公开(公告)号：US10547872B2

公开(公告)日：2020-01-28

申请号：US15744597

申请日：2016-08-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwang-hyun Won ,  Chan-yul Kim ,  Sun-il Lee

IPC: H04N19/625 ,  H04N19/146 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

Abstract: An encoding apparatus encoding a bitstream including an image frame is disclosed. The encoding apparatus comprises a selection unit for selecting a plurality of pixels including non-zero transform coefficients in a transform coefficient block constituting an image frame, an inverse transform unit for generating a plurality of groups of code candidates including combinations of codes assignable to the non-zero transform coefficients of the selected plurality of pixels and generating candidate reconstruction blocks by performing an inverse transform on each of the transform coefficient blocks in which the sign is assigned to the non-zero transform coefficients according to the generated plurality of groups of code candidates, a cost calculation unit for calculating a cost on the basis of a pixel value difference between pixel values of a plurality of pixels selected from among the generated candidate reconstruction blocks and pixel values of other pixels adjacent to the selected plurality of pixels and an encoding unit for assigning different predetermined codewords to a plurality of groups of code candidates on the basis of the calculated cost and encoding one codeword of the codewords into encoding information of non-zero transform coefficients of the selected plurality of pixels.

公开(公告)号：US10511838B2

公开(公告)日：2019-12-17

申请号：US15572638

申请日：2015-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho Choi ,  Chan-yul Kim

IPC: H04N19/14 ,  H04N19/82 ,  H04N19/184 ,  H04N19/182 ,  H04N19/117 ,  H04N19/107 ,  H04N19/50

Abstract: Provided are a video encoding method and apparatus and a video decoding method and apparatus for producing a reconstructed video having a minimum error with respect to an original video. The video decoding method includes parsing an edge correction parameter from a bitstream, the edge correction parameter being used to correct a reconstructed pixel included in a current block, determining whether the reconstructed pixel is included in an edge region according to a first threshold value included in the edge correction parameter, determining whether the reconstructed pixel is to be corrected according to a second threshold value included in the edge correction parameter when the reconstructed pixel is included in the edge region, and compensating for a sample value of the reconstructed pixel according to a third threshold value included in the edge correction parameter when the reconstructed pixel is to be corrected.

公开(公告)号：US10454904B2

公开(公告)日：2019-10-22

申请号：US15468567

申请日：2017-03-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Mi-suk Huh ,  Hee-kwan Lee ,  Kwang-pyo Choi ,  Chan-yul Kim ,  Seog-chung Seo

IPC: H04L29/06 ,  H04L9/08 ,  H04L9/14 ,  H04L9/30 ,  H04L9/32

Abstract: The present disclosure relates to technologies for a sensor network, machine-to-machine (M2M) communication, machine type communication (MTC), and an Internet of Things (IoT) network. The present disclosure may be used in intelligence services based on such technologies (smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, and security and safety-related services). Provided is a method of transmitting encrypted data for preventing identification of transmitting and receiving devices, from a first device to a second device, the method including: generating an encryption key for encrypting data; generating key identification information by using the generated encryption key and encrypting the data; and transmitting a data set including the encrypted data and the key identification information to the second device.

公开(公告)号：US10448050B2

公开(公告)日：2019-10-15

申请号：US15096666

申请日：2016-04-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byeong-doo Choi ,  Min-woo Park ,  Jin-young Lee ,  Yong-jin Cho ,  Chan-yul Kim ,  Ho-cheon Wey

IPC: H04N19/597 ,  H04N19/196 ,  H04N19/33 ,  H04N21/44 ,  H04N19/30 ,  H04N19/423 ,  H04N19/70 ,  H04N19/31 ,  H04N19/44

Abstract: Provided are multilayer video encoding/decoding methods and apparatuses. A multilayer video decoding method may comprise obtaining, from a bitstream, information indicating a maximum size of a decoded picture buffer (DPB) with respect to a layer set comprising a plurality of layers; determining a size of the DPB with respect to the layer set based on the obtained information indicating the maximum size of the DPB; and storing a decoded picture of the layer set in the DPB of the determined size.

公开(公告)号：US10432947B2

公开(公告)日：2019-10-01

申请号：US15771006

申请日：2016-11-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Na-rae Choi ,  Min-woo Park ,  Chan-yul Kim

IPC: H04N19/159 ,  H04N19/117 ,  H04N19/182 ,  H04N19/80 ,  H04N19/176 ,  H04N19/147 ,  H04N19/105 ,  H04N19/11 ,  H04N19/33 ,  H04N19/625 ,  H04N19/119 ,  H04N19/96 ,  H04N19/14

Abstract: Provided are a video decoding method and a video decoding apparatus capable of performing the video decoding method. The video decoding method includes: determining neighboring pixels of a current block to be used for performing intra prediction on the current block; acquiring, from a bitstream, information indicating one of a plurality of filtering methods used on the neighboring pixels; selecting one of the plurality of filtering methods according to the acquired information; filtering the neighboring pixels by using the selected filtering method; and performing the intra prediction on the current block by using the filtered neighboring pixels, wherein the plurality of filtering methods comprise a spatial domain filtering method and a frequency domain filtering method, wherein the spatial domain filtering method filters the neighboring pixels in a spatial domain, and the frequency domain filtering method filters the neighboring pixels in a frequency domain.

公开(公告)号：US09967570B2

公开(公告)日：2018-05-08

申请号：US15676155

申请日：2017-08-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/00 ,  H04N19/152 ,  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. 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：US09386323B2

公开(公告)日：2016-07-05

申请号：US14645552

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

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: Methods and apparatuses for decoding and encoding video are provided. A method of decoding video includes obtaining bit strings corresponding to current transformation coefficient level information by arithmetic decoding a bitstream based on a context model; determining 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; obtaining the current transformation coefficient level information by performing de-binarization of the bit strings using the determined current binarization parameter; and generating 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.

Abstract translation: 提供了解码和编码视频的方法和装置。 解码视频的方法包括：通过基于上下文模型对位流进行算术解码来获得与当前变换系数电平信息相对应的位串; 基于阈值和先前变换系数的大小的比较，通过更新或维持先前的二值化参数来确定当前的二值化参数; 通过使用所确定的当前二值化参数来执行位串的二进制化来获得当前变换系数电平信息; 以及使用当前变换系数水平信息生成当前变换系数的大小，其中当前二值化参数具有等于或小于预定值的值。

公开(公告)号：US20150264384A1

公开(公告)日：2015-09-17

申请号：US14434345

申请日：2013-10-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/513 ,  H04N19/169 ,  H04N19/597 ,  H04N19/172 ,  H04N19/187

CPC classification number: H04N19/513 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/46 ,  H04N19/503 ,  H04N19/597 ,  H04N19/70

Abstract: A video stream decoding method includes obtaining random access point (RAP) reference layer number information indicating the number of layers referred to for performing inter layer prediction on RAP images among current layer images and non-RAP reference layer number information indicating the number of different layers referred to for performing inter layer prediction on non-RAP images, from a video stream regarding images encoded for a plurality of layers; obtaining RAP reference layer identification information for each layer referred to for predicting the RAP images based on the obtained RAP reference layer number information, from the video stream; obtaining non-RAP reference layer identification information for each layer referred to for predicting the non-RAP images based on the obtained non-RAP reference layer number information, from the video stream; reconstructing an RAP image of a current layer based on a layer image indicated by the obtained RAP reference layer identification information; and reconstructing a non-RAP image of the current layer based on a layer image indicated by the obtained non-RAP reference layer identification information.

Abstract translation: 视频流解码方法包括：获取当前层图像中指示用于对RAP图像执行帧间预测的层数的随机接入点（RAP）参考层号码信息，以及指示不同层数的非RAP参考层号码信息 用于从关于针对多个层编码的图像的视频流执行非RAP图像的帧间预测; 基于获得的RAP参考层号码信息，从视频流获取参考用于预测RAP图像的每个层的RAP参考层标识信息; 基于所获得的非RAP参考层号码信息，从所述视频流获取参考用于预测所述非RAP图像的每个层的非RAP参考层标识信息; 基于由所获得的RAP参考层标识信息指示的层图像，重建当前层的RAP图像; 并且基于由所获得的非RAP参考层标识信息指示的层图像来重建当前层的非RAP图像。

公开(公告)号：US20150086124A1

公开(公告)日：2015-03-26

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: H04N19/154 ,  H04N19/176

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：US20140301473A1

公开(公告)日：2014-10-09

申请号：US14354721

申请日：2012-10-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-o Park ,  Il-koo Kim ,  Chan-yul Kim ,  Kwang-pyo Choi

IPC: H04N19/64 ,  H04N19/583

CPC classification number: H04N19/19 ,  H04N19/196 ,  H04N19/463 ,  H04N19/58

Abstract: Provided are an inter prediction method and a motion compensation method. The inter prediction method includes: performing inter prediction on a current image by using a long-term reference image stored in a decoded picture buffer; determining residual data and a motion vector of the current image generated via the inter prediction; and determining least significant bit (LSB) information as a long-term reference index indicating the long-term reference image by dividing picture order count (POC) information of the long-term reference image into most significant bit (MSB) information and the LSB information.

Abstract translation: 提供帧间预测方法和运动补偿方法。 帧间预测方法包括：通过使用存储在解码图像缓冲器中的长期参考图像对当前图像执行帧间预测; 确定通过帧间预测产生的当前图像的残差数据和运动矢量; 以及通过将所述长期参考图像的图像顺序计数（POC）信息划分为最高有效位（MSB）信息和LSB（LSB））来确定最低有效位（LSB）信息作为指示长期参考图像的长期参考索引 信息。