公开(公告)号：GB2554686A

公开(公告)日：2018-04-11

申请号：GB201616808

申请日：2016-10-04

Applicant: NOKIA TECHNOLOGIES OY

Inventor： KASHYAP KAMMACHI SREEDHAR ,  MISKA HANNUKSELA ,  PAYMAN AFLAKI BENI

IPC: H04N19/59 ,  H04N19/132 ,  H04N19/17 ,  H04N19/85

Abstract: An encoding method comprises resampling a plurality of sample rows of a picture into a plurality of resampled sample rows; and rearranging the resampled sample rows along a nested polygonal chain scan (or rectangular ring packing) into a rearranged sample array. The method may be used in picture encoding or decoding, the rearranged array used as a reference for intra prediction, inter prediction or inter-layer prediction. Plural sample rows of several picture regions may be resampled into plurality resampled sample rows, and rearranged into several rearranged sample arrays, which may be packed into a single frame or different frames. The nested polygonal chain scan may comprise arranging the top-most sample row or the bottommost sample row to an innermost polygonal chain in the rearranged sample array, and arranging sample row furthest away from the top-most or bottom-most sample row to an outmost polygonal chain. A decoding method comprises obtaining a rearranged sample array comprising a plurality of resampled sample rows following a nested polygonal chain scan; extracting a resampled sample row by treating a polygonal chain of the nested polygonal chain scan as a one-dimensional signal along a scan order; resampling the resampled sample row into a sample row; and arranging the sample row into a sample array.

公开(公告)号：GB2538531A

公开(公告)日：2016-11-23

申请号：GB201508620

申请日：2015-05-20

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MISKA HANNUKSELA

IPC: H04N19/39 ,  H04N19/187 ,  H04N21/2343 ,  H04N21/438

Abstract: Indications are provided in a media presentation description (MPD) and a media segment for enabling a client to request the reception of a first set of base-layer (BL) pictures separately from a second set of BL pictures, wherein the first set lacks dependencies on the second set and the second set is not used as a reference for inter-layer prediction of the enhancement-layer pictures. Clients (e.g. DASH clients) therefore need only obtain the BL pictures of the first Thinned BL set for correct decoding of the enhancement layer, and indications to this effect may be provided. The first and second sets may respectively consist of the BL pictures of a first and second set of temporal layers, wherein the first set differs from the second. A first set of URLs may be associated with the first set of BL pictures, and information indicative of the first set of URLs may be included in the MPD, which itself may comply with MPEG-DASH. A first and second Representation may be associated with the first and second set of BL pictures. Information of a byte range covering ranges of the BL pictures may be included.

公开(公告)号：BR112022012990A2

公开(公告)日：2022-11-16

申请号：BR112022012990

申请日：2020-12-17

Applicant: NOKIA TECHNOLOGIES OY

Inventor： KASHYAP KAMMACHI SREEDHAR ,  EMRE AKSU ,  MISKA HANNUKSELA

IPC: H04N21/854 ,  G06F16/71 ,  H04N13/172 ,  H04N19/119 ,  H04N19/33 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/4402 ,  H04N21/845

Abstract: UM MÉTODO, UM APARELHO E UM PRODUTO DE PROGRAMA DE COMPUTADOR PARA CODIFICAÇÃO DE VÍDEO E DECODIFICAÇÃO DE VÍDEO. As modalidades se refere a um método para gravar, em um arquivo recipiente, duas ou mais faixas de subimagem; gravar, no arquivo recipiente, uma faixa de base, que é destinada a ser resolvida em um fluxo de bits de vídeo; indicar, na faixa de base, um modelo de subimagens; gravar, no arquivo recipiente, uma entrada de descrição de grupo de amostra indicativa de uma primeira faixa de subimagem ou um grupo de faixas de subimagem para cada posição de subimagem no modelo de subimagens, em que a primeira faixa de subimagem compreende a sequência de subimagem para a respectiva posição de subimagem e em que qualquer faixa dentre o grupo de faixas de subimagem compreende uma sequência de subimagem válida para a respectiva posição de subimagem; e indicar no arquivo recipiente, amostras da faixa de base para as quais a entrada de descrição de grupo de amostra se destina a ser usada para reconstruir o fluxo de bits de vídeo. As modalidades também se referem a um método para análise, assim como equipamento técnico para implementar o método para gravação e o método para análise.

公开(公告)号：GB2548358A

公开(公告)日：2017-09-20

申请号：GB201604346

申请日：2016-03-15

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MISKA HANNUKSELA ,  ALIREZA AMINLOU ,  RAMIN GHAZNAVI YOUVALARI

IPC: H04N19/88 ,  G03B37/04 ,  G06T9/00 ,  H04N5/232

Abstract: Method, apparatus and computer program for coding a non-rectangular effective image representing a 360 degree panoramic image. A non-rectangular effective picture area representing an omnidirectional panorama picture is determined 1210 and a mapped 360-degree panorama picture covering the effective picture area is obtained 1220. A non-rectangular and at least partially block-aligned reshaped picture is obtained 1230 from the 360-degree image using a first processing 1240 comprising identifying a boundary block containing a boundary of the effective picture area and performing at least one of removing zero or more samples of the peripheral block or setting sample values of samples in the edge block and outside the effective picture area by copying sample values from an opposite-side boundary region of the effective picture area and/or moving samples from an opposite-side boundary region of the effective picture area. A second processing to the reshaped non-rectangular image is used 1250 to obtain a rectangular picture and the rectangular picture is encoded 1260 into a bitstream. Corresponding methods, apparatuses and computer programs for decoding 360 degree panoramic images are also claimed.

公开(公告)号：GB2538998A

公开(公告)日：2016-12-07

申请号：GB201509569

申请日：2015-06-03

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MISKA HANNUKSELA ,  EMRE AKSU

IPC: H04N21/2343 ,  H04N19/30 ,  H04N21/63

Abstract: A method comprises: obtaining a coded first image and a coded second image, wherein the coded second image depends on the coded first image; determining that, when displaying a decoded second image decoded from the coded second image, it is allowed to first display a decoded first image decoded from the coded first image; and in response to said determination: including the coded first and second images into a first image container file and a second image container file respectively; indicating, in a markup language code, that the image container files are alternatives and that the second image container file depends on the first image container file. Also claimed is a method comprising parsing, from a markup language code, that a first and second image container files are alternatives and that the second depends on the first and requesting and decoding files. When the second image container file is to be displayed the first image container file may be displayed first to achieve progressive refinement. The coded first image may be a base layer image and the coded second image may be an enhancement layer image.

公开(公告)号：AU2008206744B2

公开(公告)日：2011-09-22

申请号：AU2008206744

申请日：2008-01-17

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MISKA HANNUKSELA ,  YE-KUI WANG

IPC: H04N21/236

Abstract: A system and method of modifying error resiliency features by conveying temporal level 0 picture indices, such as t10_pic_idx, within an SEl message instead of optionally including them in the NAL unit header is provided. In addition, a mechanism is provided for enabling repetition of any SEl messages in Real-Time Transport Protocol (RTP) packets. Enabling such repetition of any SEl messages facilitates detection of lost temporal level 0 pictures on the basis of any received packet.

公开(公告)号：BR112015006178B1

公开(公告)日：2022-11-16

申请号：BR112015006178

申请日：2013-09-18

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MISKA HANNUKSELA ,  DMYTRO RUSANOVSKYY

IPC: H04N13/161 ,  H04N19/597

Abstract: MÉTODO; APARELHO; E PRODUTO DE PROGRAMA DE COMPUTADOR São revelados vários métodos, aparelhos e produtos de programa de computador para a codificação de vídeo. Em algumas modalidades, o método para codificação compreende examinar a disponibilidade de um bloco de profundidade co-localizado com um bloco de textura, determinar um método de predição para um bloco de textura com base na disponibilidade de um bloco de profundidade co-localizado; e derivar um primeiro bloco de predição para o bloco de textura com base na disponibilidade do bloco de profundidade co-localizado. O método compreende ainda derivar um primeiro bloco de predição para o bloco de textura com base no bloco de profundidade co-localizado, se o bloco de profundidade co-localizado estiver disponível, e, de outro modo, derivar um segundo bloco de predição para o bloco de textura sem usar o bloco de profundidade co-localizado. Também são revelados método correspondente para diversos métodos, aparelhos e produtos de programa de computador para decodificação de vídeo.

公开(公告)号：BRPI0810699B1

公开(公告)日：2021-03-02

申请号：BRPI0810699

申请日：2008-05-02

Applicant: NOKIA CORP ,  NOKIA TECHNOLOGIES OY

Inventor： MISKA HANNUKSELA

Abstract: registro de fluxo de mídia em uma hint track de recepção de um arquivo de armazenamento multimídia é mostrado um método para o armazenamento de fluxos de mídia em tempo real em um arquivo de armazenamento multimídia (1200). o conteúdo de mídia é gravado em um arquivo de acordo com um formato de arquivo que forneça instruções para a construção de pacotes de mídia. pelo menos um pacote de mídia recebido é representado no arquivo usando as instruções para a construção de pacotes de mídia. pelo menos um dos pacotes de mídia recebidos no arquivo também é associado com uma indicação de que ele pode conter erros. esta tecnologia gera a vantagem de que os pacotes incorretamente transmitidos são fáceis de detectar, o que pode ser utilizado para evitar uma falha do dispositivo de reprodução.

公开(公告)号：GB2575628A

公开(公告)日：2020-01-22

申请号：GB201811197

申请日：2018-07-09

Applicant: NOKIA TECHNOLOGIES OY

Inventor： FRANCESCO CRICRI ,  ANTTI HALLAPURO ,  MISKA HANNUKSELA ,  JANI LAINEMA ,  EMRE BARIS AKSU ,  CAGLAR AYTEKIN ,  RAMIN GHAZNAVI YOUVALARI

IPC: H04N19/50 ,  G06N3/02 ,  G06N3/04 ,  G06N3/08 ,  H04N19/103 ,  H04N19/136 ,  H04N19/14 ,  H04N19/172 ,  H04N19/196 ,  H04N19/85

Abstract: A method comprises: obtaining or receiving video data; providing a current frame and/or one or more previous frames of the obtained or received video data to an input of a neural network (NN); generating a predicted output at an output of the neural network, comprising at least one of one or more predicted future frames of the video data and predicted properties of one or more future frames of the video data; determining one or more processing decisions based, at least in part, on the predicted output; and processing the current frame of the video data at least partially according to the one or more processing decisions. Predicted future frames may encoded for transmission. Processing the current frame may comprise generating residual information based on a difference between a current frame and an earlier prediction of the current frame. The processing decisions may include determining whether to store the current video frame as a reference frame or determining an encoding method for at least the current video frame. Predicted future frames may comprise plural sets of possible future frames.

公开(公告)号：GB2572996A

公开(公告)日：2019-10-23

申请号：GB201806370

申请日：2018-04-19

Applicant: NOKIA TECHNOLOGIES OY

Inventor： MIKA PESONEN ,  MISKA HANNUKSELA ,  KIMMO ROIMELA ,  JOHANNES PYSTYNEN

IPC: H04N13/111 ,  G06T15/40 ,  H04N13/178 ,  H04N13/275

Abstract: A plurality of patches (61, 62) (e.g. volumetric pixels, points of a point cloud or mesh) representing part of a volumetric scene are provided, along with patch visibility information for each patch indicative of directions from which a forward surface of the patch is visible. One or more viewing positions (60) associated with a client device (V) are provided, and the patch(es) are processed dependent on whether the patch visibility information indicates that the forward surface of the patch(es) is visible from the viewing position(s). If rear-facing (e.g. patch 61), a patch may not be rendered, or may not be transmitted to a client. Providing the patches may comprise estimating surface normals from points of a volumetric scene, and grouping together points having similar surface normals to provide a given patch. Metadata (e.g. SEI messages, manifest or descriptor of media content) indicative of the patch visibility may be transmitted to the client device.