公开(公告)号：US06937653B2

公开(公告)日：2005-08-30

申请号：US09861359

申请日：2001-05-18

申请人： Joon-Ho Song ,  Hyun-Soo Kang ,  Jae-Won Chung

发明人： Joon-Ho Song ,  Hyun-Soo Kang ,  Jae-Won Chung

IPC分类号： H04N19/00 ,  G06F15/16 ,  H04N19/126 ,  H04N19/132 ,  H04N19/146 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/70 ,  H04N19/91 ,  H04N7/18

CPC分类号： H04N19/587 ,  H04N19/115 ,  H04N19/124 ,  H04N19/132 ,  H04N19/149 ,  H04N19/152 ,  H04N19/164 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61

摘要： A rate control apparatus for real-time video communication includes: an initialization unit for setting an initial value required for rate control according to a transmission speed and the number of input frames; a target bit calculation unit for obtaining the target number of encoding bits, maximum allowable number of bits, and minimum allowable number of bits in consideration of a buffer state and a transmission speed; a rate control and encoder unit for executing rate control and encoding using the maximum allowable number of bits and the minimum allowable number of bits; a stuffing control unit for comparing the size of a bit stream from the rate control and encoding unit with the target number of encoding bits from the target bit calculation unit for thereby outputting stuffing bits; a buffering unit for storing a combination of the bit stream from the rate control encoding unit and the stuffing bits from the stuffing control unit for thereby outputting them to the target bit calculation unit; a frame skip unit for outputting a frame skip signal according to the buffer occupied state signal from the buffering unit; and a control logic unit for controlling an encoding process of each of the above elements and determining whether or not the next input frame is encoded according to the frame skip signal from the frame skip unit.

摘要翻译： 一种用于实时视频通信的速率控制装置包括：初始化单元，用于根据传输速度和输入帧数量设置速率控制所需的初始值; 考虑到缓冲状态和传输速度的目标比特计算单元，用于获得目标编码比特数，最大允许比特数和最小允许比特数; 速率控制和编码器单元，用于使用最大允许位数和最小允许位数执行速率控制和编码; 填充控制单元，用于将来自速率控制和编码单元的比特流的大小与来自目标比特计算单元的目标编号比特数进行比较，从而输出填充比特; 缓冲单元，用于存储来自速率控制编码单元的比特流和来自填充控制单元的填充比特的组合，从而将它们输出到目标比特计算单元; 帧跳过单元，用于根据来自缓冲单元的缓冲器占用状态信号输出帧跳过信号; 以及控制逻辑单元，用于控制上述每个元素的编码处理，并根据来自帧跳过单元的帧跳过信号确定下一个输入帧是否被编码。

公开(公告)号：US06421384B1

公开(公告)日：2002-07-16

申请号：US09180906

申请日：1998-11-17

申请人： Jae-Won Chung ,  Cheol-Soo Park ,  Joo-Hee Moon ,  Jae-Kyoon Kim

发明人： Jae-Won Chung ,  Cheol-Soo Park ,  Joo-Hee Moon ,  Jae-Kyoon Kim

IPC分类号： H04N718

CPC分类号： H04N5/145 ,  H04N19/107 ,  H04N19/54 ,  H04N19/543 ,  H04N19/61

摘要： A method and system for contour-based motion estimation for use with video images. The invention establishes corresponding contours (404, 414) in two images (402, 412) in a sequence of images, determines a motion vector which includes how the first contour (404) moved to become the second contour (414), and transmits the motion vector of the contour (414) in order to permit accurate display of the second video image (412). Preferably, boundary lines are removed from the contours before a comparison is made. The invention is computationally efficient and economical from a data transmission point of view, while enabling the production of accurate image.

摘要翻译： 一种用于与视频图像一起使用的基于轮廓的运动估计的方法和系统。 本发明在图像序列中的两个图像（402,412）中建立对应的轮廓（404,414），确定包括第一轮廓（404）如何移动成为第二轮廓（414）的运动矢量，并且传送 轮廓（414）的运动矢量，以便准确地显示第二视频图像（412）。 优选地，在进行比较之前，从轮廓中移除边界线。 从数据传输的观点来看，本发明具有计算效率和经济性，同时能够制作准确的图像。

公开(公告)号：US06377622B1

公开(公告)日：2002-04-23

申请号：US09109959

申请日：1998-07-02

申请人： Jong-Deuk Kim ,  Sung-Moon Chun ,  Jae-Won Chung ,  Joo-Hee Moon

发明人： Jong-Deuk Kim ,  Sung-Moon Chun ,  Jae-Won Chung ,  Joo-Hee Moon

IPC分类号： H04B166

CPC分类号： G06T9/20

摘要： A plurality of layers having other resolution are coded in order to encode scalably shape information. A base layer having the lower resolution is coded and transmitted to a decoder, and an enhancement layer is coded by employing a scan interleaving method from the base layer. A scan order of vertical and horizontal scannings is decided according to a generation frequency of TSD (transitional sample data) and ESD (exceptional sample data) and the number of coding bits on the base layer, or a type of boundary lines on images. When the scan order is decided, additional information indicating the scan order is transmitted to the decoder. The base layer is also coded and transmitted to the decoder. In case that the scan order is decided according to the horizontal and vertical of the boundary lines on an image of the base layer, it is no need to transmit the additional information indicating the scan order on the received base layer and execute the decoding in the same order as the coded scan order.

摘要翻译： 编码具有其他分辨率的多个层以便对可缩放的形状信息进行编码。 具有较低分辨率的基本层被编码并传输到解码器，并且通过采用来自基本层的扫描交织方法对增强层进行编码。 垂直和水平扫描的扫描顺序根据TSD（过渡采样数据）和ESD（异常采样数据）的生成频率以及基本层上的编码位数或图像上的边界线的类型来确定。 当决定扫描顺序时，向解码器发送指示扫描顺序的附加信息。 基本层也被编码并传送到解码器。 在根据基层的图像上的边界线的水平和垂直方向决定扫描顺序的情况下，不需要在接收的基础层上发送指示扫描顺序的附加信息，并且在 与编码扫描顺序相同的顺序。

公开(公告)号：US5799109A

公开(公告)日：1998-08-25

申请号：US478558

申请日：1995-06-07

申请人： Jae-Won Chung ,  Jin-Hak Lee ,  Joo-Hee Moon ,  Jae-Kyoon Kim

发明人： Jae-Won Chung ,  Jin-Hak Lee ,  Joo-Hee Moon ,  Jae-Kyoon Kim

IPC分类号： G06T9/00 ,  G06T9/20 ,  H04N7/26 ,  G06K9/00

CPC分类号： G06T9/20 ,  H04N19/20

摘要： An object-by shape information compression apparatus and a method thereof, which includes a motion compensation prediction circuit provided for motion-compensation-predicting a shape information of a current fame using a shape information of a previous frame and a motion information of a current frame; a subtraction circuit provided for computing a prediction error region by subtracting a shape information predicted by the motion compensation prediction circuit and a current motion region; a threshold operation circuit provided for determining a transfer and disconnection of an information in accordance with time by threshold-operating an isolated prediction error region obtained by the subtraction circuit; a contour prediction circuit provided for compression-coding a shape information by predicting a contour in a prediction error region obtained by the threshold operation circuit; a contour reconstruction circuit provided for reconstructing an isolated prediction error region from a contour coded by the contour prediction circuit; and an addition circuit provided for adding an isolated prediction error region obtained by the contour reconstruction circuit and a shape information of a motion-compensated and -predicted current frame.

摘要翻译： 一种对象形状信息压缩装置及其方法，包括：运动补偿预测电路，其使用前一帧的形状信息和当前帧的运动信息来运动补偿预测当前声望的形状信息 ; 减法电路，用于通过减去由运动补偿预测电路预测的形状信息和当前运动区域来计算预测误差区域; 阈值操作电路，用于通过阈值操作由减法电路获得的隔离预测误差区域来确定信息的传送和断开; 轮廓预测电路，用于通过预测由阈值运算电路获得的预测误差区域中的轮廓来对形状信息进行压缩编码; 轮廓重建电路，用于从由轮廓预测电路编码的轮廓重构孤立的预测误差区域; 以及加法电路，用于将通过轮廓重建电路获得的隔离预测误差区域和运动补偿和预测当前帧的形状信息相加。

公开(公告)号：US5926572A

公开(公告)日：1999-07-20

申请号：US740299

申请日：1996-10-25

申请人： Jae-Kyoon Kim ,  Jae-Won Chung ,  Kwang-Hoon Park ,  Joo-Hee Moon ,  Ji-Heon Kwen

发明人： Jae-Kyoon Kim ,  Jae-Won Chung ,  Kwang-Hoon Park ,  Joo-Hee Moon ,  Ji-Heon Kwen

IPC分类号： G06T9/00 ,  H03M7/30 ,  H04N19/00 ,  H04N19/107 ,  H04N19/136 ,  H04N19/172 ,  H04N19/189 ,  H04N19/20 ,  H04N19/503 ,  H04N19/51 ,  H04N19/85 ,  G06K9/36

CPC分类号： G06T9/004 ,  G06T9/20 ,  H04N19/20

摘要： A method for determining a coding type and a coding mode for object shape coding is disclosed. A coding mode is determined according to the characteristic of an object and shape, and the shape is coded by varying a coding method according to the determined coding mode.

摘要翻译： 公开了一种用于确定对象形状编码的编码类型和编码模式的方法。 根据对象和形状的特性来确定编码模式，并且通过根据确定的编码模式改变编码方法对形状进行编码。