公开(公告)号：US08199817B2

公开(公告)日：2012-06-12

申请号：US11901589

申请日：2007-09-18

申请人： Yong-Deok Kim ,  Young-O Park ,  Kwang-Pyo Choi ,  Jeong-Seok Choi ,  Young-Hun Joo ,  Kwan-Woong Song ,  Chang-Su Kim

发明人： Yong-Deok Kim ,  Young-O Park ,  Kwang-Pyo Choi ,  Jeong-Seok Choi ,  Young-Hun Joo ,  Kwan-Woong Song ,  Chang-Su Kim

IPC分类号： H04N11/02 ,  H04N7/12

CPC分类号： H04N19/61 ,  H04N19/895

摘要： A method and apparatus for error concealment in decoding of a moving picture. The method includes the steps of determining an erroneous macro block in a present frame when the moving picture is decoded, finding a first macro block having a highest similarity to the erroneous macro block and a second macro block having a next highest similarity to the erroneous block in a previous frame by comparing adjacent pixels of respective blocks in the previous frame with adjacent pixels of the erroneous block in the present frame; and replacing the erroneous block by using an average between the found macro blocks having the highest similarity and the second highest similarity to thereby conceal the erroneous macro block. The apparatus includes a parser, an entropy decoder, an inverse quantizer, an inverse converter, and a concealment unit that uses motion compensation from a previous frame to correct a macro block in a current frame.

摘要翻译： 一种用于运动图像解码中的错误隐藏的方法和装置。 该方法包括以下步骤：当解码运动图像时，确定当前帧中的错误宏块，找到与错误宏块具有最高相似度的第一宏块和与错误块具有次高相似性的第二宏块 在前一帧中通过将前一帧中的各个块的相邻像素与当前帧中的错误块的相邻像素进行比较; 并且通过使用具有最高相似度的所找到的宏块与第二高相似度之间的平均值来替换错误块，从而隐藏错误的宏块。 该装置包括解析器，熵解码器，逆量化器，逆变换器和隐藏单元，其使用来自前一帧的运动补偿来校正当前帧中的宏块。

公开(公告)号：US20080080623A1

公开(公告)日：2008-04-03

申请号：US11901589

申请日：2007-09-18

申请人： Yong-Deok Kim ,  Young-O Park ,  Kwang-Pyo Choi ,  Jeong-Seok Choi ,  Young-Hun Joo ,  Kwan-Woong Song ,  Chang-Su Kim

发明人： Yong-Deok Kim ,  Young-O Park ,  Kwang-Pyo Choi ,  Jeong-Seok Choi ,  Young-Hun Joo ,  Kwan-Woong Song ,  Chang-Su Kim

IPC分类号： H04B1/66

CPC分类号： H04N19/61 ,  H04N19/895

摘要： A method and apparatus for error concealment in decoding of a moving picture. The method includes the steps of determining an erroneous macro block in a present frame when the moving picture is decoded, finding a first macro block having a highest similarity to the erroneous macro block and a second macro block having a next highest similarity to the erroneous block in a previous frame by comparing adjacent pixels of respective blocks in the previous frame with adjacent pixels of the erroneous block in the present frame; and replacing the erroneous block by using an average between the found macro blocks having the highest similarity and the second highest similarity to thereby conceal the erroneous macro block. The apparatus includes a parser, an entropy decoder, an inverse quantizer, an inverse converter, and a concealment unit that uses motion compensation from a previous frame to correct a macro block in a current frame.

摘要翻译： 一种用于运动图像解码中的错误隐藏的方法和装置。 该方法包括以下步骤：当解码运动图像时，确定当前帧中的错误宏块，找到与错误宏块具有最高相似度的第一宏块和与错误块具有次高相似性的第二宏块 在前一帧中通过将前一帧中的各个块的相邻像素与当前帧中的错误块的相邻像素进行比较; 并且通过使用具有最高相似度的所找到的宏块与第二高相似度之间的平均值来替换错误块，从而隐藏错误的宏块。 该装置包括解析器，熵解码器，逆量化器，逆变换器和隐藏单元，其使用来自前一帧的运动补偿来校正当前帧中的宏块。

公开(公告)号：US20090196507A1

公开(公告)日：2009-08-06

申请号：US12322250

申请日：2009-01-30

申请人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

发明人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

IPC分类号： G06K9/48

CPC分类号： G06K9/00234 ,  G06K9/00369 ,  G06K9/48

摘要： A method and apparatus for estimating the contour of a user object in a moving picture during video communications so that a personal background image is not provided during video communications. Information about center coordinates as well as a size of a face of the user object is extracted from a moving picture frame. Edges are extracted from the moving picture frame, and a boundary of a head of the user object is estimated using a semicircle. The boundaries of left and right shoulders and left and right arms of the user object are estimated using second-order function graphs that overlap a largest portion of the edges. An entire contour of the user object is estimated according to the boundaries of the head, the left and right shoulders, and the left and right arms of the user object.

摘要翻译： 一种用于在视频通信期间估计运动图像中的用户对象的轮廓的方法和装置，使得在视频通信期间不提供个人背景图像。 从运动图像帧中提取关于中心坐标以及用户对象的面部大小的信息。 从运动图像帧提取边缘，并且使用半圆来估计用户对象的头部的边界。 使用与边缘的最大部分重叠的二阶函数图来估计用户对象的左肩和右肩和左右臂的边界。 用户对象的整体轮廓根据用户对象的头部，左肩和右肩部以及左右臂的边界来估计。

公开(公告)号：US08300947B2

公开(公告)日：2012-10-30

申请号：US12322250

申请日：2009-01-30

申请人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

发明人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

IPC分类号： G06K9/48

CPC分类号： G06K9/00234 ,  G06K9/00369 ,  G06K9/48

摘要： A method and apparatus for estimating the contour of a user object in a moving picture during video communications so that a personal background image is not provided during video communications. Information about center coordinates as well as a size of a face of the user object is extracted from a moving picture frame. Edges are extracted from the moving picture frame, and a boundary of a head of the user object is estimated using a semicircle. The boundaries of left and right shoulders and left and right arms of the user object are estimated using second-order function graphs that overlap a largest portion of the edges. An entire contour of the user object is estimated according to the boundaries of the head, the left and right shoulders, and the left and right arms of the user object.

摘要翻译： 一种用于在视频通信期间估计运动图像中的用户对象的轮廓的方法和装置，使得在视频通信期间不提供个人背景图像。 从运动图像帧中提取关于中心坐标以及用户对象的面部大小的信息。 从运动图像帧提取边缘，并且使用半圆来估计用户对象的头部的边界。 使用与边缘的最大部分重叠的二阶函数图来估计用户对象的左肩和右肩和左右臂的边界。 用户对象的整体轮廓根据用户对象的头部，左肩和右肩部以及左右臂的边界来估计。

公开(公告)号：US08437393B2

公开(公告)日：2013-05-07

申请号：US12363812

申请日：2009-02-02

申请人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

发明人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

IPC分类号： H04N7/12 ,  G06K9/00

CPC分类号： G06T7/143 ,  G06T7/12 ,  G06T7/194 ,  G06T2207/10016 ,  G06T2207/20092

摘要： A method for estimating a boundary between a background and a user object in a video, in which the user object is segmented from the background is provided. The initial object contour is estimated in a first video frame for object segmentation, and color probability density functions are estimated for the user object and the background segmented from the first video frame. An edge strip with a predetermined width is generated in a current frame based on an object contour of a previous frame, and a coherence probability density function of the edge strip is estimated. The user object is segmented in the current frame by energy minimization.

摘要翻译： 提供了一种用于估计视频中的背景和用户对象之间的边界的方法，其中用户对象从背景被分割。 在用于对象分割的第一视频帧中估计初始对象轮廓，并且针对用户对象和从第一视频帧分割的背景估计颜色概率密度函数。 基于前一帧的对象轮廓在当前帧中生成具有预定宽度的边缘条，并且估计边缘条的相干概率密度函数。 通过能量最小化在当前帧中对用户对象进行分段。

公开(公告)号：US20090190662A1

公开(公告)日：2009-07-30

申请号：US12362573

申请日：2009-01-30

申请人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Il-Lyong Jung

发明人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Il-Lyong Jung

IPC分类号： H04N7/26

CPC分类号： H04N19/132 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46 ,  H04N19/51 ,  H04N19/597

摘要： A method for encoding a multiview video includes estimating and compensating for a motion between a plurality of pictures from more than one view. A first video captured at a first view becomes a basis and for performing encoding on the first video using the motion estimation and compensation result. Motion estimation and compensation is then performed on a predetermined picture selected from among a plurality of pictures included in a second video captured at a second view being different from that of the first video. The picture from the second view is then encoded using the motion estimation and compensation result. A bit stream is generated including encoded data of the first video and encoded data of the second video.

摘要翻译： 用于编码多视图视频的方法包括从多于一个视图估计和补偿多个图片之间的运动。 以第一视图拍摄的第一视频成为使用运动估计和补偿结果对第一视频执行编码的基础。 然后对从包含在与第一视频不同的第二视图捕获的第二视频中的多个图像中选择的预定图像执行运动估计和补偿。 然后使用运动估计和补偿结果对来自第二视图的图像进行编码。 生成包括第一视频的编码数据和第二视频的编码数据的比特流。

公开(公告)号：US08472530B2

公开(公告)日：2013-06-25

申请号：US12313559

申请日：2008-11-21

申请人： Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi

发明人： Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi

IPC分类号： H04N7/18

CPC分类号： H04N19/132 ,  H04N19/166 ,  H04N19/172 ,  H04N19/587 ,  H04N19/61 ,  H04N19/895

摘要： Disclosed is a selective frame error concealment method for a moving picture frame, the method including the steps of determining if an erroneous frame corresponds to one among a predetermined number of frames received after an I frame when the erroneous frame is received during reception of moving picture frames, determining if the number of consecutive erroneous frames is greater than a threshold value when the erroneous frame does not correspond to one among the predetermined number of frames received after the I frame, using an error concealment technique when the number of consecutive erroneous frames is equal to or less than the threshold value; and displaying a frame, which has been received without error before the erroneous frame, until receiving a new I frame, either when the erroneous frame corresponds to one among the predetermined number of frames received after the I frame, or when the number of consecutive erroneous frames is greater than the threshold value.

公开(公告)号：US20080095471A1

公开(公告)日：2008-04-24

申请号：US11904058

申请日：2007-09-26

申请人： Yong-Deok Kim ,  Chan-Yul Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi

发明人： Yong-Deok Kim ,  Chan-Yul Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi

IPC分类号： G06K9/32

CPC分类号： G06F17/17 ,  H04N7/0135 ,  H04N19/186 ,  H04N19/43 ,  H04N19/523 ,  H04N19/577 ,  H04N19/61

摘要： Disclosed is a method for interpolating chroma signals while minimizing the calculation overhead. To this end, multiplication requiring a large operation is removed when obtaining a fractional-pel value through chroma interpolation, and a simple linear interpolation method is used in order to reduce the number of operations including addition, subtraction, etc. In this way, it is possible to considerably reduce the operation amount for an ME and an MC which normally consume more than about 30% of H.264 system processing power.

摘要翻译： 公开了一种在最小化计算开销的同时内插色度信号的方法。 为此，当通过色度插值获得小数像素值时，需要大量操作的乘法被去除，并且使用简单的线性插值方法来减少包括加法和减法等的操作次数。以这种方式 可以显着地减少通常消耗大约30％的H.264系统处理能力的ME和MC的操作量。

公开(公告)号：US08411959B2

公开(公告)日：2013-04-02

申请号：US12528367

申请日：2008-02-22

申请人： Kyung-Ho Chae ,  Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Ick Kim ,  Won-Jun Kim

发明人： Kyung-Ho Chae ,  Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Ick Kim ,  Won-Jun Kim

IPC分类号： G06K9/48

CPC分类号： G06T7/12 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/20132 ,  G06T2207/30221

摘要： Disclosed is a method for extracting a region-of-interest of a user in a multimedia mobile terminal. The method includes: setting a search region in an input picture input to the multimedia mobile terminal on a screen picture-to-screen picture basis, and extracting a group of boundary of a region-of-interest based on a brightness difference between the set search region and an environment around the set search region; determining boundary coordinates of the region-of-interest through learning during a predetermined frame among the extracted group of boundary coordinate candidates; and enlarging the region-of-interest having the determined boundary coordinates, and displaying the enlarged region-of-interest. As a result, a region the user is most interested in or pays more attention to than other regions on a screen is automatically extracted. Accordingly, it is possible for users to view pictures in such an efficient manner as to provide the users with an even better experience and understanding during viewing.

摘要翻译： 公开了一种用于提取多媒体移动终端中的用户的感兴趣区域的方法。 该方法包括：在屏幕画面到画面的基础上，在输入到多媒体移动终端的输入图像中设置搜索区域，并且基于该组合之间的亮度差提取兴趣区域的边界组 搜索区域和设置搜索区域周围的环境; 通过在提取的边界坐标候选组中的预定帧期间的学习来确定兴趣区域的边界坐标; 并且扩大具有确定的边界坐标的兴趣区域，并且显示放大的感兴趣区域。 因此，自动提取用户对屏幕上其他区域最感兴趣或更加重视的区域。 因此，用户可以以如此有效的方式查看图片，以便在观看期间为用户提供更好的体验和理解。

公开(公告)号：US20090141166A1

公开(公告)日：2009-06-04

申请号：US12313559

申请日：2008-11-21

申请人： Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi

发明人： Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi

IPC分类号： H04N7/12

CPC分类号： H04N19/132 ,  H04N19/166 ,  H04N19/172 ,  H04N19/587 ,  H04N19/61 ,  H04N19/895

摘要： Disclosed is a selective frame error concealment method for a moving picture frame, the method including the steps of determining if an erroneous frame corresponds to one among a predetermined number of frames received after an I frame when the erroneous frame is received during reception of moving picture frames, determining if the number of consecutive erroneous frames is greater than a threshold value when the erroneous frame does not correspond to one among the predetermined number of frames received after the I frame, using an error concealment technique when the number of consecutive erroneous frames is equal to or less than the threshold value; and displaying a frame, which has been received without error before the erroneous frame, until receiving a new I frame, either when the erroneous frame corresponds to one among the predetermined number of frames received after the I frame, or when the number of consecutive erroneous frames is greater than the threshold value.

摘要翻译： 公开了一种用于运动图像帧的选择性帧错误隐藏方法，该方法包括以下步骤：在接收到运动图像期间接收到错误帧时，确定在I帧之后接收的预定数目的帧中是否存在错误帧 帧，当错误帧不对应于在I帧之后接收到的预定帧数之中时，连续错误帧的数量是否大于阈值，当连续错误帧的数量为 等于或小于阈值; 并且当错误帧对应于在I帧之后接收到的预定数量的帧中的一个时，或者当连续的错误帧的数目相对应时，显示在错误帧之前没有错误地接收到的帧直到接收到新的I帧 帧大于阈值。