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1. 发明授权

US11430156B2 Apparatus, a method and a computer program for volumetric video 有权
公开(公告)号：US11430156B2
公开(公告)日：2022-08-30
申请号：US16755681
申请日：2018-08-01
申请人： Nokia Technologies Oy
发明人： Payman Aflaki Beni , Sebastian Schwarz
IPC分类号： G06T9/40 , H04N13/161 , H04N13/388
摘要： There are disclosed various methods, apparatuses and computer program products for volumetric video encoding and decoding. In some embodiments, projection data generated from a projection geometry of an object in a texture picture of volumetric video data is obtained. One or more property of the projection data is examined to determine whether at least one predetermined condition is fulfilled and if the examining reveals that at least one predetermined condition is fulfilled, at least one compression parameter for the projection data is adapted. The projection data is compressed by using the at least one compression parameter.

2. 发明申请

US20210144404A1 APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VOLUMETRIC VIDEO 有权
公开(公告)号：US20210144404A1
公开(公告)日：2021-05-13
申请号：US17045845
申请日：2019-03-13
申请人： Nokia Technologies Oy
发明人： Payman Aflaki Beni , Sebastian Schwarz
IPC分类号： H04N19/597 , H04N19/463 , H04N19/14 , H04N19/115 , H04N19/137
摘要： There are disclosed various methods, apparatuses and computer program products for volumetric video encoding and decoding. In some embodiments of a method for encoding, obtaining one or more patches formed from a three-dimensional image information are obtained. The one or more patches represent projection data of at least a part of an object to a projection plane. Priority for at least one of the one or more patches is determined and the one or more patches are projected to a projection plane. Indication of the priority is encoded into or along a bitstream. In some embodiments of a method for decoding, one or more encoded patches formed from a three-dimensional image information are received. Also at least one indication of priority determined for at least one of the one or more patches is received and the patches are reconstructed in the order defined by the at least one indication of priority.

3. 发明申请

US20200327703A1 AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VOLUMETRIC VIDEO 审中-公开
公开(公告)号：US20200327703A1
公开(公告)日：2020-10-15
申请号：US16956683
申请日：2018-12-14
申请人： Nokia Technologies Oy
发明人： Payman Aflaki Beni , Sebastian Schwarz
IPC分类号： G06T9/20 , H04N19/115 , H04N19/176 , G06T9/40
摘要： There are disclosed various methods, apparatuses and computer program products for volumetric video encoding and decoding. In some embodiments, two or more patches formed from a three-dimensional image information are obtained, each patch representing projection data of at least a part of an object to a projection plane. A rectangle totally covering the patch is determining for each of the two or more patches. A sorting criteria is determined on the basis of a width and a height of the rectangle. The patches are sorted on the basis of the sorting criteria of the rectangles determined for the two or more patches. An initial size of a grid is selected on the basis of one or more of the largest rectangles; and the two or more patches are inserted into the grid. The grid is encoded into a bitstream.

4. 发明授权

US11599968B2 Apparatus, a method and a computer program for volumetric video 有权
公开(公告)号：US11599968B2
公开(公告)日：2023-03-07
申请号：US16754715
申请日：2018-10-09
申请人： Nokia Technologies Oy
发明人： Sebastian Schwarz
IPC分类号： G06T3/00 , G06T7/11 , G06T7/70 , G06T3/40 , H04N19/186 , H04N19/597 , H04N19/80 , H04N13/117 , H04N13/279 , H04N13/161
摘要： Embodiments for volumetric video encoding and decoding relating to one or more three-dimensional objects are disclosed. In encoding, after mapping from 3D space to 2D plane (802) a point in the 2D plane is examined (805) to determine which points of the 3D object are mapped to the same point to obtain a set of candidate points. Candidate points belonging to a same surface can be used to determine a center of mass for the surface (807). A depth value of the centre of mass is mapped to a 2D projection depth plane (808). A colour value for the centre of mass is interpolated from colour values of points of the set of surface points which are nearest neighbours of the center of mass (810), and used as the colour of the surface in the texture plane (812). Corresponding embodiments for decoding are provided.

5. 发明授权

US11463681B2 Encoding and decoding of volumetric video 有权
公开(公告)号：US11463681B2
公开(公告)日：2022-10-04
申请号：US16971143
申请日：2019-02-14
申请人： Nokia Technologies Oy
发明人： Payman Aflaki Beni , Sebastian Schwarz
IPC分类号： H04N13/395 , H04N13/344 , H04N13/161
摘要： There are disclosed various apparatuses, methods, and computer program products for coding volumetric video, where information of a three-dimensional scene is obtained and at least one projection plane for the scene is determined (602). At least a first projection direction is determined for a first part of the projection plane and a second projection direction is determined for a second part of the projection plane so that the first projection direction is different from the second projection direction (604). A first part of the scene is projected on the projection plane from the first projection direction (610); and a second part of the scene is projected on the projection plane from the second projection direction (610). The projection plane is encoded (612). Information of at least one projection plane of a three-dimensional scene, information of at least a first projection direction for a first part of the projection plane and a second projection direction for a second part of the projection plane are decoded. The first projection direction is different from the second projection direction. The decoded information is used to obtain reconstructed geometry data of different parts of the projection plane, and the reconstructed geometry data is used to form a reconstructed 3D image.

6. 发明授权

US11581022B2 Method and apparatus for storage and signaling of compressed point clouds 有权
公开(公告)号：US11581022B2
公开(公告)日：2023-02-14
申请号：US16878009
申请日：2020-05-19
申请人： Nokia Technologies Oy
发明人： Lauri Ilola , Emre Baris Aksu , Miska Matias Hannuksela , Sebastian Schwarz
IPC分类号： G11B27/34 , H04N19/597 , H04N19/70 , G11B27/10
摘要： A method, apparatus and computer program product are provided to signal and store compressed point clouds in video encoding. The method, apparatus and computer program product may be utilized in conjunction with a variety of video formats. Relative to encoding of compressed point clouds, the method, apparatus and computer program product access a point cloud compression coded bitstream and cause storage of the point cloud compression coded bitstream. The point cloud compression coded bitstream comprises a texture information bitstream, a geometry information bitstream, and an auxiliary metadata bitstream. Relative to the decoding of compressed point clouds, the method, apparatus and computer program product receive a point cloud compression coded bitstream and decode the point cloud compression coded bitstream.

7. 发明授权

US11553017B1 Timed media HTTP request aggregation 有权
公开(公告)号：US11553017B1
公开(公告)日：2023-01-10
申请号：US17684838
申请日：2022-03-02
申请人： Nokia Technologies Oy
发明人： Lauri Aleksi Ilola , Lukasz Kondrad , Christoph Bachhuber , Sebastian Schwarz , Miska Matias Hannuksela
IPC分类号： H04L12/24 , H04L29/08 , H04L29/06 , H04L65/61 , H04L67/02 , H04L65/752 , G06F15/173 , G06F15/16
摘要： An apparatus may be configured to: transmit, to a client, an indication of one or more request-response overload capabilities; receive, from the client, at least one request for a plurality of media segments based, at least partially, on the indication of the one or more request-response overload capabilities; and transmit, to the client, at least one response comprising the plurality of media segments. The apparatus may be, for example, a media server, an HTTP overload handler, an edge server, a DANE, etc.

8. 发明申请

US20220292763A1 Dynamic Re-Lighting of Volumetric Video 有权
公开(公告)号：US20220292763A1
公开(公告)日：2022-09-15
申请号：US17688970
申请日：2022-03-08
申请人： Nokia Technologies Oy
发明人： Lauri Aleksi Ilola , Lukasz Kondrad , Sebastian Schwarz , Christoph Bachhuber
IPC分类号： G06T15/50 , G06T15/08 , G06T15/20 , G06T15/04 , H04N19/597 , H04N19/186
摘要： An apparatus includes at least one processor; and at least one memory including 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: obtain a scene comprising three-dimensional information in the form of point clouds, three-dimensional meshes, two-dimensional projections of three-dimensional information, light sources, animations or any other form considered as a representation or description of three-dimensional content; extract lighting information from the obtained scene; process the extracted lighting information into at least one explicit lighting parameter and/or at least one pre-processed lighting map; and encode the scene with the at least one pre-processed lighting map and/or the at least one lighting parameter in a file format or as a visual volumetric video-based coding bitstream.

9. 发明授权

US11412267B2 Storage of multiple atlases from one V-PCC elementary stream in ISOBMFF 有权
公开(公告)号：US11412267B2
公开(公告)日：2022-08-09
申请号：US17140580
申请日：2021-01-04
申请人： Nokia Technologies Oy
发明人： Sebastian Schwarz , Lukasz Kondrad , Emre Aksu , Lauri Ilola , Vinod Kumar Malamal Vadakital , Miska Matias Hannuksela
IPC分类号： H04N19/70 , H04N19/597
摘要： An apparatus includes at least one processor; and at least one non-transitory memory including 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: provide signal information to identify an atlas identifier on a sample of a volumetric media track, or on the volumetric media track in a multi-track container; wherein the signal information allows a file parser to link volumetric media tracks with different atlas identifiers that originate from a volumetric media elementary stream; and wherein the file parser is able to reconstruct the volumetric media elementary stream based on the signal information and data encapsulated in the multi-track container.

10. 发明申请

US20220116659A1 A METHOD, AN APPARATUS AND A COMPUTER PROGRAM PRODUCT FOR VOLUMETRIC VIDEO 有权
公开(公告)号：US20220116659A1
公开(公告)日：2022-04-14
申请号：US17275482
申请日：2019-09-10
申请人： Nokia Technologies Oy
发明人： Mika Pesonen , Sebastian Schwarz
IPC分类号： H04N19/597 , H04N19/159 , H04N19/176
摘要： The embodiments relate to a method comprising receiving (1311) a volumetric video comprising a three-dimensional object; segmenting (1312) the three-dimensional object into a plurality of regions; for one or more regions of a three-dimensional object (1313): inserting into a bitstream or signaling along a bitstream a signal indicating one or more of the following: intra frame offset relating to three-dimensional geometry value (Z) between two regions within a frame; inter frame offset relating to three-dimensional geometry value (Z) between two regions in different frames; depth smoothness constraint relating to three-dimensional geometry value (Z) and transmitting (1314) the bitstream to a decoder. The embodiments relate to a method for receiving and decoding the bitstream, as well as to technical equipment for implementing any of the methods.

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