimensional transformation in lines on an input image, and a method and apparatus for image decoding. Encoding efficiency of an image may be improved by generating a prediction sub residual block using neighboring residues and performing a one-dimensional discrete cosine transformation (DCT) on a difference residual block which is a difference between an original sub residual block and the prediction sub residual block.

摘要翻译： 提供了一种用于图像编码的方法和装置，其通过在行上执行预测并且对输入图像上的行进行一维变换来提高根据图像特性的编码效率，以及用于图像解码的方法和装置。 可以通过使用相邻残差生成预测子残差块并对作为原始子残差块与预测子残差之间的差的差分残差块进行一维离散余弦变换（DCT）来提高图像的编码效率 块。

公开(公告)号：US20120236943A1

公开(公告)日：2012-09-20

申请号：US13482364

申请日：2012-05-29

申请人： Tammy LEE ,  Woo-jin HAN

发明人： Tammy LEE ,  Woo-jin HAN

IPC分类号： H04N7/32

CPC分类号： H04N19/573 ,  H04N19/105 ,  H04N19/17 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

摘要： Provided is a video encoding and decoding method and apparatus. The video encoding method includes selecting a plurality of reference blocks based on a plurality of motion vectors and setting weights assigned to the plurality of reference blocks independently for each of a plurality of regions of a current block in order to predict and encode the current block, thereby providing a new encoding mode allowing accurate prediction of the current block and thus improving the compression rate of video encoding.

摘要翻译： 提供了一种视频编码和解码方法和装置。 视频编码方法包括：基于多个运动矢量选择多个参考块，并且为当前块的多个区域中的每个区域独立地分配给多个参考块的设置权重，以便预测和编码当前块， 从而提供新的编码模式，允许对当前块的精确预测，从而提高视频编码的压缩率。

公开(公告)号：US20120147966A1

公开(公告)日：2012-06-14

申请号：US13403476

申请日：2012-02-23

申请人： Tammy LEE ,  Woo-jin HAN ,  Kyo-hyuk LEE

发明人： Tammy LEE ,  Woo-jin HAN ,  Kyo-hyuk LEE

IPC分类号： H04N7/32 ,  H04N7/50

CPC分类号： H04N19/139 ,  H04N19/105 ,  H04N19/117 ,  H04N19/124 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/865 ,  H04N19/96

摘要： Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.