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1. 发明申请

US20070019879A1 Dequantization method and apparatus, and video decoding method and apparatus using the dequantization method 审中-公开
标题翻译：去量化方法和装置，以及使用去量化方法的视频解码方法和装置
公开(公告)号：US20070019879A1
公开(公告)日：2007-01-25
申请号：US11487986
申请日：2006-07-18
申请人： Woo-Jin Han , Kyo-hyuk Lee , Sang-chang Cha , Bae-keun Lee
发明人： Woo-Jin Han , Kyo-hyuk Lee , Sang-chang Cha , Bae-keun Lee
IPC分类号： G06K9/00
CPC分类号： H04N19/44 , H04N19/126 , H04N19/136 , H04N19/61
摘要： A dequantization method and an apparatus in which restored values for original values are obtained by dequantizing quantization level values generated when the original values are quantized. The dequantization method includes updating a histogram by accumulating histogram counts for the quantization level values, estimating a distribution function of the original values based on the histogram, and obtaining the restored values for the quantization level values from the distribution function.
摘要翻译：逆量化方法和装置，其中通过对量化原始值时产生的量化级别值进行去量化来获得原始值的恢复值。逆量化方法包括通过累积量化级值的直方图计数来更新直方图，基于直方图估计原始值的分布函数，以及从分布函数获得量化级值的恢复值。

2. 发明申请

US20060165302A1 Method of multi-layer based scalable video encoding and decoding and apparatus for the same 审中-公开
标题翻译：多层次可分级视频编解码方法及其设备
公开(公告)号：US20060165302A1
公开(公告)日：2006-07-27
申请号：US11336826
申请日：2006-01-23
申请人： Woo-Jin Han , Sang-Chang Cha , Bae-Keun Lee , Ho-Jin Ha
发明人： Woo-Jin Han , Sang-Chang Cha , Bae-Keun Lee , Ho-Jin Ha
IPC分类号： G06K9/46
CPC分类号： H04N19/615 , H04N19/13 , H04N19/31 , H04N19/513 , H04N19/53 , H04N19/61 , H04N19/63
摘要： A method of multi-layer based scalable video encoding and decoding and an apparatus for the same are disclosed. The encoding method includes the steps of estimating motion between a base layer frame that is placed at a temporal location closest to a current frame of an enhancement layer, and a frame that is backwardly adjacent to the base layer frame to acquire a motion vector, generating a residual image by subtracting the backwardly adjacent frame from the base layer frame, generating a virtual forward reference frame using the motion vector, the residual image and the base layer frame, and generating a predicted frame with respect to the current frame using the virtual forward reference frame, and encoding the difference between the current frame and the predicted frame.
摘要翻译：公开了一种基于多层的可分级视频编码和解码方法及其装置。编码方法包括以下步骤：估计位于最靠近增强层的当前帧的时间位置的基本层帧与后向邻近基本帧帧的帧以获取运动矢量之间的运动，生成通过从基本层帧减去后向相邻帧的残差图像，使用运动矢量，残差图像和基本层帧生成虚拟正向参考帧，并且使用虚拟向前生成关于当前帧的预测帧参考帧，并对当前帧与预测帧之间的差进行编码。

3. 发明申请

US20060083302A1 Method and apparatus for predecoding hybrid bitstream 有权
标题翻译：混合比特流预解码的方法和装置
公开(公告)号：US20060083302A1
公开(公告)日：2006-04-20
申请号：US11251869
申请日：2005-10-18
申请人： Woo-Jin Han , Kyo-hyuk Lee , Bae-keun Lee , Jae-young Lee , Sang-chang Cha , Ho-Jin Ha
发明人： Woo-Jin Han , Kyo-hyuk Lee , Bae-keun Lee , Jae-young Lee , Sang-chang Cha , Ho-Jin Ha
IPC分类号： H04N7/12 , H04B1/66 , H04N11/02 , H04N11/04
CPC分类号： H04N19/615 , H04N19/115 , H04N19/117 , H04N19/127 , H04N19/13 , H04N19/132 , H04N19/136 , H04N19/149 , H04N19/15 , H04N19/152 , H04N19/154 , H04N19/162 , H04N19/164 , H04N19/172 , H04N19/177 , H04N19/187 , H04N19/31 , H04N19/34 , H04N19/36 , H04N19/46 , H04N19/517 , H04N19/577 , H04N19/587 , H04N19/59 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/86
摘要： A method and apparatus for efficiently predecoding a hybrid bitstream generated by a plurality of coding schemes are provided. The method includes obtaining a first bit-rate for a boundary between the lower layer bitstream and the upper layer bitstream and a second bit-rate for a boundary between motion information and texture information of the upper layer bitstream from the input hybrid bitstream, determining the target bit-rate according to variable network circumstances, and when the target bit-rate is between the first and second bit-rates, skipping the motion information of the upper layer bitstream and truncating all bits of the texture information of the upper layer bitstream from the tail, except bits corresponding to the difference between the target bit-rate and the first bit-rate.
摘要翻译：提供了一种用于有效地预编码由多个编码方案产生的混合比特流的方法和装置。该方法包括从输入的混合比特流获得用于下层比特流和上层比特流之间的边界的第一比特率和用于运动信息和上层比特流的纹理信息之间的边界的第二比特率，确定目标比特率根据可变网络情况，当目标比特率在第一和第二比特率之间时，跳过上层比特流的运动信息，并将上层比特流的纹理信息的所有比特从尾部，除了对应于目标比特率和第一比特率之间的差的比特。

4. 发明申请

US20050220190A1 Method and apparatus for effectively compressing motion vectors in multi-layer structure 有权
标题翻译：多层结构中有效压缩运动矢量的方法和装置
公开(公告)号：US20050220190A1
公开(公告)日：2005-10-06
申请号：US11094201
申请日：2005-03-31
申请人： Ho-Jin Ha , Sang-Chang Cha , Woo-Jin Han
发明人： Ho-Jin Ha , Sang-Chang Cha , Woo-Jin Han
IPC分类号： H04N7/32 , H04N7/12 , H04N7/26
CPC分类号： H04N19/53 , H04N19/52
摘要： 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.
摘要翻译：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。

5. 发明申请

US20120039387A1 METHOD AND APPARATUS FOR EFFECTIVELY COMPRESSING MOTION VECTORS IN MULTI-LAYER STRUCTURE 失效
标题翻译：在多层结构中有效压缩运动矢量的方法与装置
公开(公告)号：US20120039387A1
公开(公告)日：2012-02-16
申请号：US13235012
申请日：2011-09-16
申请人： Ho-Jin HA , Sang-Chang Cha , Woo-Jin Han
发明人： Ho-Jin HA , Sang-Chang Cha , Woo-Jin Han
IPC分类号： H04N7/36
CPC分类号： H04N19/53 , H04N19/52
摘要： 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.
摘要翻译：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。

6. 发明授权

US08040950B2 Method and apparatus for effectively compressing motion vectors in multi-layer structure 有权
标题翻译：多层结构中有效压缩运动矢量的方法和装置
公开(公告)号：US08040950B2
公开(公告)日：2011-10-18
申请号：US11094201
申请日：2005-03-31
申请人： Ho-Jin Ha , Sang-Chang Cha , Woo-Jin Han
发明人： Ho-Jin Ha , Sang-Chang Cha , Woo-Jin Han
IPC分类号： H04N7/12
CPC分类号： H04N19/53 , H04N19/52
摘要： 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.
摘要翻译：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。

7. 发明申请

US20060165301A1 Video coding method and apparatus for efficiently predicting unsynchronized frame 审中-公开
标题翻译：用于有效预测不同步帧的视频编码方法和装置
公开(公告)号：US20060165301A1
公开(公告)日：2006-07-27
申请号：US11336825
申请日：2006-01-23
申请人： Sang-Chang Cha , Woo-Jin Han
发明人： Sang-Chang Cha , Woo-Jin Han
IPC分类号： G06K9/46
CPC分类号： H04N19/59 , H04N19/105 , H04N19/187 , H04N19/30
摘要： A method of efficiently predicting a frame having no corresponding lower layer frame in video frames having a multi-layered structure, and a video coding apparatus using the prediction method is provided. In the video encoding method, motion estimation is performed by using a first frame of two frames of a lower layer temporally closest to an unsynchronized frame of a current layer as a reference frame. A residual frame between the reference frame and a second frame of the lower layer frames is obtained. 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, the reference frame, and the residual frame. The generated virtual base layer frame is subtracted from the unsynchronized frame to generate a difference, and the difference is encoded.
摘要翻译：提供一种有效地预测具有多层结构的视频帧中没有相应的下层帧的帧的方法，以及使用该预测方法的视频编码装置。在视频编码方法中，通过使用时间上最接近当前层的不同步帧的下层的两帧的第一帧作为参考帧来执行运动估计。获得参考帧和下层帧的第二帧之间的残留帧。使用作为运动估计，参考帧和剩余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。

8. 发明授权

US09317896B2 Image interpolation method and apparatus 有权
标题翻译：图像插值方法和装置
公开(公告)号：US09317896B2
公开(公告)日：2016-04-19
申请号：US13809364
申请日：2011-07-11
申请人： Tammy Lee , Woo-Jin Han
发明人： Tammy Lee , Woo-Jin Han
IPC分类号： G06T3/40 , H04N7/01 , H04N19/176 , H04N19/117 , H04N19/157 , H04N19/523 , H04N19/59
CPC分类号： G06T3/4007 , H04N7/0117 , H04N7/0135 , H04N19/117 , H04N19/157 , H04N19/176 , H04N19/523 , H04N19/59
摘要： An image interpolation method and apparatus are provided. The image interpolation method includes: selecting different interpolation filters according to locations of sub pixels between integer pixels; and generating sub pixel values at the locations of the sub pixels using the selected interpolation filters.
摘要翻译：提供了一种图像插值方法和装置。图像插值方法包括：根据整数像素之间的子像素的位置来选择不同的插值滤波器; 以及使用所选择的内插滤波器在子像素的位置处生成子像素值。

9. 发明申请

US20070121723A1 Scalable video coding method and apparatus based on multiple layers 审中-公开
标题翻译：基于多层次的可扩展视频编码方法和装置
公开(公告)号：US20070121723A1
公开(公告)日：2007-05-31
申请号：US11585981
申请日：2006-10-25
申请人： Manu Mathew , Kyo-hyuk Lee , Woo-Jin Han
发明人： Manu Mathew , Kyo-hyuk Lee , Woo-Jin Han
IPC分类号： H04N7/12 , H04N11/04
CPC分类号： H04N21/4126 , H04N19/105 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/187 , H04N19/31 , H04N19/34 , H04N19/587 , H04N19/59 , H04N19/61 , H04N19/70 , H04N21/234327 , H04N21/2383 , H04N21/25825 , H04N21/2662
摘要： A scalable video encoding method and apparatus based on a plurality of layers are provided. The video encoding method for encoding a video sequence having a plurality of layers includes coding a residual of a first block existing in a first layer among the plurality of layers; recording the coded residual of the first block on a non-discardable region of a bitstream, if a second block is coded using the first block, the second block existing in a second layer among the plurality of layers and corresponding to the first block; and recording the coded residual of the first block on a discardable region of the bitstream, if a second block is coded without using the first block.
摘要翻译：提供了一种基于多层的可分级视频编码方法和装置。用于对具有多个层的视频序列进行编码的视频编码方法包括对存在于多个层中的第一层中的第一块的残差进行编码; 如果使用所述第一块对所述第二块进行编码，则所述第二块存在于所述多个层中的第二层中并对应于所述第一块;将所述第一块的编码残差记录在比特流的不可丢弃区域上; 以及如果第二块被编码而不使用所述第一块，则将所述第一块的编码残差记录在所述比特流的可丢弃区域上。

10. 发明授权

US08687910B2 Image filtering method using pseudo-random number filter and apparatus thereof 有权
标题翻译：使用伪随机数滤波器的图像滤波方法及其装置
公开(公告)号：US08687910B2
公开(公告)日：2014-04-01
申请号：US13379088
申请日：2010-06-18
申请人： Hak-Sup Song , Sun-Mi Park , Woo-Jin Han
发明人： Hak-Sup Song , Sun-Mi Park , Woo-Jin Han
IPC分类号： G06K9/40
CPC分类号： H04N19/86
摘要： An image filtering method and apparatus that filter a block of a plane area by using a pseudo-random filter are provided, whereby artifacts generated in image encoding and decoding procedures are removed, the method including: determining a similarity between pixel values of a the first block; and generating a second block by selectively applying a pseudo-random filter on the first block according to a result of based on the determining the determined similarity.
摘要翻译：提供了一种通过使用伪随机滤波器来对平面区域的块进行滤波的图像滤波方法和装置，由此去除了在图像编码和解码过程中产生的伪像，该方法包括：确定第一块; 以及根据确定所确定的相似度的结果，通过在所述第一块上选择性地应用伪随机滤波器来产生第二块。

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