公开(公告)号：US09781443B2

公开(公告)日：2017-10-03

申请号：US15449109

申请日：2017-03-03

Applicant: SK TELECOM CO., LTD.

Inventor： Sunyeon Kim ,  Jeongyeon Lim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jongki Han ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N19/56 ,  H04N19/52 ,  H04N19/57 ,  H04N19/132 ,  H04N19/176 ,  H04N19/182 ,  H04N19/124 ,  H04N19/61

CPC classification number: H04N19/52 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/182 ,  H04N19/56 ,  H04N19/57 ,  H04N19/61

Abstract: The present disclosure relates to a method and apparatus for encoding/decoding a motion vector and a method and apparatus for encoding/decoding video using same. The motion vector encoding method includes selecting a predicted motion vector candidate set including one or more predicted motion vector candidates for a block; determining one or more search ranges for predicted motion vector candidate set; selecting one predicted motion vector candidate among one or more predicted motion vector candidates as predicted motion vector for each search point with respect to each search point within search range by first determination criterion prearranged with video decoding apparatus; selecting one predicted motion vector among the predicted motion vectors for each search point by a second determination criterion not prearranged with the video decoding apparatus, and determining predicted motion vector, differential motion vector, and current motion vector; and generating and encoding the differential motion vector as motion information.

公开(公告)号：US09445118B2

公开(公告)日：2016-09-13

申请号：US14718036

申请日：2015-05-20

Applicant: SK TELECOM CO., LTD.

Inventor： Sunyeon Kim ,  Byeungwoo Jeon ,  Jungyoup Yang ,  Kwanghyun Won ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim

IPC: G06K9/36 ,  H04N19/513 ,  G06T9/00 ,  H04N19/52 ,  H04N19/51 ,  H04N19/103 ,  H04N19/107 ,  H04N19/124 ,  H04N19/139 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/521 ,  G06T9/00 ,  H04N19/103 ,  H04N19/107 ,  H04N19/124 ,  H04N19/139 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/52

Abstract: A video decoding apparatus using an inter-prediction is disclosed. The apparatus includes at least: a decoder configured to reconstruct a flag and quantized transform coefficients by decoding a bitstream, the flag indicating one among a plurality of modes for determining the motion vector of the current block; a predictor configured to determine a motion vector of a current block to be decoded in a current picture, and predict pixels in current block using the motion vector of the current block; an inverse quantizer and inverse transformer configured to inversely quantize and then inversely transform the quantized transform coefficients to thereby reconstruct residual signals; and an adder configured to add the predicted pixels to the reconstructed residual signals which correspond to the predicted pixels.

Abstract translation: 公开了使用帧间预测的视频解码装置。 该装置至少包括：解码器，被配置为通过解码比特流来重构标志和量化的变换系数，所述标志指示用于确定当前块的运动矢量的多个模式之一; 预测器，被配置为确定当前图像中要解码的当前块的运动矢量，并且使用当前块的运动矢量来预测当前块中的像素; 逆量化器和逆变换器，被配置为逆量化，然后逆量化变换量化的变换系数，从而重建残余信号; 以及加法器，被配置为将预测像素与对应于预测像素的重构残差信号相加。

公开(公告)号：US09628815B2

公开(公告)日：2017-04-18

申请号：US14692356

申请日：2015-04-21

Applicant: SK TELECOM CO., LTD.

Inventor： Kwanghyun Won ,  Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang

IPC: H04N19/513 ,  H04N19/573 ,  H04N19/52 ,  H04N19/567 ,  H04N19/124 ,  H04N19/46 ,  H04N19/61

CPC classification number: H04N19/573 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/567 ,  H04N19/61

Abstract: A video decoding method using an inter prediction, includes: reconstructing a first differential motion vector and a second differential motion vector of a current block by decoding encoded data; deriving a first predicted motion vector and a second predicted motion vector of the current block from one or more neighboring blocks of the current block; generating a first motion vector of the current block by adding the first candidate motion vector to the first differential motion vector, and a second motion vector of the current block by adding the second candidate motion vector to the second differential motion vector; generating a predicted block of the current block by using the first and second motion vectors; reconstructing a residual block by decoding residual signals included in the encoded data; and adding each pixel value of the predicted block to a corresponding pixel value of the residual block.

公开(公告)号：US09398298B2

公开(公告)日：2016-07-19

申请号：US14713165

申请日：2015-05-15

Applicant: SK TELECOM CO., LTD.

Inventor： Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N7/12 ,  H04N19/11 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/593 ,  H04N19/44 ,  H04N19/16

CPC classification number: H04N19/11 ,  H04N19/147 ,  H04N19/16 ,  H04N19/176 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

Abstract: An apparatus for decoding a video includes: a mode information extractor to extract mode information on an intra-prediction mode of a current block from encoded data; a prediction mode determiner to determine a candidate intra-prediction mode selected from a plurality of candidate intra-prediction modes as the intra-prediction mode of the current block, when the mode information indicates a first encoding mode; a prediction mode extractor to determine the intra-prediction mode of the current block by using a prediction mode identifier, when the mode information indicates a second encoding mode and includes the prediction mode identifier; and a decoder to decode the encoded data to produce a residual block, and reconstruct the current block by adding the produced residual block to a prediction block predicted based on the intra-prediction mode of the current block determined by either the prediction mode determiner or the prediction mode extractor.

Abstract translation: 一种解码视频的装置包括：模式信息提取器，用于从编码数据中提取当前块的帧内预测模式的模式信息; 当模式信息指示第一编码模式时，确定从多个候选帧内预测模式中选择的候选帧内预测模式作为当前块的帧内预测模式的预测模式确定器; 预测模式提取器，当模式信息指示第二编码模式并且包括预测模式标识符时，通过使用预测模式标识符来确定当前块的帧内预测模式; 以及解码器，用于对编码数据进行解码以产生残差块，并且通过将所产生的残差块与基于由预测模式确定器或预测模式确定器确定的当前块的帧内预测模式预测的预测块相加来重构当前块 预测模式提取器。

公开(公告)号：US09374584B2

公开(公告)日：2016-06-21

申请号：US14713135

申请日：2015-05-15

Applicant: SK TELECOM CO., LTD.

Inventor： Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N7/12 ,  H04N19/11 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/593 ,  H04N19/44 ,  H04N19/16

CPC classification number: H04N19/11 ,  H04N19/147 ,  H04N19/16 ,  H04N19/176 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

Abstract: An apparatus for decoding a video, includes: a mode information extractor to extract mode information on an intra-prediction mode of a current block from encoded data; a prediction mode determiner to determine a candidate intra-prediction mode selected from a plurality of candidate intra-prediction modes as the intra-prediction mode of the current block, when the mode information indicates a first encoding mode; a prediction mode extractor to determine the intra-prediction mode of the current block by using a prediction mode identifier, when the mode information indicates a second encoding mode and includes the prediction mode identifier; and a decoder to decode the encoded data to produce a residual block, and reconstruct the current block by adding the produced residual block to a prediction block predicted based on the intra-prediction mode of the current block determined by either the prediction mode determiner or the prediction mode extractor.

Abstract translation: 一种用于解码视频的装置，包括：模式信息提取器，用于从编码数据中提取当前块的帧内预测模式的模式信息; 当模式信息指示第一编码模式时，确定从多个候选帧内预测模式中选择的候选帧内预测模式作为当前块的帧内预测模式的预测模式确定器; 预测模式提取器，当模式信息指示第二编码模式并且包括预测模式标识符时，通过使用预测模式标识符来确定当前块的帧内预测模式; 以及解码器，用于对编码数据进行解码以产生残差块，并且通过将所产生的残差块与基于由预测模式确定器或预测模式确定器确定的当前块的帧内预测模式预测的预测块相加来重构当前块 预测模式提取器。

公开(公告)号：US09326002B2

公开(公告)日：2016-04-26

申请号：US14693778

申请日：2015-04-22

Applicant: SK TELECOM CO., LTD.

Inventor： Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N11/02 ,  H04N19/513 ,  H04N19/51 ,  H04N19/52 ,  H04N19/503 ,  H04N19/124 ,  H04N19/44 ,  H04N19/61 ,  H04N19/60 ,  H04N19/137

CPC classification number: H04N19/513 ,  H04N19/124 ,  H04N19/137 ,  H04N19/44 ,  H04N19/503 ,  H04N19/52 ,  H04N19/60 ,  H04N19/61

Abstract: A video decoding method using an inter prediction, includes: obtaining block mode information and residual data from encoded data; generating a predicted block by performing the inter prediction in the unit of a block identified by the block mode information; identifying one or more conditions for enabling an inverse quantization and an inverse transform; skipping both of the inverse quantization and the inverse transform for the obtained residual data to thereby reconstruct a residual block directly from the obtained residual data, when the one or more identified conditions indicate skipping of both the inverse quantization and the inverse transform; inversely quantizing the obtained residual data and skipping the inverse transform for the inversely quantized residual data to thereby reconstruct a residual block using the inverse-quantized residual data, when the one or more identified conditions indicate skipping of the inverse transform.

Abstract translation: 使用帧间预测的视频解码方法包括：从编码数据获取块模式信息和残差数据; 通过以由块模式信息识别的块为单位执行帧间预测来生成预测块; 识别用于启用逆量化和逆变换的一个或多个条件; 当所述一个或多个识别的条件指示所述逆量化和所述逆变换两者都跳过时，跳过所获得的残差数据的逆量化和逆变换，从而从所获得的残差数据直接重建残余块; 当所述一个或多个识别的条件指示所述逆变换的跳过时，对所获得的残差数据进行逆量化，并跳过所述逆量化残差数据的逆变换，从而使用所述逆量化残差数据来重构残差块。

公开(公告)号：US09137532B2

公开(公告)日：2015-09-15

申请号：US14302738

申请日：2014-06-12

Applicant: SK TELECOM CO., LTD.

Inventor： Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N11/02 ,  H04N19/51 ,  H04N19/52 ,  H04N19/503 ,  H04N19/513

CPC classification number: H04N19/513 ,  H04N19/124 ,  H04N19/137 ,  H04N19/44 ,  H04N19/503 ,  H04N19/52 ,  H04N19/60 ,  H04N19/61

Abstract: Disclosed is a method for decoding a video using an inter prediction. The method identifies one or more conditions for enabling an inverse quantization and an inverse transform, and selectively performs, based on the identified conditions, at least one of: skipping both of the inverse quantization and the inverse transform for the obtained residual data; inversely quantizing the obtained residual data and skipping the inverse transform for the inversely quantized residual data; and inversely quantizing and then inversely transforming the obtained residual data.

Abstract translation: 公开了一种使用帧间预测对视频进行解码的方法。 该方法识别用于启用逆量化和逆变换的一个或多个条件，并且基于所识别的条件选择性地执行以下中的至少一个：针对所获得的残差数据跳过逆量化和逆变换; 对所获得的残差数据进行逆量化，并且对于逆量化剩余数据跳过逆变换; 并对所获得的残差数据进行逆量化，然后逆变换。

公开(公告)号：US10051284B2

公开(公告)日：2018-08-14

申请号：US15456001

申请日：2017-03-10

Applicant: SK TELECOM CO., LTD.

Inventor： Kwanghyun Won ,  Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang

IPC: H04N19/159 ,  H04N19/573 ,  H04N19/52 ,  H04N19/46 ,  H04N19/61 ,  H04N19/567 ,  H04N19/124 ,  H04N19/176

Abstract: A video decoding method using an inter prediction, includes: reconstructing a first differential motion vector and a second differential motion vector of a current block by decoding encoded data; deriving a first predicted motion vector and a second predicted motion vector of the current block from one or more neighboring blocks of the current block; generating a first motion vector of the current block by adding the first candidate motion vector to the first differential motion vector, and a second motion vector of the current block by adding the second candidate motion vector to the second differential motion vector; generating a predicted block of the current block by using the first and second motion vectors; reconstructing a residual block by decoding residual signals included in the encoded data; and adding each pixel value of the predicted block to a corresponding pixel value of the residual block.

公开(公告)号：US09264731B2

公开(公告)日：2016-02-16

申请号：US14693761

申请日：2015-04-22

Applicant: SK TELECOM CO., LTD.

Inventor： Hayoon Kim ,  Byeungwoo Jeon ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim ,  Jungyoup Yang ,  Kwanghyun Won

IPC: H04N11/02 ,  H04N19/513 ,  H04N19/51 ,  H04N19/52 ,  H04N19/503 ,  H04N19/124 ,  H04N19/44 ,  H04N19/61 ,  H04N19/60 ,  H04N19/137

CPC classification number: H04N19/513 ,  H04N19/124 ,  H04N19/137 ,  H04N19/44 ,  H04N19/503 ,  H04N19/52 ,  H04N19/60 ,  H04N19/61

Abstract: A video decoding method using an inter prediction, includes: obtaining a differential motion vector and residual data from encoded data; determining a predicted motion vector; generating a predicted block by performing the inter prediction based on the differential motion vector and the predicted motion vector; identifying one or more conditions for enabling an inverse quantization and an inverse transform; skipping both of the inverse quantization and the inverse transform for the obtained residual data to thereby reconstruct a residual block directly from the obtained residual data, when the one or more identified conditions indicate skipping of both the inverse quantization and the inverse transform; and inversely quantizing the obtained residual data and skipping the inverse transform for the inversely quantized residual data to thereby reconstruct a residual block using the inverse-quantized residual data, when the one or more identified conditions indicate skipping of the inverse transform.

Abstract translation: 使用帧间预测的视频解码方法包括：从编码数据获得差分运动矢量和残差数据; 确定预测运动矢量; 通过基于差分运动矢量和预测运动矢量执行帧间预测来生成预测块; 识别用于启用逆量化和逆变换的一个或多个条件; 当所述一个或多个识别的条件指示所述逆量化和所述逆变换两者都跳过时，跳过所获得的残差数据的逆量化和逆变换，从而从所获得的残差数据直接重建残余块; 并且对所得到的残差数据进行逆量化，并且对于逆量化残差数据跳过逆变换，从而当所述一个或多个识别条件指示所述逆变换的跳过时，使用所述逆量化残差数据来重构残差块。

公开(公告)号：US08908981B2

公开(公告)日：2014-12-09

申请号：US13846494

申请日：2013-03-18

Applicant: SK Telecom Co., Ltd.

Inventor： Sunyeon Kim ,  Byeungwoo Jeon ,  Jungyoup Yang ,  Kwanghyun Won ,  Joohee Moon ,  Yunglyul Lee ,  Haekwang Kim

IPC: G06T9/00 ,  H04N19/583 ,  H04N19/51

CPC classification number: H04N19/521 ,  G06T9/00 ,  H04N19/103 ,  H04N19/107 ,  H04N19/124 ,  H04N19/139 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/52

Abstract: An apparatus and a method for motion vector encoding/decoding, and to an apparatus and a method for image encoding/decoding using same are provided. The apparatus includes a selector of optimal predicted motion vector PMV from candidate motion vector set of current block; a determiner of motion vector prediction mode of current block with selected motion vector prediction mode from multiple motion vector prediction modes by decision criterion prearranged with motion vector decoding apparatus; and an encoder for determining, by determined motion vector prediction mode, optimal PMV or default predicted motion vector into PMV for current motion vector, encoding differential vector between the current block and PMV, and selectively encoding/outputting determined motion vector prediction mode as encoded motion vector prediction mode by the determined motion vector prediction mode. Bit quantity in encoding a motion vector is reduced improving encoding efficiency and preventing decoder crash even at encoding error, improving decoder.

Abstract translation: 提供了一种用于运动矢量编码/解码的装置和方法，以及一种用于使用其进行图像编码/解码的装置和方法。 该装置包括来自当前块的候选运动矢量集合的最佳预测运动矢量PMV的选择器; 通过用运动矢量解码装置预先布置的决策标准，从多个运动矢量预测模式中选择运动矢量预测模式的当前块的运动矢量预测模式的确定器; 以及编码器，用于通过确定的运动矢量预测模式将当前运动矢量的最佳PMV或默认预测运动矢量确定为PMV，对当前块和PMV之间的差分矢量进行编码，并且将所确定的运动矢量预测模式选择性地编码/输出为编码运动 矢量预测模式通过确定的运动矢量预测模式。 编码运动矢量中的位数降低，提高了编码效率，甚至在编码错误时也防止了解码器崩溃，从而改善了解码器。