公开(公告)号：US20080013624A1

公开(公告)日：2008-01-17

申请号：US11777563

申请日：2007-07-13

Applicant: Woo-jin HAN

Inventor： Woo-jin HAN

IPC: H04B1/66 ,  H04N11/04

CPC classification number: H04N19/34 ,  H04N19/59 ,  H04N19/61

Abstract: A method of encoding a video signal of an FGS layer by reordering transform coefficients includes classifying transform coefficients of blocks in a current layer to be encoded into significant coefficients and refinement coefficients, reordering the significant coefficients and the refinement coefficients according to the classifications, and coding the reordered significant coefficients and refinement coefficients.

Abstract translation: 通过重新排序变换系数对FGS层的视频信号进行编码的方法包括将要编码的当前层中的块的变换系数分类为有效系数和细化系数，根据分类重新排序有效系数和细化系数，以及编码 重新排序的有效系数和细化系数。

公开(公告)号：US20070297518A1

公开(公告)日：2007-12-27

申请号：US11723862

申请日：2007-03-22

Applicant: Woo-jin Han ,  Bae-keun Lee ,  Tammy Lee ,  Kyo-hyuk Lee

Inventor： Woo-jin Han ,  Bae-keun Lee ,  Tammy Lee ,  Kyo-hyuk Lee

IPC: H04B1/66

CPC classification number: H04N19/184 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/30 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: The present invention relates to a video compression technology, and more particularly, to an effective flag-coding method and apparatus thereof by using a spatial correlation among various flags used to code a video frame. In order to accomplish the object, there is provided an apparatus for encoding a flag used to code a video frame composed of a plurality of blocks, the apparatus including a flag-assembling unit which collects flag values allotted for each block and produces a flag bit string, based on spatial correlation of the blocks, a maximum-run-determining unit which determines a maximum run of the flag bit string, and a converting unit which converts the bits included in the flag bit string into a codeword having a size no more than the maximum run by using a predetermined codeword table.

Abstract translation: 视频压缩技术技术领域本发明涉及一种视频压缩技术，更具体地说，涉及一种通过使用用于对视频帧进行编码的各种标志之间的空间相关性的有效标志编码方法及其装置。 为了实现该目的，提供了一种用于编码用于编码由多个块组成的视频帧的标志的装置，该装置包括标志组合单元，该标志组合单元收集为每个块分配的标志值，并产生标志位 字符串，基于所述块的空间相关性，确定所述标志位串的最大行程的最大运行确定单元，以及将包括在所述标志位串中的位转换为尺寸不大的码字的转换单元 比通过使用预定码字表的最大运行。

公开(公告)号：US20070133677A1

公开(公告)日：2007-06-14

申请号：US11637074

申请日：2006-12-12

Applicant: Woo-jin Han ,  Bae-keun Lee

Inventor： Woo-jin Han ,  Bae-keun Lee

IPC: H04B1/66 ,  H04N11/04

CPC classification number: H04N19/34 ,  H04N19/13 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/196 ,  H04N19/21 ,  H04N19/29 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/93

Abstract: A method and apparatus for encoding and decoding a video signal on a group basis is disclosed, in which blocks constituting a multi-layer video signal are coded. The method includes grouping every two or more blocks having symbols that have a value identical to a predetermined value, generating group-based symbols each indicating information about the grouped blocks, and coding the group-based symbols.

Abstract translation: 公开了以组为单位对视频信号进行编码和解码的方法和装置，其中构成多层视频信号的块被编码。 该方法包括对具有与预定值相同的符号的每两个或多个块进行分组，生成基于组的符号，每个符号表示关于分组的块的信息，以及对基于组的符号进行编码。

公开(公告)号：US20070086516A1

公开(公告)日：2007-04-19

申请号：US11476103

申请日：2006-06-28

Applicant: Bae-keun Lee ,  Woo-jin Han

Inventor： Bae-keun Lee ,  Woo-jin Han

IPC: H04B1/66 ,  H04N7/12

CPC classification number: H04N19/34 ,  H04N19/187 ,  H04N19/196 ,  H04N19/463 ,  H04N19/61

Abstract: A method and apparatus for efficiently encoding diverse flags being used in a multilayer-based scalable video codec, based on an inter-layer correlation. The encoding method includes judging whether flags of a current layer included in a specified unit area are all equal to flags of a base layer, setting a specified prediction flag according to the result of judgment, and if it is judged that the flags of the current layer are equal to the flags of the base layer, skipping the flags of the current layer and inserting the flags of the base layer and the prediction flag into a bitstream.

Abstract translation: 一种用于在基于层间相关性的基于多层的可伸缩视频编解码器中有效地编码各种标记的方法和装置。 编码方法包括：判断包含在指定单位区域中的当前层的标志是否全部等于基本层的标志，根据判断结果设定指定的预测标志，如果判断为当前的标志 层等于基本层的标志，跳过当前层的标志，并将基本层的标志和预测标记插入到比特流中。

公开(公告)号：US20070071088A1

公开(公告)日：2007-03-29

申请号：US11525912

申请日：2006-09-25

Applicant: Bae-keun Lee ,  Woo-jin Han

Inventor： Bae-keun Lee ,  Woo-jin Han

IPC: H04B1/66 ,  H04N11/04

CPC classification number: H04N19/33 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/30 ,  H04N19/39

Abstract: Methods and apparatuses for entropy encoding and decoding Fine-granularity Scalability (FGS) layer video data are provided. The encoding method includes extracting residual data between a first block and a second block in a layer lower than the FGS layer corresponding to the first block; obtaining transform coefficients; dividing the transform coefficients in the first block into at least two subblocks; calculating the length of a prefix of first coefficients in the subblocks; and combining the prefix with a suffix used to distinguish the first coefficients; and VLC encoding the first coefficients. The encoding apparatus includes a subblock divider, a prefix generator, and a significant coefficient encoding unit. The decoding method includes calculating a range of a transform coefficient using a length of a prefix of the transform coefficient; extracting a value of the transform coefficient; VLC decoding the value; and combining first and second subblocks having the decoded coefficients.

Abstract translation: 提供熵编码和解码的方法和装置细粒度可扩展性（FGS）层视频数据。 所述编码方法包括：在与所述第一块相对应的所述FGS层以下的层中提取第一块与第二块之间的残差数据; 获得变换系数; 将第一块中的变换系数划分为至少两个子块; 计算子块中第一系数的前缀的长度; 以及将前缀与用于区分第一系数的后缀组合; 和VLC编码第一系数。 编码装置包括子块分割器，前缀生成器和有效系数编码单元。 解码方法包括使用变换系数的前缀的长度来计算变换系数的范围; 提取变换系数的值; VLC解码值; 以及组合具有解码系数的第一和第二子块。

公开(公告)号：US20070025439A1

公开(公告)日：2007-02-01

申请号：US11490199

申请日：2006-07-21

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

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

IPC: H04B1/66 ,  H04N11/04

CPC classification number: H04B1/662 ,  H04N19/11 ,  H04N19/136 ,  H04N19/176 ,  H04N19/187 ,  H04N19/33 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

Abstract: A method and apparatus for encoding and decoding a video signal according to directional intra-residual prediction. The video encoding method of the present invention includes calculating first residual data by performing directional intra-prediction on a first block of a base layer with reference to a second block of the base layer, calculating second residual data by performing directional intra-prediction on a third block of an enhancement layer that corresponds to the first block of the base layer with reference to a fourth block of the enhancement layer that corresponds to the second block of the base layer, and encoding the third block according to the directional intra-residual prediction by obtaining third residual data that is a difference between the first residual data and the second residual data.

Abstract translation: 一种根据定向残差预测对视频信号进行编码和解码的方法和装置。 本发明的视频编码方法包括通过参照基本层的第二块对基本层的第一块进行定向帧内预测来计算第一残差数据，通过对基本层进行定向帧内预测来计算第二残差数据 增强层的第三块，其对应于基本层的第一块，参考对应于基本层的第二块的增强层的第四块，并且根据定向残差预测对第三块进行编码 通过获得作为第一残差数据和第二残差数据之间的差的第三残差数据。

公开(公告)号：US20060291562A1

公开(公告)日：2006-12-28

申请号：US11454908

申请日：2006-06-19

Applicant: Kyo-hyuk Lee ,  Woo-jin Han ,  Bae-keun Lee

Inventor： Kyo-hyuk Lee ,  Woo-jin Han ,  Bae-keun Lee

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

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46

Abstract: A method and apparatus for efficiently encoding a plurality of layers using inter-layer information in a multi-layer based video codec are disclosed. The video encoding method includes operations of reading the weighting factors of one layer; performing motion compensation on reference frames for the current frame based on a motion vector; generating a predicted frame for the current frame by acquiring a weighted sum of the motion-compensated reference frames using the read weighting factors; and encoding the difference between the current frame and the predicted frame.

Abstract translation: 公开了一种使用多层视频编解码器中的层间信息对多层进行有效编码的方法和装置。 视频编码方法包括读取一层加权因子的操作; 基于运动矢量对当前帧的参考帧执行运动补偿; 通过使用读取的加权因子获取运动补偿参考帧的加权和来产生当前帧的预测帧; 并对当前帧和预测帧之间的差进行编码。

公开(公告)号：US20060250520A1

公开(公告)日：2006-11-09

申请号：US11402842

申请日：2006-04-13

Applicant: Woo-Jin Han ,  Bae-Keun Lee

Inventor： Woo-Jin Han ,  Bae-Keun Lee

IPC: H04N11/02

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

Abstract: A method of reducing a mismatch between an encoder and a decoder in motion compensated temporal filtering, and a video coding method and apparatus using the same. The video coding method includes dividing input frames into one final low-frequency frame and at least one high-frequency frame by performing motion compensated temporal filtering on the input frames; encoding the final low-frequency frame and decoding the encoded final low-frequency frame; re-estimating the at least one high-frequency frame using the decoded final low-frequency frame; and encoding the re-estimated high-frequency frame.

Abstract translation: 一种在运动补偿时间滤波中减少编码器与解码器之间的失配的方法，以及使用该滤波器的视频编码方法和装置。 视频编码方法包括：通过对输入帧进行运动补偿时间滤波，将输入帧划分成一个最终低频帧和至少一个高频帧; 编码最终的低频帧并解码编码的最终低频帧; 使用解码的最终低频帧重新估计至少一个高频帧; 并对重新估计的高频帧进行编码。

公开(公告)号：US20060176957A1

公开(公告)日：2006-08-10

申请号：US11348316

申请日：2006-02-07

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

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

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

CPC classification number: H04N19/33 ,  H04N19/51 ,  H04N19/52

Abstract: A method of compressing a motion vector (MV) of a first macroblock when the region of a first lower layer corresponding to the first macroblock of a current layer frame does not have an MV is provided. The method includes interpolating the MV of a second macroblock to which the region belongs, based on the MV of at least one neighboring macroblock, and predicting the MV of the first macroblock using the interpolated MV.

Abstract translation: 提供了当与当前层框架的第一宏块对应的第一下层的区域不具有MV时，压缩第一宏块的运动矢量（MV）的方法。 该方法包括基于至少一个相邻宏块的MV来内插该区域所属的第二宏块的MV，并且使用内插MV来预测第一宏块的MV。

公开(公告)号：US20060165303A1

公开(公告)日：2006-07-27

申请号：US11336953

申请日：2006-01-23

Applicant: Sang-chang Cha ,  Woo-jin Han

Inventor： Sang-chang Cha ,  Woo-jin Han

IPC: G06K9/46

CPC classification number: H04N19/615 ,  H04N19/105 ,  H04N19/13 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/187 ,  H04N19/31 ,  H04N19/51 ,  H04N19/61 ,  H04N19/63

Abstract: A multi-layered video encoding method is provided wherein motion estimation is performed by using one of two frames of a lower layer temporally closest to an unsynchronized frame of a current layer as a reference frame. A virtual base layer frame at the same temporal location as that of the unsynchronized frame is generated using a motion vector obtained as a result of the motion estimation and the reference frame. The generated virtual base layer frame is subtracted from the unsynchronized frame to generate a difference, and the difference is encoded.

Abstract translation: 提供了一种多层视频编码方法，其中通过使用时间上最接近当前层的不同步帧的下层的两个帧中的一个作为参考帧来执行运动估计。 使用作为运动估计和参考帧的结果获得的运动矢量来生成与非同步帧相同的时间位置的虚拟基本层帧。 从非同步帧中减去生成的虚拟基本层帧以产生差异，并且对差异进行编码。