公开(公告)号：US08396123B2

公开(公告)日：2013-03-12

申请号：US13183049

申请日：2011-07-14

Applicant: Woo-jin Han ,  Kyo-hyuk Lee

Inventor： Woo-jin Han ,  Kyo-hyuk Lee

IPC: H04N7/12

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/137 ,  H04N19/147 ,  H04N19/176 ,  H04N19/187 ,  H04N19/33 ,  H04N19/59

Abstract: A video coding and decoding method using a weighted prediction and an apparatus for the same are provided. The video coding method includes generating a predicted image for a present block; generating a weighted prediction factor which is a scaling factor of the predicted image that minimizes the difference between the present block and the predicted image; generating a weighted prediction image by multiplying the predicted image by the weighted prediction factor; and coding a residual signal generated by subtracting the weighted prediction image from the present block.

Abstract translation: 提供了使用加权预测的视频编码和解码方法及其装置。 视频编码方法包括生成当前块的预测图像; 产生加权预测因子，其是使所述当前块与所述预测图像之间的差最小化的所述预测图像的缩放因子; 通过将预测图像乘以加权预测因子来生成加权预测图像; 以及对从当前块中减去加权预测图像而产生的残差信号进行编码。

公开(公告)号：US20130044815A1

公开(公告)日：2013-02-21

申请号：US13628682

申请日：2012-09-27

Applicant: Tammy LEE ,  Woo-jin HAN ,  Jung-hye MIN

Inventor： Tammy LEE ,  Woo-jin HAN ,  Jung-hye MIN

IPC: H04N7/36

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US08374243B2

公开(公告)日：2013-02-12

申请号：US12016554

申请日：2008-01-18

Applicant: Woo-jin Han ,  Yu-mi Sohn

Inventor： Woo-jin Han ,  Yu-mi Sohn

IPC: H04N7/12

CPC classification number: H04N19/00569 ,  H04N19/11 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/50 ,  H04N19/593 ,  H04N19/61

Abstract: Methods and apparatuses for encoding and decoding based on intra prediction. The method of encoding an image based on intra prediction comprises dividing a current block into a plurality of sub blocks so that a plurality of unit blocks adjacent to each other are included in one of the sub blocks based on an intra prediction direction of each of the unit blocks included in the current block, and performing intra prediction encoding on each of the sub blocks so that only information about one intra prediction direction is encoded in each of the sub blocks.

Abstract translation: 基于帧内预测的编码和解码方法和装置。 基于帧内预测对图像进行编码的方法包括将当前块划分为多个子块，使得相邻的多个单位块基于每个子块的帧内预测方向包括在子块之一中 包括在当前块中的单元块，并且对每个子块执行帧内预测编码，使得仅在每个子块中编码关于一个帧内预测方向的信息。

公开(公告)号：US20130028331A1

公开(公告)日：2013-01-31

申请号：US13641389

申请日：2011-04-13

Applicant: Jung-hye Min ,  Woo-jin Han

Inventor： Jung-hye Min ,  Woo-jin Han

IPC: H04N7/26

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: Provided are a method and apparatus for encoding a video and a method and apparatus for decoding a video. The encoding method includes: splitting a picture of the video into one or more maximum coding units that are coding units having a maximum size; encoding the picture based on coding units according to depths which are obtained by hierarchically splitting each of the one or more maximum coding units according to depths in each of the one or more maximum coding units, determining coding units according to coded depths with respect to each of the coding units according to depths, and thus determining coding units having a tree structure; and outputting data that is encoded based on the coding units having the tree structure, information about the coded depths and an encoding mode, and coding unit structure information indicating a size and a variable depth of a coding unit.

Abstract translation: 提供了一种用于对视频进行编码的方法和装置以及用于对视频进行解码的方法和装置。 编码方法包括：将视频图像分割为具有最大尺寸的编码单元的一个或多个最大编码单元; 基于根据通过根据一个或多个最大编码单位中的每一个中的深度分层划分一个或多个最大编码单元中的每一个而获得的深度编码图像的编码单元，根据相对于每个最大编码单元的编码深度确定编码单元 根据深度编码单元，从而确定具有树结构的编码单元; 并且输出基于具有树结构的编码单元，关于编码深度的信息和编码模式进行编码的数据，以及指示编码单元的大小和可变深度的编码单元结构信息。

公开(公告)号：US20130010872A1

公开(公告)日：2013-01-10

申请号：US13614219

申请日：2012-09-13

Applicant: Woo-jin HAN ,  Kyo-hyuk LEE ,  Tammy LEE

Inventor： Woo-jin HAN ,  Kyo-hyuk LEE ,  Tammy LEE

IPC: H04N7/32

CPC classification number: H04N19/537 ,  H04N19/132 ,  H04N19/147 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

Abstract: 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.

Abstract translation: 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：US20120294363A1

公开(公告)日：2012-11-22

申请号：US13574110

申请日：2011-01-19

Applicant: Tammy Lee ,  Woo-jin Han

Inventor： Tammy Lee ,  Woo-jin Han

IPC: H04N7/32

CPC classification number: H04N19/513 ,  H04N19/124 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/56 ,  H04N19/577 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: An encoding method and apparatus and a decoding method and apparatus for determining a motion vector of a current block based on a motion vector of at least one previously-encoded or previously-decoded block are provided. The decoding method includes: decoding information regarding a prediction direction from among a first direction, a second direction, and bi-directions, and information regarding pixel values of the current block; determining the prediction direction in which the current block is to be predicted, based on the decoded information regarding the prediction direction, and determining a motion vector for predicting the current block in the determined prediction direction; and restoring the current block, based on the determined motion vector and the decoded information regarding the pixel values, wherein the first direction is a direction from a current picture to a previous picture, and the second direction is a direction from the current picture to a subsequent picture.

Abstract translation: 提供了一种用于基于至少一个先前编码或先前解码的块的运动矢量来确定当前块的运动矢量的编码方法和装置以及解码方法和装置。 解码方法包括：从第一方向，第二方向和双向解码关于预测方向的信息，以及关于当前块的像素值的信息; 基于关于预测方向的解码信息，确定当前块要预测的预测方向，并且确定用于在确定的预测方向上预测当前块的运动矢量; 并且基于所确定的运动矢量和关于像素值的解码信息来恢复当前块，其中第一方向是从当前图像到先前图像的方向，并且第二方向是从当前图像到 后续图片。

公开(公告)号：US08315309B2

公开(公告)日：2012-11-20

申请号：US12329945

申请日：2008-12-08

Applicant: Jung-hye Min ,  Tammy Lee ,  Woo-jin Han ,  Hae-kyung Jung ,  Il-koo Kim

Inventor： Jung-hye Min ,  Tammy Lee ,  Woo-jin Han ,  Hae-kyung Jung ,  Il-koo Kim

IPC: H04N11/04

CPC classification number: H04N19/533 ,  H04N19/105 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/61

Abstract: A method and apparatus for encoding and decoding an image. The method of encoding an image includes generating a prediction block of a current block of a current image by performing continuous motion estimation, and encoding the current block based on the generated prediction block. The current block can be more precisely predicted so that the compression rate of image encoding is improved.

Abstract translation: 一种用于对图像进行编码和解码的方法和装置。 编码图像的方法包括通过执行连续运动估计来生成当前图像的当前块的预测块，并且基于所生成的预测块对当前块进行编码。 可以更精确地预测当前块，从而提高图像编码的压缩率。

公开(公告)号：US08311118B2

公开(公告)日：2012-11-13

申请号：US13403476

申请日：2012-02-23

Applicant: Tammy Lee ,  Woo-jin Han ,  Kyo-hyuk Lee

Inventor： Tammy Lee ,  Woo-jin Han ,  Kyo-hyuk Lee

IPC: H04N7/12

CPC classification number: 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

Abstract: 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.

Abstract translation: 提供了用于对运动矢量进行编码和解码的方法和装置。 对运动矢量进行编码的方法包括：作为对当前块的运动矢量预测器的信息进行编码的模式，选择对从至少一个运动矢量预测器中的运动矢量预测器进行编码的信息进行编码的第一模式， 第二模式，其中编码基于与当前块相邻的先前编码区域中包括的块或像素的运动矢量预测器的生成的信息; 根据所选择的模式确定当前块的运动矢量预测器，并对关于当前块的运动矢量预测器的信息进行编码; 并且对当前块的运动矢量与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：US08306115B2

公开(公告)日：2012-11-06

申请号：US12396582

申请日：2009-03-03

Applicant: Woo-jin Han ,  Duck-yeon Kim

Inventor： Woo-jin Han ,  Duck-yeon Kim

IPC: H04B1/66 ,  H04N7/12

CPC classification number: H04N19/36 ,  H04N19/105 ,  H04N19/122 ,  H04N19/124 ,  H04N19/126 ,  H04N19/176 ,  H04N19/30 ,  H04N19/467 ,  H04N19/61

Abstract: Provided are a method and apparatus for encoding an image capable of improving compression efficiency of the image by compensating for a loss due to quantization of a residual block in the frequency domain, and a method and apparatus for decoding the image. The method of encoding an image includes: generating a prediction macro block for a current macro block; generating a first residual block which is a difference between the prediction macro block and the current macro block; generating a compensation residual block by compensating for a quantization loss of the first residual block in the frequency domain; compensating for the prediction macro block by adding the compensation residual block and the prediction macro block.

Abstract translation: 提供了一种通过补偿由于频域中的残差块的量化造成的损失而能够提高图像的压缩效率的图像的方法和装置，以及用于对图像进行解码的方法和装置。 编码图像的方法包括：产生用于当前宏块的预测宏块; 产生作为预测宏块与当前宏块之间的差的第一残差块; 通过补偿频域中的第一残差块的量化损耗来产生补偿残差块; 通过添加补偿残差块和预测宏块来补偿预测宏块。

公开(公告)号：US20120269449A1

公开(公告)日：2012-10-25

申请号：US13541151

申请日：2012-07-03

Applicant: Yu-mi SOHN ,  Woo-jin HAN

Inventor： Yu-mi SOHN ,  Woo-jin HAN

IPC: G06K9/36

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

Abstract: 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.

Abstract translation: 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。