公开(公告)号：US20190200026A1

公开(公告)日：2019-06-27

申请号：US16278596

申请日：2019-02-18

Applicant: Nokia Technologies Oy

Inventor： Jani LAINEMA ,  Kemal UGUR

IPC: H04N19/182 ,  H04N19/107 ,  H04N19/11 ,  H04N19/196 ,  H04N19/105

Abstract: There is disclosed an apparatus, a method and a computer program for video coding. The apparatus comprises a selector configured for selecting a pixel for prediction; a projection definer configured for determining a projection of said pixel to a set of reference pixels; and a prediction definer configured for selecting one or more reference pixels from said set of reference pixels on the basis of said projection, and using said selected one or more reference pixels to obtain a prediction value for said pixel to be predicted.

公开(公告)号：US20180234685A1

公开(公告)日：2018-08-16

申请号：US15951516

申请日：2018-04-12

Applicant: Nokia Technologies Oy

Inventor： Jani LAINEMA ,  Kemal UGUR

IPC: H04N19/182 ,  H04N19/107 ,  H04N19/196 ,  H04N19/11 ,  H04N19/105

CPC classification number: H04N19/182 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/196 ,  H04N19/197

Abstract: There is disclosed an apparatus, a method and a computer program for video coding. The apparatus comprises a selector configured for selecting a pixel for prediction; a projection definer configured for determining a projection of said pixel to a set of reference pixels; and a prediction definer configured for selecting one or more reference pixels from said set of reference pixels on the basis of said projection, and using said selected one or more reference pixels to obtain a prediction value for said pixel to be predicted.

公开(公告)号：US20170223373A1

公开(公告)日：2017-08-03

申请号：US15490469

申请日：2017-04-18

Applicant: Nokia Technologies Oy

Inventor： Kemal UGUR ,  Jani LAINEMA ,  Antti HALLAPURO

IPC: H04N19/50 ,  H04N19/105

CPC classification number: H04N19/50 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/42 ,  H04N19/523 ,  H04N19/577

Abstract: There is disclosed apparatuses, methods and computer programs for utilizing motion prediction in video coding. A block of pixels of a video representation encoded in a bitstream is read, and a type of the block is determined. If the determining indicates that the block is a block predicted by using two or more reference blocks, a first reference pixel location in a first reference block is determined and a second reference pixel location in a second reference block is determined. The first reference pixel location is used to obtain a first prediction. Said first prediction has a second precision, which is higher than the first precision. The second reference pixel location is used to obtain a second prediction, which also has the second precision. The first prediction and the second prediction are combined to obtain a combined prediction; and the precision of the combined prediction is reduced to the first precision.

公开(公告)号：US20160286241A1

公开(公告)日：2016-09-29

申请号：US14666670

申请日：2015-03-24

Applicant: Nokia Technologies Oy

Inventor： Justin RIDGE ,  Miska Matias HANNUKSELA ,  Jani LAINEMA

IPC: H04N19/98 ,  H04N19/186

CPC classification number: H04N19/98 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46

Abstract: A method comprising: obtaining a video bitstream comprising a high dynamic range (HDR) video representation; obtaining one or more tone mapping operators and an indication of at least one tone mapping operator to be applied; and modifying the HDR video representation into a low dynamic range (LDR) video representation using said at least one tone mapping operator determined by said indication.

Abstract translation: 一种方法，包括：获得包括高动态范围（HDR）视频表示的视频比特流; 获得一个或多个音调映射运算符和要应用的至少一个音调映射运算符的指示; 以及使用由所述指示确定的所述至少一个音调映射运算符将所述HDR视频表示修改为低动态范围（LDR）视频表示。

公开(公告)号：US20160232939A1

公开(公告)日：2016-08-11

申请号：US14618650

申请日：2015-02-10

Applicant: Nokia Technologies Oy

Inventor： Vinod Kumar MALAMAL VADAKITAL ,  Miska Matias HANNUKSELA ,  Jani LAINEMA

IPC: G11B27/00

CPC classification number: G11B27/031 ,  G11B27/309

Abstract: There are disclosed various methods, apparatuses and computer program products for video encoding. According to an embodiment, an encoding method comprises including a static media item into a container file; including one or more media tracks into the container file; indicating, in the file, that the static media item and one or more entities form a group; and indicating, in the file, a grouping type for the group. According to an embodiment, a decoding method comprises parsing, from a container file, that a static media item and one or more entities form a group; parsing, from the container file, a grouping type for the group; determining a processing for the static media item and the one or more of the entities based on the group and the grouping type.

Abstract translation: 公开了用于视频编码的各种方法，装置和计算机程序产品。 根据实施例，一种编码方法包括将静态媒体项目包括在容器文件中; 包括一个或多个媒体轨道进入容器文件; 在文件中指示静态媒体项目和一个或多个实体组成一个组; 并在文件中指示组的分组类型。 根据实施例，解码方法包括从容器文件解析静态媒体项目和一个或多个实体形成组; 从容器文件中解析组的分组类型; 基于组和分组类型确定静态媒体项目和一个或多个实体的处理。

公开(公告)号：US20250056009A1

公开(公告)日：2025-02-13

申请号：US18721281

申请日：2022-11-23

Applicant: Nokia Technologies Oy

Inventor： Limin WANG ,  Seungwook HONG ,  Krit PANUSOPONE ,  Jani LAINEMA

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196

Abstract: In a system performing encoding or decoding for video, given a coding tree unit with surrounding reference samples on four sides of the coding tree unit, a local prediction block for a current coding unit is built. The local prediction block is used for the encoding or decoding of the video.

公开(公告)号：US20240314336A1

公开(公告)日：2024-09-19

申请号：US18577027

申请日：2022-06-22

Applicant: Nokia Technologies Oy

Inventor： Jani LAINEMA

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/50

CPC classification number: H04N19/186 ,  H04N19/176 ,  H04N19/50

Abstract: A method comprising: calculating at least two parameters (a, b) that define a mapping from a first color component (Y) to a second color component (Cb/Cr), the at least two parameters (a, b) including at least a slope parameter (a) and an offset parameter (b); determining an update term (u) to the slope parameter (a); applying the update term (u) to the slope parameter (a) by adding the update term (u) to the value of the slope parameter (a) to generate an updated slope parameter (a); determining a reference value (yr) of first color component (Y); and calculating an updated offset parameter (b) based on the reference value (yr) of the first color component (Y) and the updated slope parameter (a′)

公开(公告)号：US20240064326A1

公开(公告)日：2024-02-22

申请号：US18497312

申请日：2023-10-30

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Kemal UGUR ,  Jani LAINEMA ,  Antti HALLAPURO

IPC: H04N19/50 ,  H04N19/42 ,  H04N19/523 ,  H04N19/577 ,  H04N19/105

CPC classification number: H04N19/50 ,  H04N19/42 ,  H04N19/523 ,  H04N19/577 ,  H04N19/105 ,  H04N19/176

Abstract: Apparatuses, methods and computer programs are provided for utilizing motion prediction in video coding. A block of pixels of a video representation encoded in a bitstream is read, and a type of the block is determined. If the determining indicates that the block is a block predicted by using two or more reference blocks, a first reference pixel location in a first reference block is determined and a second reference pixel location in a second reference block is determined. The first reference pixel location is used to obtain a first prediction. The first prediction has a second precision, which is higher than the first precision. The second reference pixel location is used to obtain a second prediction, which also has the second precision. The first prediction and the second prediction are combined to obtain a combined prediction; and the precision of the combined prediction is reduced to the first precision.

公开(公告)号：US20230196072A1

公开(公告)日：2023-06-22

申请号：US17644622

申请日：2021-12-16

Applicant: Nokia Technologies Oy

Inventor： Nannan ZOU ,  Francesco CRICRÌ ,  Honglei ZHANG ,  Hamed REZAZADEGAN TAVAKOLI ,  Jani LAINEMA ,  Miska Matias HANNUKSELA

IPC: G06N3/04 ,  G06N3/08

CPC classification number: G06N3/0454 ,  G06N3/08

Abstract: Various embodiments provide an apparatus, a method, and a computer program product. An example apparatus includes at least one processor; and at least one non-transitory memory comprising computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform: determine a subset of parameters to overfit from a set of candidate parameters of decoder side neural network to be overfitted (OPs); wherein the subset of parameters to overfit is smaller than the set of candidate parameters to be overfitted; and overfit the determined subset of parameters.

公开(公告)号：US20230169372A1

公开(公告)日：2023-06-01

申请号：US17457136

申请日：2021-12-01

Applicant: Nokia Technologies Oy

Inventor： Nannan ZOU ,  Francesco CRICRÌ ,  Honglei ZHANG ,  Hamed REZAZADEGAN TAVAKOLI ,  Jani LAINEMA ,  Miska Matias HANNUKSELA

IPC: G06N7/00 ,  G06V10/84 ,  G06V10/46 ,  G06V10/44 ,  H04N19/176 ,  H04N19/61

CPC classification number: G06N7/005 ,  G06V10/84 ,  G06V10/467 ,  G06V10/44 ,  H04N19/176 ,  H04N19/61

Abstract: Various embodiments provide an apparatus, a method, and a computer program product. 1. An apparatus incudes at least one processor; and at least one non-transitory memory includes computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: perform an overfitting operation, at an encoder side, to obtain an overfitted probability model, wherein overfitting comprises one or more training operations applied to a probability model, wherein one or more parameters of the probability model are trained; use the overfitted probability model to provide probability estimates to a lossless codec or a substantially lossless codec for encoding data or a portion of the data; and signal information to a decoder on whether to perform the overfitting operation at the decoder side.