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公开(公告)号：KR1020120078647A
公开(公告)日：2012-07-10
申请号：KR1020110147083
申请日：2011-12-30
Applicant: 한국전자통신연구원 , 경희대학교 산학협력단
CPC classification number: H04N19/10 , H04N19/105 , H04N19/196 , H04N19/197 , H04N19/61
Abstract: PURPOSE: An image information encoding method, a decoding method thereof, and a device thereof are provided to encode or decode information about a current encoding unit using surrounding information. CONSTITUTION: An encoder predicts information about information about a current CU(Coding Unit) through CU information corresponding to the current CU in a reference frame(S810). If predicted information is the same as the current CU information, the encoder encodes only a prediction flag(S820,S830). If the predicted information is not the same as the current CU information, the encoder encodes a prediction flag(S840). And the encoder encodes the current CU information together with the prediction flag(S850).
Abstract translation: 目的：提供图像信息编码方法及其解码方法及其装置，以使用周围信息对当前编码单元的信息进行编码或解码。 构成：编码器通过与参考帧中的当前CU相对应的CU信息来预测关于当前CU（编码单元）的信息的信息（S810）。 如果预测信息与当前CU信息相同，则编码器仅编码预测标志（S820，S830）。 如果预测信息与当前CU信息不同，则编码器对预测标志进行编码（S840）。 并且编码器与当前的CU信息一起编码预测标志（S850）。
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公开(公告)号：KR1020120004319A
公开(公告)日：2012-01-12
申请号：KR1020100132387
申请日：2010-12-22
Applicant: 한국전자통신연구원
IPC: H04N19/91 , H04N19/89 , H04N19/70 , H04N19/436 , H04N19/46 , H04N19/176 , H04N19/13
CPC classification number: H04N19/91 , H04N19/13 , H04N19/176 , H04N19/436 , H04N19/46 , H04N19/70 , H04N19/89
Abstract: PURPOSE: An apparatus for performing entropy encoding and decoding in parallel is provided to perform entropy encoding and decoding for the selection and update of a context model and for each bin encoding and decoding. CONSTITUTION: An information generator(610) creates entropy encoding slice information. A plurality of binarization units(620) binarizes a plurality of entropy encoding slices. A plurality of context modeling units(630) creates a coding bins. A plurality of bin encoder determination units(640) assigns the coding bins to bin encoders. A plurality of bin encoders(660) creates code words through a bin encoding of the coding bins.
Abstract translation: 目的：提供一种用于并行执行熵编码和解码的装置，用于对上下文模型的选择和更新以及每个bin编码和解码进行熵编码和解码。 构成：信息发生器（610）创建熵编码片信息。 多个二值化单元（620）对多个熵编码片进行二值化。 多个上下文建模单元（630）创建编码箱。 多个bin编码器确定单元（640）将编码箱分配给bin编码器。 多个二进制编码器（660）通过编码箱的bin编码创建代码字。
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公开(公告)号：KR1020110004323A
公开(公告)日：2011-01-13
申请号：KR1020100064808
申请日：2010-07-06
Applicant: 한국전자통신연구원 , 경희대학교 산학협력단
CPC classification number: H04N21/816 , H04N13/161 , H04N13/178 , H04N19/597 , H04N21/235 , H04N21/2353 , H04N21/2362 , H04N21/2365 , H04N21/2368 , H04N21/4341 , H04N21/4345 , H04N21/4347 , H04N21/435 , H04N21/84
Abstract: PURPOSE: A method and an apparatus for transmitting/receiving a stereoscopic video in a digital broadcasting system are provided to broadly use a stereoscopic video service. CONSTITUTION: A stereoscopic video encoder(1030) outputs one or two encoding streams. A PES(Packetized Elementary Stream) packetizing unit(1040) generates the encoding streams by PES packets. A TS(Transport Stream) multiplexing unit(1050) multiplexes the PES packet and generated information of an information generating unit(1010) by an MPEG-2 transport stream. A channel encoder(1060) encodes a channel of the transport stream.
Abstract translation: 目的：提供一种用于在数字广播系统中发送/接收立体视频的方法和装置，以广泛地使用立体视频服务。 构成：立体视频编码器（1030）输出一个或两个编码流。 PES（分组化基本流）分组单元（1040）通过PES分组生成编码流。 TS（传输流）复用单元（1050）通过MPEG-2传输流复用PES分组和信息生成单元（1010）的生成信息。 信道编码器（1060）对传输流的信道进行编码。
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公开(公告)号：KR1020100138735A
公开(公告)日：2010-12-31
申请号：KR1020100033225
申请日：2010-04-12
Applicant: 한국전자통신연구원
Inventor： 정세윤 , 최해철 , 임성창 , 김종호 , 이하현 , 조숙희 , 최진수 , 홍진우 , 정광수 , 박시내 , 남정학 , 조현호 , 심동규 , 안창범 , 박광훈 , 오승준
IPC: H04N19/117 , H04N19/137
CPC classification number: H04N19/126 , H04N19/146 , H04N19/159 , H04N19/172 , H04N19/176
Abstract: PURPOSE: A video encoding and decoding apparatus and a method using context information based adaptive post filter are provided to improve the efficiency of video encoding. CONSTITUTION: A reconstitution video generator(120) creates the reconstructed image using the differential signal and the restored prediction frame. The reconstitution video generator applies the deblocking filter. A post filter unit(130) decides whether to apply the fixed post filter based on the contextual information of the reconstructed image to the reconstructed image. The post filter unit decides whether to apply the post filter adaptively based on the contextual information of the reconstructed image to the reconstructed image. The post filter unit applies the fixed post filter or the post filter which was adaptively generated to the reconstructed image.
Abstract translation: 目的：提供一种使用基于上下文信息的自适应后置滤波器的视频编码和解码装置和方法，以提高视频编码的效率。 构成：重构视频发生器（120）使用差分信号和恢复的预测帧创建重构图像。 重构视频发生器应用去块滤波器。 后置滤波器单元（130）基于重构图像的上下文信息来确定是否将该固定后置滤波器应用于重构图像。 后置滤波器单元基于重构图像的上下文信息自适应地将后置滤波器应用于重构图像。 后置滤波器单元将自适应生成的固定后置滤波器或后置滤波器应用于重建图像。
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公开(公告)号：KR1020100111835A
公开(公告)日：2010-10-18
申请号：KR1020090030238
申请日：2009-04-08
Applicant: 한국전자통신연구원 , 광운대학교 산학협력단
IPC: H04N7/24
CPC classification number: H04N19/122 , H04N19/124 , H04N19/176
Abstract: PURPOSE: A method and an apparatus for multi-dimensional transform and thresholding using multiple unit blocks are provided to improve the performance video data compression by performing additional conversion of adjacent blocks. CONSTITUTION: A block selection unit(231) converts an image data in M dimension. The block selection unit selects a block in the image data converted in M dimension. A conversion factor array unit(232) extracts the same conversion factors of the frequency from the blocks. A discrete cosine transform(233) arranges M dimension changed into the integer type N dimension.
Abstract translation: 目的：提供一种使用多个单位块进行多维变换和阈值处理的方法和装置，以通过执行相邻块的附加转换来改善视频数据压缩的性能。 构成：块选择单元（231）转换M维的图像数据。 块选择单元选择以M维转换的图像数据中的块。 转换因子阵列单元（232）从块提取相同的频率转换因子。 离散余弦变换（233）将M维变换为整数类型N维。
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Patent Agency Ranking196.发明公开
公开(公告)号：KR1020090075767A
公开(公告)日：2009-07-09
申请号：KR1020080001508
申请日：2008-01-05
Applicant: 경희대학교 산학협력단 , 한국전자통신연구원
IPC: H04N19/11 , H04N19/176
CPC classification number: H04N19/176 , H04N19/11 , H04N19/159
Abstract: An encoding and decoding method using space prediction directional information of adjacent blocks and an apparatus thereof are provided to exactly predict a prediction mode of a current block by using directional information of a prediction mode of an adjacent block, thereby increasing efficiency of entropy coding. An intra block of a current block is efficiently predicted by using directional information contents of intra mode information of adjacent blocks(410~440). Groups of many intra prediction block modes are formed. The number of groups and prediction modes included in the groups are adaptively changed to improve compressing efficiency. A prediction mode of the current mode is exactly predicted by using directional information of a prediction mode of the adjacent blocks.
Abstract translation: 提供使用相邻块的空间预测方向信息的编码和解码方法及其装置，通过使用相邻块的预测模式的定向信息来精确地预测当前块的预测模式，从而提高熵编码的效率。 通过使用相邻块（410〜440）的帧内模式信息的定向信息内容来有效地预测当前块的帧内块。 形成许多帧内预测块模式的组。 组中包括的组数和预测模式自适应地改变以提高压缩效率。 通过使用相邻块的预测模式的定向信息来精确地预测当前模式的预测模式。
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公开(公告)号：KR100825737B1
公开(公告)日：2008-04-29
申请号：KR1020060098098
申请日：2006-10-09
IPC: H04N19/30 , H04N19/177 , H04N19/895
CPC classification number: H04N21/2383 , H04N19/29 , H04N19/33 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/61 , H04N19/70 , H04N19/89 , H04N19/895 , H04N21/2402 , H04N21/2404 , H04N21/2662 , H04N21/40
Abstract: 본 발명은 GOP 단위를 구분하는 키 픽쳐들 간에 연속적인 예측에 의한 폐루프 코딩을 수행하는 스케일러블 비디오 코딩 방법 및 그 방법을 이용하는 코덱을 제공한다.
상기 스케일러블 비디오 코딩 방법은 상위 계층의 키 픽쳐에 순차적으로 번호를 부여하면서 인코딩하고, 상기 번호 인코딩되어 입력되는 상위 계층의 현재 키 픽쳐와 상기 현재 키 픽쳐 이전에 번호 인코딩되어 입력된 과거 키 픽쳐 사이에 키 픽쳐 손실을 검출하여 디코딩한다. 또한, 하위 기본 계층의 전송이 보장되는 경우 상기 키 픽쳐 손실시 하위계층의 정보를 이용하여 에러를 은닉하여 디코딩할 수 있다.
따라서, 키 픽쳐 넘버링을 통해 키 픽쳐의 손실의 여부를 알아내어 손실에 의한 에러에 효과적으로 대처할 수 있고, 하위 기본 계층의 전송이 보장되는 경우 상위 계층의 키 픽쳐 손실시 하위 계층의 대응 픽쳐의 디코딩된 영상 정보를 이용함으로써 잘못된 참조에 의해 발생하는 에러를 은닉함으로써 영상 품질 저하를 최소화할 수 있다.
SVC, 키 픽쳐, 넘버링, 에러 전파, 에러 은닉, 디코딩-
公开(公告)号：KR1020080004392A
公开(公告)日：2008-01-09
申请号：KR1020070067031
申请日：2007-07-04
Applicant: 한국전자통신연구원 , 경희대학교 산학협력단
IPC: H04N19/30 , H04N19/105 , H04N19/51
Abstract: A scalable video encoding/decoding method and an apparatus thereof are provided to override an existing weight given in a slice unit to a corresponding block of an enhancement layer of a reference frame with a greater weight than the existing weight in forming the reference block of the enhancement layer when the video data of a macro block of a basic layer is in a skip mode, thereby improving efficiency of SVC(Scalable Video Coding). A scalable video encoding method comprises the following steps of: determining whether the block of a basic layer corresponding to the block of an enhancement layer of a current frame to encode is in a skip mode(S210); overriding an existing weight set in the block of the enhancement layer of a reference frame corresponding to the block of the enhancement layer of the current frame with a new weight when the block of the basic layer is in the skip mode(S220); and generating a reference block for the block of the enhancement layer of the current frame based on the block of the enhancement layer of the reference frame and the block of the basic layer of the current frame by using the new weight(S230).
Abstract translation: 提供了一种可分级的视频编码/解码方法及其装置，以将在片单元中给出的现有权重覆盖参考帧的增强层的对应块，其中权重大于现有权重，以形成参考块的参考块 当基本层的宏块的视频数据处于跳过模式时，增强层，从而提高SVC（可缩放视频编码）的效率。 可扩展视频编码方法包括以下步骤：确定与要编码的当前帧的增强层的块相对应的基本层的块是否处于跳过模式（S210）; 当基本层的块处于跳过模式时，用当前帧的当前帧的增强层的块对应的参考帧的增强层的块中的现有权重集合（S220）; 并且通过使用新的权重，基于参考帧的增强层的块和当前帧的基本层的块来生成当前帧的增强层的块的参考块（S230）。
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公开(公告)号：KR1020080004340A
公开(公告)日：2008-01-09
申请号：KR1020070040969
申请日：2007-04-26
Applicant: 한국전자통신연구원 , 경희대학교 산학협력단
IPC: H04N19/30 , H04N19/103
CPC classification number: H04N19/34 , H04N19/132 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/61
Abstract: A method for scalable encoding of video data and an apparatus thereof are provided to override an existing weight value given in a slice unit with a greater weight when the reference block of an enhancement layer is generated if the video data of a macro block of a base layer is in a skip mode, thereby improving efficiency of the scalable video encoding. A method for scalable encoding of video data comprises the following steps of: generating a reference block by using a weight set for a corresponding block when the video data of a macro block can be predicted from the video data of reference pictures for the video data of the macro block(220); and generating the reference block by using a weight given to a slice belonging to a current frame when the video data of the macro block can not be predicted from the video data of the reference pictures.
Abstract translation: 提供一种用于视频数据的可分级编码的方法及其装置，用于当生成增强层的参考块时，以更大的权重来覆盖在片单元中给出的现有权重值，如果基址的宏块的视频数据 层处于跳过模式，从而提高可扩展视频编码的效率。 一种用于视频数据的可分级编码的方法包括以下步骤：当可从根据视频数据的视频数据的参考图像的视频数据预测宏块的视频数据时，通过使用对于相应块的权重来生成参考块 宏块（220）; 以及当所述宏块的视频数据不能从所述参考图像的视频数据中预测时，通过使用给予属于当前帧的切片的权重来生成所述参考块。
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公开(公告)号：KR1020070040303A
公开(公告)日：2007-04-16
申请号：KR1020060098098
申请日：2006-10-09
IPC: H04N19/30 , H04N19/177 , H04N19/895
CPC classification number: H04N21/2383 , H04N19/29 , H04N19/33 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/61 , H04N19/70 , H04N19/89 , H04N19/895 , H04N21/2402 , H04N21/2404 , H04N21/2662 , H04N21/40
Abstract: Since joint scalable video coding (JSVC) adopts a scheme in which numbers are assigned to all of the pictures according to the order in which the pictures are displayed, it is difficult to detect a drop (or loss) of a key picture and thus it is difficult to effectively take action against an error caused by the loss of the key picture. The present invention provides a coding method of detecting a loss of a key picture by numbering key pictures in JSVC in which predictive (P) pictures have a closed-loop structure and of effectively taking action against an error in the case of a loss of a key picture, and a codec using the coding method. The SVC method includes performing encoding while assigning a number to a key picture of an upper layer and performing decoding with respect to the number- encoded current key picture of the upper layer using data of a decoded image of a picture of a lower layer that is temporally matched with the current key picture of the upper layer when a loss of a key picture between the number-encoded current key picture of the upper layer and a previous key picture that is number-encoded prior to the current key picture is detected. Therefore, it is possible to effectively take action against to an error caused by a loss of a key picture by detecting the loss of a key picture during decoding by encoding using numbering of key pictures in JSVC in which closed-loop coding is performed by consecutively predicting key pictures. Moreover, it is possible to minimize degradation in image quality by concealing an error caused by an incorrect reference by using data of a decoded image of a corresponding picture of a lower base layer when a key picture of an upper layer is lost in an environment where transmission of the lower base layer is guaranteed with a video stream having a multi-layered structure.
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