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    Method for error concealment in decoding of moving picture and decoding apparatus using the same
    1.
    发明授权
    Method for error concealment in decoding of moving picture and decoding apparatus using the same 有权
    运动图像解码中的误差隐藏方法及使用该方法的解码装置

    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。

    Method for error concealment in decoding of moving picture and decoding apparatus using the same
    2.
    发明申请
    Method for error concealment in decoding of moving picture and decoding apparatus using the same 有权
    运动图像解码中的误差隐藏方法及使用该方法的解码装置

    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。

    Method and apparatus for estimating object contour in a moving picture
    3.
    发明申请
    Method and apparatus for estimating object contour in a moving picture 有权
    用于估计运动图像中物体轮廓的方法和装置

    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。

    Method for estimating contour of video object
    4.
    发明授权
    Method for estimating contour of video object 有权
    估计视频对象轮廓的方法

    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。

    METHOD AND APPARATUS FOR ENCODING AND DECODING MULTIVIEW VIDEO
    5.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING MULTIVIEW VIDEO 审中-公开
    用于编辑和解码多媒体视频的方法和装置

    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。

    Method and apparatus for estimating object contour in a moving picture
    6.
    发明授权
    Method and apparatus for estimating object contour in a moving picture 有权
    用于估计运动图像中物体轮廓的方法和装置

    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。

    Method and apparatus for reproduction of image frame in image receiving system
    8.
    发明授权
    Method and apparatus for reproduction of image frame in image receiving system 有权
    用于在图像接收系统中再现图像帧的方法和装置

    公开(公告)号：US08228999B2

    公开(公告)日：2012-07-24

    申请号：US11652989

    申请日：2007-01-12

    申请人： Young-O Park ,  Kwang-Pyo Choi ,  Young-Hun Joo

    发明人： Young-O Park ,  Kwang-Pyo Choi ,  Young-Hun Joo

    IPC分类号： H04N11/02 ,  H04J3/06

    CPC分类号： H04N21/23406 ,  H04N21/4307 ,  H04N21/44004

    摘要： An apparatus for reproduction of an image frame in an image receiving system is disclosed. The apparatus includes a demultiplexer for restoring a received signal to a decodable bitstream and generating start information of each image frame of the bitstream, and an image decoder for decoding the bitstream restored by the demultiplexer, thereby generating a reproducible I frame or P frame, which is an image frame; an image reproduction time uniformity processing module for buffering each image frame output from the image decoder, and then outputting the buffered I frame or P frame while delaying the I frame or P frame based on the start information of each image frame provided by the demultiplexer according to a preset delay time. The present delay time has been preset to be greater than a processing time period required for decoding of an I frame and to be less than a time interval between image frames in the image bitstream. The apparatus may also includes an image output unit for providing an output of the image reproduction time uniformity processing module to an external output unit to display said output.

    摘要翻译： 公开了一种在图像接收系统中再现图像帧的装置。 该装置包括用于将接收到的信号恢复到可解码比特流并产生比特流的每个图像帧的开始信息的解复用器，以及用于解码由解复用器恢复的比特流的图像解码器，从而生成可再现I帧或P帧， 是一个图像帧; 图像再现时间均匀性处理模块，用于缓冲从图像解码器输出的每个图像帧，然后基于多路分解器提供的每个图像帧的开始信息延迟I帧或P帧，输出缓冲的I帧或P帧， 到预设的延迟时间。 现在的延迟时间已被预设为大于对I帧进行解码所需的处理时间段，并且小于图像比特流中的图像帧之间的时间间隔。 该装置还可以包括用于将图像再现时间均匀性处理模块的输出提供给外部输出单元以显示所述输出的图像输出单元。

    METHOD AND APPARATUS FOR VIDEO DECODING, IN THE PRESENCE OF NOISE
    9.
    发明申请
    METHOD AND APPARATUS FOR VIDEO DECODING, IN THE PRESENCE OF NOISE 有权
    用于视频解码的方法和装置，在噪声存在的情况下

    公开(公告)号：US20090161768A1

    公开(公告)日：2009-06-25

    申请号：US12340826

    申请日：2008-12-22

    申请人： Young-O Park ,  Young-Hun Joo ,  Kwang-Pyo Choi

    发明人： Young-O Park ,  Young-Hun Joo ,  Kwang-Pyo Choi

    IPC分类号： H04N7/64 ,  H04N7/26

    CPC分类号： H04N19/117 ,  H04N19/154 ,  H04N19/172 ,  H04N19/44 ,  H04N19/61

    摘要： A method and apparatus for decoding video data that is encoded by bit rate control to keep a bandwidth of a bit stream in a predetermined range are provided. The encoded video data is decoded, picture quality estimation information is estimated, the estimation including information about a bit stream size of a decoded video frame, the number of fragmented macro blocks included in the video frame, and the number of skip-mode macro blocks included in the video frame, the picture quality of the video data is determined based on a correlation between picture quality estimation information and SNR, and the video data is output by applying a picture quality improving algorithm to the video data, if the determined picture quality is lower than a predetermined level.

    摘要翻译： 提供了一种用于解码通过比特率控制编码以将比特流的带宽保持在预定范围内的视频数据的方法和装置。 编码视频数据被解码，估计画面质量估计信息，包括关于解码视频帧的比特流大小的信息的估计，包括在视频帧中的分段宏块的数量和跳过模式宏块的数量 包括在视频帧中，基于图像质量估计信息和SNR之间的相关性来确定视频数据的图像质量，并且通过对视频数据应用图像质量改进算法来输出视频数据，如果所确定的图像质量 低于预定水平。