公开(公告)号：US12015805B2

公开(公告)日：2024-06-18

申请号：US17795631

申请日：2021-01-21

Applicant: Nokia Technologies Oy

Inventor： Ari Hourunranta ,  Miska Matias Hannuksela ,  Emre Baris Aksu ,  Saba Ahsan

IPC: H04N21/218 ,  H04N21/472 ,  H04N21/81

CPC classification number: H04N21/21805 ,  H04N21/472 ,  H04N21/816

Abstract: The embodiments relate to a method including determining a foreground area covering a viewport of 360-degree video and one or more other areas of 360-degree video, not containing the foreground area in its entirety; concluding a first set of tile streams among available tile streams of the 360-degree video to cover the foreground area; concluding a second set of tile streams among the available tile streams of the 360-degree video, to cover the one or more other areas; and requesting transmission of a first set of portions of the first set of tile streams and a second set of portions of the second set of tile streams, wherein the portions in the first set of portions have a shorter duration that portions in the second set of portions.

公开(公告)号：US11805303B2

公开(公告)日：2023-10-31

申请号：US17296900

申请日：2019-12-30

Applicant: Nokia Technologies Oy

Inventor： Igor Curcio ,  Miska Hannuksela ,  Sujeet Shyamsundar Mate ,  Emre Aksu ,  Ari Hourunranta

IPC: H04N21/845 ,  H04N21/231 ,  H04N21/442 ,  H04N21/462 ,  H04N21/4728

CPC classification number: H04N21/8456 ,  H04N21/23109 ,  H04N21/44209 ,  H04N21/462 ,  H04N21/4728

Abstract: A method, apparatus and computer program product to signal and store various segment properties in omnidirectional media, including sizes, priority ranks, and the like. The method, apparatus and computer program product access one or more media segments (30). The one or more media segments includes media data configured for streaming playback. The method, apparatus and computer program product access size information (32) or priority rank information of one or more tiles for each of the one or more media segments. The method, apparatus and computer program product encode the size information (34) or priority rank information for each of the one or more media segments in a media file within one or more metadata tracks associated with the one or more media segments or one or more sub-segments associated with the one or more media segments.

公开(公告)号：US20200250891A1

公开(公告)日：2020-08-06

申请号：US16745770

申请日：2020-01-17

Applicant: Nokia Technologies Oy

Inventor： Igor Curcio ,  Sujeet Mate ,  Kashyap Kammachi Sreedhar ,  Emre Aksu ,  Miska Hannuksela ,  Ari Hourunranta

IPC: G06T19/00 ,  H04N13/111 ,  H04N13/161 ,  G06F3/01

Abstract: The embodiments relate to a method, and a technical equipment for implementing the method. The method comprises generating a bitstream defining a presentation, the presentation comprising an omnidirectional visual media content; and indicating in the bitstream a definition for an external media to be overlaid on the omnidirectional visual media content during rendering; wherein the definition comprises at least an overlay placement information for the external media on the omnidirectional visual media content. The embodiments also relate to a method and technical equipment for decoding the bitstream.

公开(公告)号：US11653054B2

公开(公告)日：2023-05-16

申请号：US17433075

申请日：2019-12-12

Applicant: Nokia Technologies Oy

Inventor： Miska Matias Hannuksela ,  Emre Baris Aksu ,  Ari Hourunranta ,  Kashyap Kammachi-Sreedhar ,  Igor Danilo Diego Curcio

IPC: H04N21/435 ,  H04L65/70 ,  H04L65/75 ,  H04N21/845

CPC classification number: H04N21/435 ,  H04L65/70 ,  H04L65/762 ,  H04N21/845

Abstract: A method, apparatus and computer program product encode, into a media description, a first information item indicative of a first locator for segment metadata for a set of representations. The method, apparatus and computer program product encode, into the media description, one or more representation-specific information items indicative of representation-specific locator for segment media data for one or more representations of the set of representations. The method, apparatus and computer program product cause storage of the media description with the set of representations.

公开(公告)号：US11909983B2

公开(公告)日：2024-02-20

申请号：US17433034

申请日：2020-02-19

Applicant: Nokia Technologies Oy

Inventor： Miska Hannuksela ,  Igor Curcio ,  Sujeet Shyamsundar Mate ,  Emre Aksu ,  Ari Hourunranta

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/146

CPC classification number: H04N19/146 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172

Abstract: A method comprising: encoding video media content into at least a first representation and a second representation, wherein the first representation comprises a switchable inter-coded picture, wherein the switchable picture has a first characteristic that no pictures preceding the switchable picture in decoding order are used as reference pictures for any non-switchable pictures following the switchable picture in decoding order; and the second representation comprises one or more decoder reset pictures aligned with the switchable pictures of the first representation, wherein the frame rate of the second representation is smaller than or equal to the frame rate of the first representation and the resolutions of the first and the second representation are equal.

公开(公告)号：US11190802B2

公开(公告)日：2021-11-30

申请号：US17178641

申请日：2021-02-18

Applicant: Nokia Technologies Oy

Inventor： Ari Hourunranta ,  Saba Ahsan

IPC: H04N19/597 ,  H04N13/111 ,  H04N19/146 ,  H04N13/161

Abstract: There are disclosed various methods, apparatuses and computer program products for adaptive bitrate control for tiled omnidirectional video. In some embodiments information of a size of a viewport to view omnidirectional video data is received and an orientation of a viewport within the omnidirectional video data is determined. A first set of tiles belonging to the viewport and a second set of tiles outside the viewport are determined. A bitrate is estimated for a full picture using a first quality for the first set, and a second quality for the second set. The determination is repeated for a plurality of viewports. A representative viewport orientation is selected using the estimation results. A plurality of bitrates are estimated for a full picture for the third set of tiles and for the fourth set of tiles; and estimated bitrates and the representative viewport orientation are provided to an adaptive bitrate algorithm.

公开(公告)号：US11094130B2

公开(公告)日：2021-08-17

申请号：US16745770

申请日：2020-01-17

Applicant: Nokia Technologies Oy

Inventor： Igor Curcio ,  Sujeet Mate ,  Kashyap Kammachi Sreedhar ,  Emre Aksu ,  Miska Hannuksela ,  Ari Hourunranta

IPC: G06T19/00 ,  G06F3/01 ,  H04N13/161 ,  H04N13/111

Abstract: The embodiments relate to a method, and a technical equipment for implementing the method. The method comprises generating a bitstream defining a presentation, the presentation comprising an omnidirectional visual media content; and indicating in the bitstream a definition for an external media to be overlaid on the omnidirectional visual media content during rendering; wherein the definition comprises at least an overlay placement information for the external media on the omnidirectional visual media content. The embodiments also relate to a method and technical equipment for decoding the bitstream.