公开(公告)号：US09942567B2

公开(公告)日：2018-04-10

申请号：US15385471

申请日：2016-12-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chan-yul Kim ,  Jae-hyun Kim ,  Jeong-hoon Park

IPC: H04N19/196 ,  H04N19/60 ,  H04N19/70 ,  H04N19/13 ,  H04N19/122 ,  H04N19/463 ,  H04N19/18 ,  H04N19/91 ,  H04N19/44 ,  H04N19/136 ,  H04N19/96 ,  H04N19/157 ,  H03M7/40 ,  H04N19/184

CPC classification number: H04N19/13 ,  H03M7/4018 ,  H03M7/4075 ,  H04N19/115 ,  H04N19/122 ,  H04N19/136 ,  H04N19/139 ,  H04N19/157 ,  H04N19/18 ,  H04N19/184 ,  H04N19/196 ,  H04N19/44 ,  H04N19/463 ,  H04N19/60 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: An video decoding apparatus including a parser which obtains bit strings corresponding to current transformation coefficient level information by arithmetic decoding a bitstream based on a context model; a parameter determiner which determines a current binarization parameter by updating or maintaining a previous binarization parameter based on a comparison of a threshold and a size of a previous transformation coefficient; a syntax element restorer which obtains the current transformation coefficient level information by performing de-binarization of the bit strings using the determined current binarization parameter and generates a size of a current transformation coefficient using the current transformation coefficient level information, wherein the current binarization parameter has a value equal to or smaller than a predetermined value.

公开(公告)号：US09924179B2

公开(公告)日：2018-03-20

申请号：US14760265

申请日：2014-01-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byeong-doo Choi ,  Min-woo Park ,  Jae-won Yoon ,  Chan-yul Kim ,  Jeong-hoon Park

IPC: H04N7/12 ,  H04N15/00 ,  H04N19/187 ,  H04N19/129 ,  H04N19/136 ,  H04N19/107 ,  H04N19/70 ,  H04N19/30 ,  H04N19/44

CPC classification number: H04N19/187 ,  H04N19/107 ,  H04N19/129 ,  H04N19/136 ,  H04N19/30 ,  H04N19/44 ,  H04N19/70

Abstract: Provided are a method and apparatus for decoding a multi-layer video, and a method and apparatus for encoding a multi-layer video. The method includes obtaining a NAL unit including encoding information and type information of a first layer picture and identifying a type of the first layer picture, obtaining a NAL unit including encoding information and type information of a second layer picture and identifying a type of the second layer picture that is set to be the same as the type of the first layer picture having a same POC as the second layer picture, and decoding the first layer picture and the second layer picture based on the identified first layer picture type and the identified second layer picture type.

公开(公告)号：US09699471B2

公开(公告)日：2017-07-04

申请号：US15386625

申请日：2016-12-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-o Park ,  Chan-yul Kim ,  Kwang-pyo Choi ,  Jeong-hoon Park

IPC: H04N19/00 ,  H04N19/44 ,  H04N19/70

CPC classification number: H04N19/152 ,  H04N19/44 ,  H04N19/70

Abstract: Provided are methods and apparatuses for encoding and decoding an image. The method of encoding includes: determining a maximum size of a buffer to decode each image frame by a decoder, a number of image frames to be reordered, and latency information of an image frame having a largest difference between an encoding order and a display order from among image frames that form an image sequence, based on an encoding order the image frames that form the image sequence, an encoding order of reference frames referred to by the image frames, a display order of the image frames, and a display order of the reference frames; and adding, to a mandatory sequence parameter set, a first syntax indicating the maximum size of the buffer, a second syntax indicating the number of image frames to be reordered, and a third syntax indicating the latency information.

公开(公告)号：US09693076B2

公开(公告)日：2017-06-27

申请号：US14591417

申请日：2015-01-07

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Industry-Academic Cooperation Foundation, Yonsei University

Inventor： Seung-soo Jeong ,  Won-woo Ro ,  Ho-cheon Wey ,  Kyung-ah Kim ,  Deok-ho Kim ,  Min-woo Kim ,  Chan-yul Kim

IPC: H04N19/51 ,  H04N19/52 ,  H04N19/537 ,  H04N19/567

CPC classification number: H04N19/567 ,  H04N19/51 ,  H04N19/52 ,  H04N19/537

Abstract: A video encoding and decoding methods and apparatuses for performing the methods thereof are provided. The video encoding method includes: determining a region in a current image having a change in at least one of a scale and an angle with respect to a reference image; generating variation information representing a variation in at least one of the scale and the angle between the region in the current image and a reference region in the reference image corresponding to the region in the current image; and encoding residual information representing a difference between a predicted sample value from the reference image and a sample value of the current image based on the generated variation information.

公开(公告)号：US09560370B2

公开(公告)日：2017-01-31

申请号：US15221652

申请日：2016-07-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-o Park ,  Chan-yul Kim ,  Kwang-pyo Choi ,  Jeong-hoon Park

IPC: H04N19/00 ,  H04N19/44 ,  H04N19/70

CPC classification number: H04N19/152 ,  H04N19/44 ,  H04N19/70

Abstract: Provided are methods and apparatuses for encoding and decoding an image. The method of encoding includes: determining a maximum size of a buffer to decode each image frame by a decoder, a number of image frames to be reordered, and latency information of an image frame having a largest difference between an encoding order and a display order from among image frames that form an image sequence, based on an encoding order the image frames that form the image sequence, an encoding order of reference frames referred to by the image frames, a display order of the image frames, and a display order of the reference frames; and adding, to a mandatory sequence parameter set, a first syntax indicating the maximum size of the buffer, a second syntax indicating the number of image frames to be reordered, and a third syntax indicating the latency information.

Abstract translation: 提供了用于对图像进行编码和解码的方法和装置。 编码方法包括：确定由解码器对每个图像帧进行解码的缓冲器的最大大小，要重新排序的图像帧的数量，以及编码顺序和显示顺序之间的最大差异的图像帧的等待时间信息 从形成图像序列的图像帧中，基于编码顺序，形成图像序列的图像帧，由图像帧引用的参考帧的编码顺序，图像帧的显示顺序和显示顺序 参考框架; 并且向强制性序列参数集合添加指示缓冲器的最大大小的第一语法，指示要重新排序的图像帧的数量的第二语法，以及指示等待时间信息的第三语法。

公开(公告)号：US09451269B2

公开(公告)日：2016-09-20

申请号：US14394786

申请日：2013-04-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hak-sup Song ,  Jae-hwan Joo ,  Chan-yul Kim ,  Jong-bum Choi ,  Jae-hyun Kim ,  Jeong-hoon Park ,  Kyo-hyuk Lee

IPC: G06K9/36 ,  H04N19/154 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/196 ,  H04N19/61 ,  H04N19/96 ,  H04N19/86

CPC classification number: H04N19/154 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/198 ,  H04N19/61 ,  H04N19/86 ,  H04N19/96

Abstract: A method of determining an offset includes dividing a current image into a plurality of blocks, determining a category of pixels in each of the plurality of blocks based on values of neighboring pixels, determining an offset value for pixels belonging to the category, and adjusting the offset value based on characteristics of the category and a background pixel value of each of the pixels. The offset value is an average of differences between values of original images and restored images of pixels belonging to one category. The background pixel value is an average of values of pixels in a background pixel block to which the pixels belong among background pixel blocks divided to calculate a background pixel value.

Abstract translation: 确定偏移的方法包括：将当前图像划分为多个块，基于相邻像素的值来确定多个块中的每个块中的像素的类别，确定属于该类别的像素的偏移值，以及调整 基于类别的特性和每个像素的背景像素值的偏移值。 偏移值是原始图像的值与属于一个类别的像素的还原图像之间的差的平均值。 背景像素值是被划分的像素属于背景像素块的背景像素块中的像素的值的平均值，以计算背景像素值。

公开(公告)号：US20150288970A1

公开(公告)日：2015-10-08

申请号：US14432081

申请日：2013-09-30

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY

Inventor： Young-o Park ,  Kwang-pyo Choi ,  Chan-yul Kim ,  Byeong-doo Choi ,  Won-woo Ro ,  Kyung-ah Kim ,  Deok-ho Kim ,  Min-woo Kim

IPC: H04N19/159 ,  H04N19/124 ,  H04N19/44 ,  H04N19/91 ,  H04N19/51

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/177 ,  H04N19/31 ,  H04N19/436 ,  H04N19/44 ,  H04N19/51 ,  H04N19/70 ,  H04N19/91

Abstract: Provided is a video encoding method for a parallel process. The video encoding method includes performing an inter prediction and an intra prediction for pictures included in a group of picture (GOP) and determining an encoding order and reference dependency between the pictures included in the GOP, and generating a predetermined data unit including reference relation information generated based on the encoding order and reference dependency between the pictures included in the GOP.

Abstract translation: 提供了一种用于并行处理的视频编码方法。 视频编码方法包括对包括在一组图像（GOP）中的图像执行帧间预测和帧内预测，​​并确定包括在GOP中的图像之间的编码顺序和参考相关性，并生成包括参考关系信息的预定数据单元 基于GOP中包含的图像之间的编码顺序和参考依赖关系生成。

公开(公告)号：US20150237376A1

公开(公告)日：2015-08-20

申请号：US14432414

申请日：2013-09-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Chan-yul Kim ,  Tammy Lee

IPC: H04N19/65 ,  H04N19/30 ,  H04N19/46 ,  H04N19/132 ,  H04N19/174 ,  H04N19/172 ,  H04N19/14 ,  H04N19/182 ,  H04N19/50 ,  H04N19/187

CPC classification number: H04N19/65 ,  H04N19/117 ,  H04N19/132 ,  H04N19/14 ,  H04N19/172 ,  H04N19/174 ,  H04N19/182 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/50 ,  H04N19/59 ,  H04N19/82 ,  H04N19/86

Abstract: Provided are scalable video encoding and decoding methods and apparatuses for compensating for inter-layer prediction errors between different layer images by using sample adaptive offsets (SAOs). The scalable video decoding method includes: obtaining inter-layer SAO use information indicating whether to compensate for prediction errors according to inter-layer prediction between a base layer reconstructed image and an enhancement layer prediction image, and SAO parameters indicating a SAO type of the enhancement layer prediction image and an offset, from a received enhancement layer stream; determining the SAO type of the enhancement layer prediction image and offsets corresponding to the prediction errors classified according to categories, from the obtained SAO parameters; and generating an enhancement layer reconstructed image by using the enhancement layer prediction image compensated by the determined offsets by determining a category of a current sample for each pixel location of the enhancement layer prediction image.

Abstract translation: 提供了通过使用采样自适应偏移（SAO）来补偿不同层图像之间的层间预测误差的可扩展视频编码和解码方法和装置。 可扩展视频解码方法包括：根据基层重构图像和增强层预测图像之间的层间预测，获得指示是否补偿预测误差的层间SAO使用信息，以及指示SAO类型增强的SAO参数 层预测图像和来自接收到的增强层流的偏移; 根据获得的SAO参数确定增强层预测图像的SAO类型和与根据类别分类的预测误差相对应的偏移量; 以及通过使用由所确定的偏移补偿的增强层预测图像，通过确定增强层预测图像的每个像素位置的当前样本的类别来生成增强层重建图像。

公开(公告)号：US20150237372A1

公开(公告)日：2015-08-20

申请号：US14434294

申请日：2013-10-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byeong-doo Choi ,  Jeong-hoon Park ,  Chan-yul Kim

IPC: H04N19/597 ,  H04N19/169 ,  H04N19/187

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/157 ,  H04N19/187 ,  H04N19/188 ,  H04N19/1883 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

Abstract: Provided are methods of encoding and decoding multilayer video. The multilayer video encoding method includes: encoding an image sequence of each of a plurality of layers constituting multilayer video by using inter layer prediction; determining a reference layer referred to by the image sequence of each layer based on a result of the encoding; adding reference layer information of each layer to a first data unit comprising information commonly applied to the image sequence included in the multilayer video; andwhen a reference layer referred to by the image sequence of each layer is changed at a predetermined point, adding change information of the reference layer to a second data unit.

Abstract translation: 提供了对多层视频进行编码和解码的方法。 多层视频编码方法包括：通过使用层间预测来对构成多层视频的多个层中的每一层的图像序列进行编码; 基于编码的结果确定每层的图像序列所参照的参照层; 将每个层的参考层信息添加到包括通常应用于包括在多层视频中的图像序列的信息的第一数据单元; 并且当由每个层的图像序列引用的参考层在预定点改变时，将参考层的改变信息添加到第二数据单元。