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公开(公告)号：KR100860690B1
公开(公告)日：2008-09-26
申请号：KR1020070008387
申请日：2007-01-26
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
IPC: H04N19/433 , H04N19/51
CPC classification number: H04N19/57 , H04N19/433 , H04N19/533 , H04N19/557 , H04N19/56
Abstract: 본 발명은 외부 메모리 액세스를 최소화하는 움직임 탐색 방법 및 장치에 관한 것으로 DMA(Direct memory access)를 이용하여 SAD연산 동안 외부 메모리를 액세스하며, 메모리 액세스와 SAD연산 처리에 있어서, 하나의 블록이 입력되면 매크로 블록의 위치가 어느 위치인지를 판단하여 주변 움직임 벡터와 소정의 외부 파라미터에 따라 수평 탐색 라인 길이를 설정하는 과정과, 주변 움직임 벡터의 중간값으로 예측 움직임 벡터를 산출하여 예측 움직임 벡터의 수직 방향 값을 초기 탐색 라인으로 설정하고, 적어도 하나의 수평 탐색 라인을 순차적으로 탐색하여 SAD를 계산하는 과정과, 적어도 하나의 수평 탐색 라인에서 최소 SAD의 위치를 판단하여 중심 라인에 위치하는 경우, 탐색을 종료하고 해당 최소 SAD위치를 최종 움직임 벡터로 선택함으로써 외부 메모리 액세스를 획기적으로 줄여 전체 움직임 벡터 추정의 소요 사이클수는 줄이고 움직임 벡터 추정의 정확도를 높일 수 있는 효과가 있다.
움직임, 메모리, 액세스, SAD, 탐색, 라인, 매크로 블록, 예측-
公开(公告)号：KR101608426B1
公开(公告)日：2016-04-04
申请号：KR1020080100752
申请日：2008-10-14
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
CPC classification number: H04N19/11 , H04N19/176 , H04N19/46 , H04N19/61
Abstract: 본발명에따른인트라예측부호화방법은, 인트라예측부호화를수행하는방법에있어서, 부호화를수행할영상을부호화단위로입력받는과정과, 상기부호화단위를분할하여, 복수의부단위를구성하는과정과, 상기부호화단위에적용할인트라예측모드를결정하는과정과, 결정된상기인트라예측모드에기초하여, 상기부호화단위에포함된부단위별로잉여데이터를획득하는과정과, 부호화단위의인트라예측모드및 부단위의잉여데이터를부호화하는과정을포함한다.
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公开(公告)号：KR1020090103674A
公开(公告)日：2009-10-01
申请号：KR1020080100752
申请日：2008-10-14
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
CPC classification number: H04N19/11 , H04N19/176 , H04N19/46 , H04N19/61 , H04N19/51
Abstract: PURPOSE: A method for predictive intra coding/decoding for video and an apparatus for same are provided to improve estimation performance by performing intra estimation by sub-unit for the intra-estimation of a coding unit. CONSTITUTION: An intra-prediction video coding apparatus includes an intra predictor(110), a subtractor(120), a storage(130), a residual data encoder(140), a residual data decoder(150), an adder(155), an entropy encoder(160), a controller(180), and a MUX( Multiplexer)(190). The controller indicates an IPM for a coding unit to the intra predictor. The intra predictor individually predicts a plurality of sub-units included in the coding unit in the IPM. Specifically, the intra predictor sequentially predicts the sub-units of a coding unit, referring to stored intra-prediction coded pixels in the intra-prediction order. The intra predictor also generates a predicted sub-unit 10 by applying the IPM to each sub-unit. In the process of intra-prediction, a recovered sub-unit(30) is created from residual data between a predicted sub-unit(10) and an original sub-unit(20) at the same position as the predicted sub-unit and the intra predictor uses the pixels of the recovered sub-unit as a reference for intra-prediction of a next sub-unit. Upon completion of intra-prediction for every sub-unit of the coding unit, the intra predictor calculates the cost of the IPM for the coding unit.
Abstract translation: 目的：提供一种用于视频的预测性内部编码/解码方法及其装置，以通过对编码单元的内部估计进行子单元的内部估计来提高估计性能。 内部预测图像编码装置包括帧内预测器（110），减法器（120），存储器（130），残差数据编码器（140），残余数据解码器（150），加法器（155） ，熵编码器（160），控制器（180）和MUX（多路复用器）（190）。 控制器指示用于内部预测器的编码单元的IPM。 内部预测器单独地预测包括在IPM中的编码单元中的多个子单元。 具体地，内部预测器以帧内预测顺序参考所存储的帧内预测编码像素，顺序地预测编码单元的子单元。 帧内预测器还通过将IPM应用于每个子单元来生成预测子单元10。 在帧内预测的过程中，从预测子单元（10）和原始子单元（20）之间的残留数据在与预测子单元相同的位置创建恢复的子单元（30）， 内部预测器使用恢复的子单元的像素作为下一个子单元的帧内预测的参考。 在编码单元的每个子单元完成帧内预测时，帧内预测器计算编码单元的IPM的成本。
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公开(公告)号：KR100842558B1
公开(公告)日：2008-07-01
申请号：KR1020070008380
申请日：2007-01-26
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
IPC: H04N7/24
CPC classification number: H04N19/57 , H04N19/109 , H04N19/176 , H04N19/567
Abstract: A block mode determining method for video encoding, and an apparatus therefor are provided to determine various macro block modes in an early stage according to a degree of block size activity by using the history characteristic of block size for a prior macroblock, thereby reducing the amount of motion estimation and rate-distortion operation required to a macroblock mode selection process significantly to reduce the entire complexity of an encoding system greatly. A macroblock mode determiner(210) comprises a block determiner(220), a substitute mode estimator(230), and a block mode selector(240). The block determiner compares a predetermined LBHM(Large Block History Map) value with a predetermined threshold value to determine a degree of the block size activity of an inputted macroblock. The substitute mode estimator selects only a part of block modes which the macroblock can have according to the degree of the block size activity. The block mode selector calculates motion estimation and rate-distortion values for available substitute modes selected from the substitute mode estimator to determine the optimal macroblock mode.
Abstract translation: 提供一种用于视频编码的块模式确定方法及其装置，用于根据块大小活动程度，通过使用先前宏块的块大小的历史特征来确定早期阶段的各种宏块模式，从而减少 的宏块模式选择过程所需的运动估计和速率失真操作显着地大大降低了编码系统的整体复杂度。 宏块模式确定器（210）包括块确定器（220），替代模式估计器（230）和块模式选择器（240）。 块确定器将预定的LBHM（大块历史记录映射）值与预定阈值进行比较，以确定输入的宏块的块大小的活动程度。 替代模式估计器仅根据块大小活动的程度选择宏块可以具有的块模式的一部分。 块模式选择器计算从替代模式估计器中选择的可用替代模式的运动估计和速率失真值，以确定最佳宏块模式。
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公开(公告)号：KR101630871B1
公开(公告)日：2016-06-16
申请号：KR1020090007171
申请日：2009-01-29
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
IPC: H04N19/11 , H04N19/147 , H04N19/51
Abstract: 본발명에따른영상부호화를위한인트라예측모드결정방법은, 입력된부호화블록의인트라예측모드들에대하여소정의코스트(Cost) 연산을수행하는과정과, 상기수행된코스트연산에따라코스트가작은순서로상기인트라예측모드들의순위(RANK)를정렬하는과정과, 상기정렬된순위에따라비트율-왜곡치-복잡도비용을계산하여상기계산된비트율-왜곡치-복잡도비용들을근거로인트라예측모드를결정하는과정을포함한다.
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Patent Agency Ranking
公开(公告)号：KR1020090090232A
公开(公告)日：2009-08-25
申请号：KR1020080015566
申请日：2008-02-20
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
IPC: H04N19/51
CPC classification number: H04N7/26861 , H04N19/103 , H04N19/139 , H04N19/176 , H04N19/46 , H04N19/513 , H04N19/61
Abstract: A direct mode encoding/decoding method capable of selecting an optimum mode of direct modes in consideration of the correlation characteristic of the image are provided to perform more efficient mode code by reducing bit quantity by inducing motion vector. If one nxM block is inputted(S801), a backward reference time axis direct mode is predicted and cost about the predicted mode is obtained(S802). The forward reference time direct mode is predicted and the cost about the predicted mode is obtained(S803). A space axis direct mode is predicted and cost about the predicted mode is obtained(S804). The determined encoding mode is transmitted to the decoder(S805).
Abstract translation: 提供考虑到图像的相关特性来选择直接模式的最佳模式的直接模式编码/解码方法，以通过诱导运动矢量减少比特量来执行更有效的模式码。 如果输入了一个nxM块（S801），则预测到反向基准时间轴直接模式，并且获得关于预测模式的成本（S802）。 预测正向参考时间直接模式，并获得关于预测模式的成本（S803）。 预测空间轴直接模式，并且获得关于预测模式的成本（S804）。 将确定的编码模式发送到解码器（S805）。
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公开(公告)号：KR1020100045959A
公开(公告)日：2010-05-04
申请号：KR1020100024553
申请日：2010-03-19
Applicant: 성균관대학교산학협력단
IPC: H04N19/103 , H04N19/51
CPC classification number: H04N19/533 , H04N19/51 , H04N19/567 , H04N19/577
Abstract: PURPOSE: A bi-prediction encoding method and apparatus, bi-prediction decoding method and apparatus, and a recoding medium are provided to increase the encoding efficiency of a motion vector through an encoding operation by selecting a motion vector having excellent encoding efficiency. CONSTITUTION: A bi-prediction encoding apparatus comprises an image input unit(10), a motion prediction unit(16), a motion compensating unit(17), a motion vector encoding unit(18), a residual data encoding unit(12), a residual data decoding unit(13), an entropy encoding unit(14), a multiplexing unit(19), and an encoding control unit. The image input unit inputs a non-compressed digital image, and the encoding control unit determines whether or not motion compensation is performed for the inputted image data. The residual data encoding unit quantizes the image data outputted to a subtraction unit, and the motion prediction unit predicts motion by using plural reference pictures.
Abstract translation: 目的：提供双预测编码方法和装置，双预测解码方法和装置以及编码介质，通过选择具有优良编码效率的运动矢量，通过编码操作提高运动矢量的编码效率。 构成：双预测编码装置包括图像输入单元（10），运动预测单元（16），运动补偿单元（17），运动矢量编码单元（18），残差数据编码单元（12） ，残差数据解码单元（13），熵编码单元（14），复用单元（19）和编码控制单元。 图像输入单元输入非压缩数字图像，并且编码控制单元确定是否对输入的图像数据执行运动补偿。 剩余数据编码单元对输出到减法单元的图像数据进行量化，并且运动预测单元通过使用多个参考图片来预测运动。
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公开(公告)号：KR100955396B1
公开(公告)日：2010-04-29
申请号：KR1020080014672
申请日：2008-02-19
Applicant: 성균관대학교산학협력단
IPC: H04N19/567
CPC classification number: H04N19/00569 , H04N19/105 , H04N19/15 , H04N19/176 , H04N19/50 , H04N19/577
Abstract: 본 발명은 양-예측(Bi-prediction) 부호화 방법 및 장치, 양-예측(Bi-prediction) 복호화 방법 및 장치 및 기록매체에 관한 것이다. 본 발명에 따르면 영상압축의 양-예측 부호화의 구현상의 복잡도 문제를 해결하고, 움직임이 선형적으로 발생한다는 사실을 이용하여 보다 효율적으로 움직임 벡터를 전송함으로써 부호화 효율을 높일 수 있는 양-예측(Bi-prediction) 부호화 방법 및 장치, 양-예측(Bi-prediction) 복호화 방법 및 장치 및 기록매체가 제공된다.
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公开(公告)号：KR100978465B1
公开(公告)日：2010-08-26
申请号：KR1020100024553
申请日：2010-03-19
Applicant: 성균관대학교산학협력단
IPC: H04N19/103 , H04N19/51
Abstract: 본 발명은 양-예측(Bi-prediction) 부호화 방법 및 장치, 양-예측(Bi-prediction) 복호화 방법 및 장치 및 기록매체에 관한 것이다. 본 발명에 따르면 영상압축의 양-예측 부호화의 구현상의 복잡도 문제를 해결하고, 움직임이 선형적으로 발생한다는 사실을 이용하여 보다 효율적으로 움직임 벡터를 전송함으로써 부호화 효율을 높일 수 있는 양-예측(Bi-prediction) 부호화 방법 및 장치, 양-예측(Bi-prediction) 복호화 방법 및 장치 및 기록매체가 제공된다.
Abstract translation: 双预测编码方法和装置，双预测解码方法和装置以及记录介质。 根据本发明的图像的压缩固定在预测编码的实施复杂性的问题，并且通过使用所述运动是线性产生量，可以通过比预测的发送有效运动向量提高编码效率的事实的量的（Bi 预测编码方法和装置，双预测解码方法和装置以及记录介质。
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公开(公告)号：KR1020080110454A
公开(公告)日：2008-12-18
申请号：KR1020080014672
申请日：2008-02-19
Applicant: 성균관대학교산학협력단
IPC: H04N19/567
CPC classification number: H04N19/00569 , H04N19/105 , H04N19/15 , H04N19/176 , H04N19/50 , H04N19/577
Abstract: A bi-prediction coding/decoding apparatus and a method thereof are provided to perform coding/decoding efficiently by simplifying joint estimation. A first selection motion vector from the first reference feature about the encoded current block is selected(S11). A first computation motion vector about the second reference feature based on the first selection motion vector is calculated(S12). A first predictive coding cost is calculated based on the first selection motion estimation block corresponding to the first selection motion vector, the first computation motion vector, the first selection motion vector, and the second computation motion estimation block corresponding to the first computation motion vector(S14). The second selection motion vector from the second reference feature is selected(S17). The second computation motion vector about the first reference feature based on the second selection motion vector is calculated(S18).
Abstract translation: 提供双预测编码/解码装置及其方法，通过简化联合估计来有效地执行编码/解码。 选择来自第一参考特征的关于编码的当前块的第一选择运动矢量（S11）。 计算基于第一选择运动矢量的关于第二参考特征的第一计算运动矢量（S12）。 基于与第一选择运动矢量对应的第一选择运动估计块，第一计算运动矢量，第一选择运动矢量和与第一计算运动矢量对应的第二运算运动估计块， S14）。 选择来自第二参考特征的第二选择运动矢量（S17）。 计算关于基于第二选择运动矢量的第一参考特征的第二运算运动矢量（S18）。
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