利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

90 条记录 (耗时 0.026 秒)

    Apparatus and method for determining adaptive encoding mode in H.264 encoder
    1.
    发明申请
    Apparatus and method for determining adaptive encoding mode in H.264 encoder 审中-公开
    用于确定H.264编码器中的自适应编码模式的装置和方法

    公开(公告)号：US20080095242A1

    公开(公告)日：2008-04-24

    申请号：US11904701

    申请日：2007-09-28

    申请人： Yong-Hyun Lim ,  Young-O Park ,  Yun-Je Oh ,  Young-Hun Joo

    发明人： Yong-Hyun Lim ,  Young-O Park ,  Yun-Je Oh ,  Young-Hun Joo

    IPC分类号： H04N7/26

    CPC分类号： H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/51

    摘要： An apparatus for determining an encoding mode in an H.264 encoder is provided with a 16×16 macroblock number calculating unit and a threshold updating unit. The 16×16 macroblock number calculating unit calculates means of the number of 16×16 macroblocks. The threshold updating unit compares the number of 16×16 macroblocks of a frame, which is chosen to be currently encoded, with the mean of the number of 16×16 macroblocks among or within the frames, and updates a currently set threshold according to a result of comparing. Then, calculating unit checks the number of times by which the encoding mode is determined by the 16×16 macroblock in a frame whose encoding is currently completed, and the threshold updating unit compares the number of times with the currently set threshold to increase or decrease the threshold according to a result of the comparison.

    摘要翻译： 用于确定H.264编码器中的编码模式的装置具有16×16宏块数计算单元和阈值更新单元。 16×16宏块数计算单元计算16×16宏块的数量的装置。 阈值更新单元将选择当前被编码的帧的16×16个宏块的数目与帧内或帧内的16×16个宏块的数目的平均值进行比较，并且根据比较结果来更新当前设置的阈值。 然后，计算单元检查在编码当前完成的帧中由16×16宏块确定编码模式的次数，并且阈值更新单元将该次数与当前设置的阈值进行比较以增加或减少阈值 根据比较的结果。

    Method for video frame rate conversion
    2.
    发明申请
    Method for video frame rate conversion 审中-公开
    视频帧率转换方法

    公开(公告)号：US20080095239A1

    公开(公告)日：2008-04-24

    申请号：US11897393

    申请日：2007-08-30

    申请人： Yong-Hyun Lim ,  Jae-Hoon Kwon ,  Yun-Je Oh ,  Young-Hun Joo

    发明人： Yong-Hyun Lim ,  Jae-Hoon Kwon ,  Yun-Je Oh ,  Young-Hun Joo

    IPC分类号： H04N7/32

    CPC分类号： H04N19/577 ,  H04N19/132 ,  H04N19/51 ,  H04N19/52 ,  H04N19/587

    摘要： Methods and apparatus for video frame rate conversion are disclosed. In one aspect of the invention, a basic interpolation motion vector for an interpolated frame is generated using a motion vector of a current frame. The motion vector of the current frame is compared with a motion vector of a previous frame. The basic interpolation motion vector is offset and corrected according to a comparison result. The interpolated frame is generated by performing motion compensation using at least one of the basic interpolation motion vector and the corrected basic interpolation motion vector.

    摘要翻译： 公开了用于视频帧速率转换的方法和装置。 在本发明的一个方面中，使用当前帧的运动矢量生成用于内插帧的基本插值运动矢量。 将当前帧的运动矢量与前一帧的运动矢量进行比较。 基本插补运动矢量根据比较结果进行偏移和校正。 通过使用基本插补运动矢量和校正的基本插补运动矢量中的至少一个来执行运动补偿来生成内插帧。

    Method and apparatus for estimating object contour in a moving picture
    5.
    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 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 for estimating contour of video object
    7.
    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
    8.
    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。