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    Video coding method and apparatus
    51.
    发明申请
    Video coding method and apparatus 审中-公开
    视频编码方法及装置

    公开(公告)号：US20060088222A1

    公开(公告)日：2006-04-27

    申请号：US11247147

    申请日：2005-10-12

    Applicant: Woo-jin Han ,  Bae-keun Lee

    Inventor： Woo-jin Han ,  Bae-keun Lee

    IPC: G06K9/36

    CPC classification number: H04N19/00 ,  H04N19/122 ,  H04N19/154 ,  H04N19/176 ,  H04N19/186 ,  H04N19/635

    Abstract: A video coding method and apparatus are provided for improving compression efficiency or video/image quality by selecting a spatial transform method suitable for characteristics of an incoming video/image during video/image compression. The video coding apparatus includes a temporal transform module for removing temporal redundancy in an input frame to generate a residual frame, a wavelet transform module for performing wavelet transform on the residual frame to generate a wavelet coefficient, a Discrete Cosine Transform (DCT) module for performing DCT on the wavelet coefficient of each DCT block to create a DCT coefficient, and a quantization module for quantizing the DCT coefficient.

    Abstract translation: 提供一种用于通过在视频/图像压缩期间选择适合于输入视频/图像的特性的空间变换方法来提高压缩效率或视频/图像质量的视频编码方法和装置。 视频编码装置包括用于消除输入帧中的时间冗余以产生残余帧的时间变换模块，用于对残差帧执行小波变换以生成小波系数的小波变换模块，用于产生小波系数的离散余弦变换（DCT）模块 对每个DCT块的小波系数执行DCT以产生DCT系数，以及用于量化DCT系数的量化模块。

    Method and apparatus for effectively encoding multi-layered motion vectors
    52.
    发明申请
    Method and apparatus for effectively encoding multi-layered motion vectors 审中-公开
    用于有效地编码多层运动矢量的方法和装置

    公开(公告)号：US20060088102A1

    公开(公告)日：2006-04-27

    申请号：US11254642

    申请日：2005-10-21

    Applicant: Kyo-hyuk Lee ,  Sang-chang Cha ,  Woo-jin Han

    Inventor： Kyo-hyuk Lee ,  Sang-chang Cha ,  Woo-jin Han

    IPC: H04N11/02 ,  H04N7/12 ,  H04N11/04 ,  H04B1/66

    CPC classification number: H04N5/145 ,  H04N19/102 ,  H04N19/139 ,  H04N19/187 ,  H04N19/31 ,  H04N19/33 ,  H04N19/51 ,  H04N19/52 ,  H04N19/577 ,  H04N19/59 ,  H04N19/61 ,  H04N19/62 ,  H04N19/649

    Abstract: An apparatus and method for improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhanced layer from a motion vector in a base layer in a video coding method using a multi-layer structure are provided. The method includes obtaining a motion vector in a mother frame of a base layer that is temporally closest to an unsynchronized frame of a current layer, obtaining a predicted motion vector from the motion vector in the mother frame considering the referencing direction in the mother frame and in the unsynchronized frame and distances between the mother frame and a reference frame and between the unsynchronized frame and a reference frame, generating a residual between the motion vector in the unsynchronized frame and the predicted motion vector, and encoding the motion vector in the mother frame and the residual.

    Abstract translation: 提供一种用于通过使用多层结构的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来提高运动矢量的压缩效率的装置和方法。 该方法包括获得在时间上最接近当前层的非同步帧的基本层的母帧中的运动矢量，从母帧中的运动矢量中获取预测运动矢量，考虑母帧中的参考方向， 在母帧与参考帧之间以及非同步帧与参考帧之间的非同步帧和距离之间，产生非同步帧中的运动矢量与预测运动矢量之间的残差，并对母帧中的运动矢量进行编码 和剩余。

    Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer
    53.
    发明申请
    Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer 有权
    基于多层视频编码器有效压缩运动矢量的方法和装置

    公开(公告)号：US20060088101A1

    公开(公告)日：2006-04-27

    申请号：US11254051

    申请日：2005-10-20

    Applicant: Woo-jin Han ,  Kyo-hyuk Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Bae-keun Lee ,  Ho-jin Ha

    Inventor： Woo-jin Han ,  Kyo-hyuk Lee ,  Jae-young Lee ,  Sang-chang Cha ,  Bae-keun Lee ,  Ho-jin Ha

    IPC: H04N11/02 ,  H04N7/12 ,  H04B1/66 ,  H04N11/04

    CPC classification number: H04N19/577 ,  H04N19/31 ,  H04N19/51 ,  H04N19/517

    Abstract: A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.

    Abstract translation: 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量，从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量，第二帧速率大于 第一帧速率，如果在相同时刻没有基本层帧的情况下，通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测的运动矢量 位置作为第一增强层帧，并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差，以及所获得的基本层中的运动矢量。

    Method and apparatus for predecoding and decoding bitstream including base layer
    54.
    发明申请
    Method and apparatus for predecoding and decoding bitstream including base layer 有权
    用于对包括基本层的比特流进行预解码和解码的方法和装置

    公开(公告)号：US20060013300A1

    公开(公告)日：2006-01-19

    申请号：US11180634

    申请日：2005-07-14

    Applicant: Woo-jin Han

    Inventor： Woo-jin Han

    IPC: H04N11/04 ,  H04B1/66 ,  H04N11/02 ,  H04N7/12

    CPC classification number: H04N19/615 ,  H04N19/13 ,  H04N19/31 ,  H04N19/61 ,  H04N19/63 ,  H04N19/64 ,  H04N19/70

    Abstract: A method and apparatus for extracting a higher quality video stream for a given bit-rate by replacing a specific frame by a base layer frame at a predecoder are provided. A predecoding method performed by the predecoder includes selecting a mode by determining frames to be skipped according to a predetermined criterion among frames located at positions where the base layer exists, and extracting a portion of the bitstream according to the selected mode and extraction conditions.

    Abstract translation: 提供了一种用于通过在预解码器处由基本层帧替换特定帧来为给定比特率提取较高质量视频流的方法和装置。 由预解码器执行的预解码方法包括：通过根据位于基层存在的位置的帧中的预定标准来确定要跳过的帧来选择模式，并且根据所选择的模式和提取条件提取比特流的一部分。

    Method and apparatus for supporting motion scalability
    55.
    发明申请
    Method and apparatus for supporting motion scalability 审中-公开
    支持运动可伸缩性的方法和装置

    公开(公告)号：US20050226335A1

    公开(公告)日：2005-10-13

    申请号：US11104640

    申请日：2005-04-13

    Applicant: Bae-keun Lee ,  Sang-chang Cha ,  Ho-jin Ha ,  Woo-jin Han

    Inventor： Bae-keun Lee ,  Sang-chang Cha ,  Ho-jin Ha ,  Woo-jin Han

    IPC: H04N19/50 ,  H04N19/105 ,  H04N19/119 ,  H04N19/146 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/196 ,  H04N19/30 ,  H04N19/31 ,  H04N19/51 ,  H04N19/513 ,  H04N19/523 ,  H04N19/53 ,  H04N19/59 ,  H04N19/60 ,  H04N19/625 ,  H04N19/63 ,  H04N19/80 ,  H04N19/91 ,  H04N7/12

    CPC classification number: H04N19/615 ,  H04N19/13 ,  H04N19/147 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/56 ,  H04N19/567 ,  H04N19/61 ,  H04N19/63

    Abstract: A method and apparatus for supporting scalability for motion vectors in scalable video coding are provided. The motion estimation apparatus includes a motion estimation module searching for a variable block size and a motion vector that minimize a cost function for each layer according to predetermined pixel accuracy, a sampling module upsampling an original frame when the pixel accuracy is less than a pixel size, and before searching for a motion vector in a layer having a lower resolution than the original frame downsampling the original frame into the low resolution, a motion residual module calculating a residual between motion vectors found in the respective layers, and a rearrangement module rearranging the residuals between the found motion vectors and the found variable block size information using significance obtained from a searched lower layer. Accordingly, true motion scalability can be achieved to improve adaptability to changing network circumstances.

    Abstract translation: 提供了一种用于支持可伸缩视频编码中的运动矢量的可扩展性的方法和装置。 运动估计装置包括：运动估计模块，用于根据预定的像素精度搜索可变块大小和每个层的成本函数最小化的运动矢量;当像素精度小于像素尺寸时，采样模块对原始帧进行上采样 并且在将具有比原始帧低的原始帧的分辨率低的层的运动矢量搜索到低分辨率之前，运动残差模块计算在各个层中找到的运动矢量之间的残差，以及重新排列模块 找到的运动矢量之间的残差和使用从搜索到的下层获得的显着性的找到的可变块大小信息。 因此，可以实现真实的运动可伸缩性，以提高对网络环境变化的适应性。

    Apparatus and method for scalable video coding providing scalability in encoder part
    56.
    发明申请
    Apparatus and method for scalable video coding providing scalability in encoder part 审中-公开
    用于可缩放视频编码的装置和方法，其在编码器部分中提供可扩展性

    公开(公告)号：US20050169379A1

    公开(公告)日：2005-08-04

    申请号：US11043929

    申请日：2005-01-28

    Applicant: Sung-chol Shin ,  Woo-jin Han

    Inventor： Sung-chol Shin ,  Woo-jin Han

    IPC: H04N7/24 ,  H04N7/12 ,  H04N7/26 ,  H04N7/36

    CPC classification number: H04N19/615 ,  H04N19/13 ,  H04N19/156 ,  H04N19/31 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70

    Abstract: A method and apparatus for scalable encoding providing scalability in an encoder. The scalable video encoding apparatus includes a mode selector that determines a temporal filtering order of a frame and a predetermined time limit as a condition for determining to which frame temporal filtering is to be performed, and a temporal filter which performs motion compensation and temporal filtering, according to the temporal filtering order determined in the mode selector, on frames that satisfy the above-described condition. According to the method and apparatus, since scalability is provided in the encoder, stability in the operation of real-time, bidirectional video streaming applications, such as video conferencing, can be ensured.

    Abstract translation: 一种用于在编码器中提供可扩展性的可伸缩编码的方法和装置。 可分级视频编码装置包括模式选择器，其确定帧的时间滤波顺序和预定时间限制作为用于确定要对哪个帧进行时间滤波的条件;以及时间滤波器，其执行运动补偿和时间滤波， 根据在模式选择器中确定的时间滤波顺序，在满足上述条件的帧上。 根据该方法和装置，由于在编码器中提供了可扩展性，因此可以确保视频会议等实时双向视频流应用的运行的稳定性。

    Bit-rate control method and apparatus for normalizing visual quality
    57.
    发明申请
    Bit-rate control method and apparatus for normalizing visual quality 审中-公开
    用于使视觉质量正常化的比特率控制方法和装置

    公开(公告)号：US20050084015A1

    公开(公告)日：2005-04-21

    申请号：US10968491

    申请日：2004-10-20

    Applicant: Woo-jin Han ,  Bae-keun Lee ,  Ho-jin Ha

    Inventor： Woo-jin Han ,  Bae-keun Lee ,  Ho-jin Ha

    IPC: H04N19/94 ,  H04N7/12 ,  H04N7/173 ,  H04N7/24

    CPC classification number: H04N7/17318 ,  H04N19/115 ,  H04N19/149 ,  H04N21/234327 ,  H04N21/6377 ,  H04N21/658

    Abstract: A scalable video codec includes an encoder that encodes an original moving picture; a rate control unit that allocates an optimal amount of bits for each coding unit based on a bit-rate desired by a user; a pre-decoder that receives a bit-stream and extracts a bit-stream having an appropriate amount of bits; and a decoder that decodes image sequences of the moving picture from the extracted bit-stream, so as to reconstruct the original moving picture. In particular, the present invention focuses on the operation performed in the rate control unit 340. The rate control unit operates a definition step of a bit-rate function available for use in the predecoder, a pre-summation step to thereby obtain the uniform visual quality, an approximation to determine the distortion function, and a normalization step to allow the total allocated bit-rates to be equal to a target bit-rate.

    Abstract translation: 可分级视频编解码器包括对原始运动图像进行编码的编码器; 速率控制单元，其基于用户期望的比特率为每个编码单元分配最佳的比特量; 接收比特流并提取具有适当位数的比特流的预解码器; 以及解码器，其从提取的比特流解码运动图像的图像序列，以便重构原始运动图像。 特别地，本发明着重于在速率控制单元340中执行的操作。 速率控制单元操作可用于预解码器的比特率函数的定义步骤，预先求和步骤，从而获得均匀的视觉质量，确定失真函数的近似值，以及允许总数的归一化步骤 分配的比特率等于目标比特率。

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