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公开(公告)号：US20140362906A1
公开(公告)日：2014-12-11
申请号：US14372278
申请日：2013-01-18
Inventor： Hui Yong Kim , Jin Ho Lee , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/51 , H04N19/583 , H04N19/182 , H04N19/159 , H04N19/105
CPC classification number: H04N19/51 , H04N19/105 , H04N19/182 , H04N19/196 , H04N19/513 , H04N19/52 , H04N19/593 , H04N19/82
Abstract: A method for decoding an image according to the present invention comprises the steps of: restoring a residual block by performing inverse quantization and inverse transformation for the entropy-decoded residual block; generating a prediction block by performing intra prediction for a current block; and restoring an image by adding the restored residual block to the prediction block, wherein the step of generating the prediction block further comprises a step for generating a final prediction value of a pixel to be predicted, on the basis of a first prediction value of the pixel to be predicted, which is included in the current block, and of a fmal correction value that is calculated by performing an arithmetic right shift by a binary digit I for a two's complement integer representation with respect to an initial correction value of the pixel to be predicted. The operational complexity during image encoding/decoding can be reduced.
Abstract translation: 根据本发明的用于解码图像的方法包括以下步骤：通过对熵解码的残余块执行逆量化和逆变换来恢复残差块; 通过对当前块执行帧内预测来生成预测块; 以及通过将所述恢复的残差块加到所述预测块中来恢复图像，其中，所述生成所述预测块的步骤还包括根据所述预测块的第一预测值生成要预测的像素的最终预测值的步骤 包含在当前块中的要预测的像素，以及通过对二进制补码整数表示相对于像素的初始校正值执行二进制数字I的算术右移而计算出的伪校正值， 被预测。 可以减少图像编码/解码期间的操作复杂度。
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公开(公告)号：US20140341284A1
公开(公告)日：2014-11-20
申请号：US14353615
申请日：2012-11-08
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Hui Yong Kim , Gwang Hoon Park , Kyung Yong Kim , Sang Min Kim , Sung Chang Lim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/503 , H04N19/593
CPC classification number: H04N19/159 , H04N19/105 , H04N19/117 , H04N19/122 , H04N19/124 , H04N19/13 , H04N19/15 , H04N19/176 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/52 , H04N19/593 , H04N19/61
Abstract: The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.
Abstract translation: 本发明涉及共享候选列表的方法和装置。 一种生成用于预测块的合并候选列表的方法可以包括：基于包括执行并行合并处理的预测块的编码块，生成空间合并候选和时间合并候选中的至少一个 的预测块; 以及基于所生成的合并候选来生成编码块的单个合并候选列表。 因此，通过在多个预测块上并行执行画面间预测，可以提高编码和解码的处理速度。
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公开(公告)号：US20140286434A1
公开(公告)日：2014-09-25
申请号：US14350267
申请日：2012-10-05
Inventor： Ha Hyun Lee , Jung Won Kang , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/33 , H04N19/80 , H04N19/187
Abstract: The present invention relates to an image-encoding method, to an image-decoding method, and to an apparatus using same. The image-encoding method according to the present invention comprises the following steps: determining the location of a corresponding sample in a reference layer; restoring a sample of a reference unit in the reference layer, specified by the corresponding sample, so as to generate a reference sample signal; and encoding a differential signal between the sample signal of the current unit of an enhancement layer and the reference sample signal.
Abstract translation: 本发明涉及一种图像编码方法，一种图像解码方法以及使用该方法的装置。 根据本发明的图像编码方法包括以下步骤：确定参考层中相应样本的位置; 恢复由相应样本指定的参考层中的参考单元的样本，以产生参考采样信号; 并且对增强层的当前单元的采样信号和参考采样信号之间的差分信号进行编码。
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公开(公告)号：US20250080752A1
公开(公告)日：2025-03-06
申请号：US18952269
申请日：2024-11-19
Inventor： Sung Chang LIM , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Jae Gon Kim , Sang Yong Lee , Hae Chul CHOI
IPC: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/70
Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.
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公开(公告)号：US12231635B2
公开(公告)日：2025-02-18
申请号：US18311786
申请日：2023-05-03
Inventor： Sung Chang Lim , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Jae Gon Kim , Sang Yong Lee
IPC: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/70 , H04N19/91 , H04N19/147
Abstract: The present invention relates to video encoding/decoding methods and device, wherein the video encoding method according to the invention comprises the following steps: acquiring information of peripheral blocks; setting the information about a current block based on the information of the peripheral blocks; and encoding the current block based on the set information, wherein the current block and the peripheral blocks may be a CU (coding unit).
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Patent Agency Ranking
公开(公告)号：US12177461B2
公开(公告)日：2024-12-24
申请号：US18456723
申请日：2023-08-28
Inventor： Ha Hyun Lee , Jung Won Kang , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/187 , H04N19/105 , H04N19/176 , H04N19/31 , H04N19/33 , H04N19/463 , H04N19/52 , H04N19/70
Abstract: Disclosed are a method and an apparatus for image encoding/decoding that support a plurality of layers. The method for image decoding that supports a plurality of layers includes decoding information of a first layer which a picture of a second layer including a current decoding target block refers to; mapping the information of the first layer to a picture size of the second layer, configuring a reference picture list for the picture of the second layer by adding the mapped information of the first layer and generating prediction samples of the current decoding target block by predicting the current decoding target block of the second layer based on the reference picture list, and the information of the first layer includes at least one of a sample value and motion information of the first layer picture.
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公开(公告)号：US12149724B2
公开(公告)日：2024-11-19
申请号：US18475817
申请日：2023-09-27
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn
IPC: H04N19/44 , H04N19/50 , H04N19/503 , H04N19/52 , H04N19/597
Abstract: An inter prediction method according to the present invention comprises the steps of: selecting candidate units from among reconstructed neighbor units; creating a candidate unit set with respect to units to be decoded, using the selected candidate units; determining a reference unit from among the candidate units which constitute the created candidate unit set; and performing inter prediction on the units to be decoded, using the determined reference unit. According to the present invention, image encoding/decoding efficiency can be improved.
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公开(公告)号：US12010300B2
公开(公告)日：2024-06-11
申请号：US18191285
申请日：2023-03-28
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Hui Yong Kim , Gwang Hoon Park , Kyung Yong Kim , Sung Chang Lim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/12 , H04N19/11 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/61 , H04N19/96
CPC classification number: H04N19/11 , H04N19/12 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/61 , H04N19/96
Abstract: An encoding method and decoding method, and a device implementing the same are provided. The encoding method obtains an intra prediction mode related to a current block from a video signal, obtains prediction samples of the current block by performing intra prediction on the current block based on the intra prediction mode, scans transform coefficients of the current block based on a scanning type of the current block, obtains dequantized transform coefficients of the current block by dequantizing the transform coefficients, obtains residual samples of the current block by performing an inverse-transform on the dequantized transform coefficients, the inverse-transform being performed in a horizontal direction and a vertical direction, reconstructs the current block using the residual samples and the prediction samples, and applies a deblocking filter on the reconstructed current block.
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公开(公告)号：US12003752B2
公开(公告)日：2024-06-04
申请号：US18200085
申请日：2023-05-22
Inventor： Hui Yong Kim , Jin Ho Lee , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/583 , H04N19/105 , H04N19/182 , H04N19/196 , H04N19/42 , H04N19/51 , H04N19/513 , H04N19/52 , H04N19/593 , H04N19/82
CPC classification number: H04N19/51 , H04N19/105 , H04N19/182 , H04N19/196 , H04N19/42 , H04N19/513 , H04N19/52 , H04N19/593 , H04N19/82
Abstract: An image decoding method according to the present invention includes reconstructing a residual block by inverse-quantizing and inverse-transforming an entropy-decoded residual block, generating a prediction block by performing intra prediction on a current block, and reconstructing an picture by adding the reconstructed residual block to the prediction block, wherein generating the prediction block includes generating a final prediction value of a prediction target pixel included in the current block based on a first prediction value of the prediction target pixel and a final correction value calculated by performing an arithmetic right shift on a two's complementary integer representation for an initial correction value of the prediction target pixel by a binary digit of 1. Accordingly, upon image encoding/decoding, computation complexity may be reduced.
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公开(公告)号：US11962803B2
公开(公告)日：2024-04-16
申请号：US18203915
申请日：2023-05-31
Inventor： Jin Ho Lee , Hui Yong Kim , Sung Chang Lim , Jong Ho Kim , Ha Hyun Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/593
CPC classification number: H04N19/593
Abstract: The multi sample prediction method of the present invention comprises the steps of: determining a sample group consisting of a plurality of samples inside a decoding target block; determining a representative position corresponding to the sample group, inside the decoding target block; determining a representative prediction value for the sample group, on the basis of the determined representative position; and determining the determined representative prediction value as the final prediction value for each of the plurality of samples making up the sample group. The present invention enhances efficiency in encoding/decoding and reduces complexity thereof.
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