公开(公告)号：US20120039387A1

公开(公告)日：2012-02-16

申请号：US13235012

申请日：2011-09-16

Applicant: Ho-Jin HA ,  Sang-Chang Cha ,  Woo-Jin Han

Inventor： Ho-Jin HA ,  Sang-Chang Cha ,  Woo-Jin Han

IPC: H04N7/36

CPC classification number: H04N19/53 ,  H04N19/52

Abstract: A motion vector compression apparatus includes: a down-sampling module for down-sampling an original frame to have a size of a frame in each layer; a motion vector search module for obtaining a motion vector in which an error or a cost function is minimized with respect to the down-sampled frame; a reference vector generation module for generating a reference motion vector in a predetermined enhanced layer by means of a block of a lower layer corresponding to a predetermined block in the predetermined enhanced layer, and motion vectors in blocks around the block; and a motion difference module for calculating a difference between the obtained motion vector and the reference motion vector.

Abstract translation: 运动矢量压缩装置包括：下采样模块，用于对原始帧进行下采样以具有每层中的帧的大小; 运动矢量搜索模块，用于获得相对于下采样帧最小化误差或成本函数的运动矢量; 参考矢量生成模块，用于通过与预定增强层中的预定块相对应的下层的块和在块周围的块中的运动矢量来生成预定增强层中的参考运动矢量; 以及用于计算所获得的运动矢量和参考运动矢量之间的差的运动差分模块。

公开(公告)号：US08040950B2

公开(公告)日：2011-10-18

申请号：US11094201

申请日：2005-03-31

Applicant: Ho-Jin Ha ,  Sang-Chang Cha ,  Woo-Jin Han

Inventor： Ho-Jin Ha ,  Sang-Chang Cha ,  Woo-Jin Han

IPC: H04N7/12

CPC classification number: H04N19/53 ,  H04N19/52

Abstract: A method and an apparatus for elevating compression efficiency of a motion vector by effectively predicting a motion vector of an enhanced layer by means of a motion vector of a base layer in a video coding method employing a multi-layer structure are disclosed. A motion vector compression apparatus includes: a down-sampling module for down-sampling an original frame to have a size of a frame in each layer; a motion vector search module for obtaining a motion vector in which an error or a cost function is minimized with respect to the down-sampled frame; a reference vector generation module for generating a reference motion vector in a predetermined enhanced layer by means of a block of a lower layer corresponding to a predetermined block in the predetermined enhanced layer, and motion vectors in blocks around the block; and a motion difference module for calculating a difference between the obtained motion vector and the reference motion vector.

Abstract translation: 公开了一种通过在采用多层结构的视频编码方法中借助于基本层的运动矢量有效地预测增强层的运动矢量来提高运动矢量的压缩效率的方法和装置。 运动矢量压缩装置包括：下采样模块，用于对原始帧进行下采样以具有每层中的帧的大小; 运动矢量搜索模块，用于获得相对于下采样帧最小化误差或成本函数的运动矢量; 参考矢量生成模块，用于通过与预定增强层中的预定块相对应的下层的块和在块周围的块中的运动矢量来生成预定增强层中的参考运动矢量; 以及用于计算所获得的运动矢量和参考运动矢量之间的差的运动差分模块。

公开(公告)号：US20110231520A1

公开(公告)日：2011-09-22

申请号：US13051514

申请日：2011-03-18

Applicant: Ho-jin HA ,  Soon-back CHA ,  Ji-eun KEUM ,  O-hoon KWON ,  Hyung-tak CHOI ,  Sun-bal KIM

Inventor： Ho-jin HA ,  Soon-back CHA ,  Ji-eun KEUM ,  O-hoon KWON ,  Hyung-tak CHOI ,  Sun-bal KIM

IPC: G06F15/16

CPC classification number: H04L65/602 ,  H04L65/4084 ,  H04L65/604 ,  H04L65/607 ,  H04L65/80 ,  H04N21/23439 ,  H04N21/2353 ,  H04N21/2362 ,  H04N21/2402 ,  H04N21/6581 ,  H04N21/812 ,  H04N21/8456

Abstract: A streaming method and apparatus, in which information regarding a plurality of chapters of content is inserted into a media presentation description that includes information regarding a plurality of media data generated by encoding the content so as to have different qualities, and then, streaming is performed based on the information.

Abstract translation: 一种流传输方法和装置，其中关于多个内容段的信息被插入到媒体呈现描述中，该媒体呈现描述包括关于通过对内容进行编码而产生的多个媒体数据的信息，以便具有不同的质量，然后执行流 根据信息。

公开(公告)号：US20110119395A1

公开(公告)日：2011-05-19

申请号：US12945545

申请日：2010-11-12

Applicant: Ho-jin HA ,  O-hoon KWON ,  Sung-bin IM ,  Ji-Eun KEUM ,  Guanhua ZHANG ,  Hyung-tak CHOI ,  Sun-bal KIM

Inventor： Ho-jin HA ,  O-hoon KWON ,  Sung-bin IM ,  Ji-Eun KEUM ,  Guanhua ZHANG ,  Hyung-tak CHOI ,  Sun-bal KIM

IPC: G06F15/16

Abstract: A method and apparatus for adaptively transmitting and receiving media data to a streaming environment by segmenting into segments a plurality of media data, which is generated by encoding content to have different qualities.

Abstract translation: 一种用于通过将多个媒体数据分割成多个媒体数据来自适应地向流媒体环境发送和接收媒体数据的方法和装置，所述媒体数据是通过对内容进行编码而具有不同的质量而生成的。

公开(公告)号：US20110110432A1

公开(公告)日：2011-05-12

申请号：US13005990

申请日：2011-01-13

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: H04N7/32

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存在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。

公开(公告)号：US07225123B2

公开(公告)日：2007-05-29

申请号：US10367997

申请日：2003-02-19

Applicant: Ho-jin Ha

Inventor： Ho-jin Ha

IPC: G10L11/00

CPC classification number: G10L19/0216

Abstract: An audio compression method using wavelet packet transform (WPT) in MPEG1 layer 3 (hereinafter referred to as “MP3”) and a system thereof are provided. The method comprises calculating perceptual energy by analyzing audio samples which are input based on a psychoacoustic model; according to comparison of the level of the calculated perceptual energy with a threshold, selectively determining a modified DCT (MDCT) processing window and a wavelet packet transform (WPT) processing window; by processing audio samples corresponding to the scopes of the determined windows in the MDCT and WPT, converting the audio samples into data on frequency domains; and quantizing the processed data on the frequency domains according to the number of assigned bits.

Abstract translation: 提供了使用MPEG1层3中的小波包变换（WPT）的音频压缩方法（以下称为“MP3”）及其系统。 该方法包括通过分析基于心理声学模型输入的音频样本来计算感知能量; 根据计算的感知能量与阈值的比较，选择性地确定修正的DCT（MDCT）处理窗口和小波包变换（WPT）处理窗口; 通过处理与MDCT和WPT中确定的窗口的范围相对应的音频样本，将音频样本转换成频域上的数据; 并根据分配的位的数量量化频域上的处理数据。

公开(公告)号：US20070025448A1

公开(公告)日：2007-02-01

申请号：US11483646

申请日：2006-07-11

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

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

IPC: H04N11/04 ,  H04B1/66

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61

Abstract: Deblocking filter used in a video encoder/decoder based on a multilayer. In deciding a deblocking filter strength when performing a deblocking filtering with respect to a boundary between a current block coded by an intra-BL mode and its neighboring block, it is determined whether the current block or the neighboring block has coefficients. The filter strength is decided as a first filter strength if it is determined that the current block or the neighboring block has the coefficients, and the filter strength is decided as a second filter strength if it is determined that the current block or the neighboring block does not have the coefficients. The first filter strength is greater than the second filter strength.

Abstract translation: 基于多层的视频编码器/解码器中使用的去块滤波器。 在对由BL模式编码的当前块与其相邻块之间的边界执行解块滤波时，决定解块滤波器强度时，确定当前块或相邻块是否具有系数。 如果确定当前块或相邻块具有系数，则将滤波器强度确定为第一滤波器强度，并且如果确定当前块或相邻块确定了滤波器强度，则将滤波器强度确定为第二滤波器强度 没有系数。 第一过滤强度大于第二过滤强度。

公开(公告)号：US20060104354A1

公开(公告)日：2006-05-18

申请号：US11271984

申请日：2005-11-14

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

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

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

CPC classification number: H04N19/33 ,  H04N19/103 ,  H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/196 ,  H04N19/463

Abstract: A video coding method using a multi-layer structure, and more particularly, a method and apparatus for facilitating a search for an intra-prediction mode in an upper layer using an intra-prediction mode in a lower layer while efficiently and compressively encoding the searched intra-prediction mode are provided. The intra-prediction method includes searching for an optimum prediction mode of a current block among a predetermined number of intra-prediction modes, and obtaining a directional difference between the searched optimum prediction mode and an optimum prediction mode of a lower layer block corresponding to the current block.

Abstract translation: 一种使用多层结构的视频编码方法，更具体地说，涉及一种在下层中使用帧内预测模式促进对上层内帧内预测模式的搜索的方法和装置，同时有效和​​压缩编码搜索到的 提供帧内预测模式。 帧内预测方法包括在预定数量的帧内预测模式中搜索当前块的最佳预测模式，并且获得所搜索的最佳预测模式与对应于所述帧内预测模式的下层块的最佳预测模式之间的方向差 当前块。

公开(公告)号：US20060013313A1

公开(公告)日：2006-01-19

申请号：US11181858

申请日：2005-07-15

Applicant: Woo-jin Han ,  Ho-jin Ha

Inventor： Woo-jin Han ,  Ho-jin Ha

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

CPC classification number: H04N19/615 ,  H04N19/109 ,  H04N19/11 ,  H04N19/13 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/187 ,  H04N19/19 ,  H04N19/31 ,  H04N19/547 ,  H04N19/577 ,  H04N19/587 ,  H04N19/59 ,  H04N19/61 ,  H04N19/63

Abstract: A method of more efficiently conducting temporal filtering in a scalable video codec by use of a base-layer is provided. The method of efficiently compressing frames at higher layers by use of a base-layer in a multilayer-based video coding method includes (a) generating a base-layer frame from an input original video sequence, having the same temporal position as a first higher layer frame, (b) upsampling the base-layer frame to have the resolution of a higher layer frame, and (c) removing redundancy of the first higher layer frame on a block basis by referencing a second higher layer frame having a different temporal position from the first higher layer frame and the upsampled base-layer frame.

Abstract translation: 提供了一种通过使用基层在可伸缩视频编解码器中更有效地进行时间滤波的方法。 在基于多层的视频编码方法中通过使用基层高效地压缩帧的方法包括：（a）从输入的原始视频序列生成具有与第一高的相同的时间位置的基本层帧 （b）对基层帧进行上采样以具有较高层帧的分辨率，以及（c）通过参考具有不同时间位置的第二较高层帧来消除块上的第一较高层帧的冗余 从第一高层帧和上采样的基层帧。

公开(公告)号：US20050047508A1

公开(公告)日：2005-03-03

申请号：US10924825

申请日：2004-08-25

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

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

IPC: H04N7/12 ,  H04N7/26 ,  H04N7/32

CPC classification number: H04N19/615 ,  H04N19/103 ,  H04N19/122 ,  H04N19/13 ,  H04N19/139 ,  H04N19/61 ,  H04N19/63 ,  H04N19/635

Abstract: An adaptive interframe wavelet video coding method, a computer readable recording medium and system therefor are provided. The interframe wavelet video coding method includes (a) receiving a group-of-frames including a plurality of frames and determining a mode flag according to a predetermined procedure using motion vectors of boundary pixels, (b) temporally decomposing the frames included in the group-of-frames in predetermined directions in accordance with the determined mode flag, and (c) performing spatial transform and quantization on the frames obtained by performing step (b), thereby generating a bitstream. Since an appropriate temporal filtering is performed in accordance with a boundary condition, efficiency of interframe wavelet video coding is increased.

Abstract translation: 提供一种自适应帧间小波视频编码方法，一种计算机可读记录介质及其系统。 帧间小波视频编码方法包括：（a）接收包括多个帧的帧组，并使用边界像素的运动矢量根据预定的过程确定模式标志，（b）临时分解包括在组中的帧 （c）对通过执行步骤（b）获得的帧执行空间变换和量化，从而生成比特流。 由于根据边界条件执行适当的时间滤波，因此增加了帧间小波视频编码的效率。