Abstract: The various embodiments of the invention relates to a method and a technical equipment for video compression. The method comprises processing volumetric image data comprising a plurality of points; defining a hemisphere (601) around a surface (602) normal at each point in the volumetric image; partitioning each of the defined hemispheres spatially into a predefined number of angles (603); determining a representative radiance value for each angle of the predefined number of angles (603) of a defined hemisphere (601); generating a matrix (610) for a point storing the determined representative radiance values; and encoding the generated matrix (610) for the point for video compression.

Abstract: There are disclosed various methods, apparatuses and computer program products for viewing volume signalling of volumetric video. In accordance with an embodiment of a method information of a viewing volume appropriate for viewing a volumetric video is obtained. The viewing volume is examined to determine what geometrical shapes describe the viewing volume. One or more geometrical shapes determined for describing the viewing volume are selected, wherein signalling information for the selected one or more geometrical shapes is constructed.

Abstract: A method and system for three-dimensional video content processing is disclosed comprising an operation of receiving first video data representing three-dimensional video content arranged as a plurality of first tiles associated with respective sub-areas of an image. Another operation comprises providing data indicating for each first tile a depth range of video content within said tile. Another operation comprises determining for each first tile a respective volume based on the depth range. Another operation comprises determining a field of view of a user in relation to the first tile volumes. Another operation comprises rendering of the first video data for one or more first tiles only if their determined volume is at least partially within the field of view.

Abstract: The invention relates to a method and technical equipment for implementing the method. The method comprises generating a three-dimensional segment of a scene of a content; generating more than one two-dimensional views of the three-dimensional segment, each two-dimensional view representing a virtual camera view; generating multi-view streams by encoding each of the two-dimensional views; encoding parameters of a virtual camera to the respective stream of the multi-view stream; receiving a selection of one or more streams of the multi-view stream; and streaming only the selected one or more streams.

Abstract: There are disclosed various methods, apparatuses and computer program products for viewing volume signalling of volumetric video. In accordance with an embodiment of a method information of a viewing volume appropriate for viewing a volumetric video is obtained. The viewing volume is examined to determine what geometrical shapes describe the viewing volume. One or more geometrical shapes determined for describing the viewing volume are selected, wherein signalling information for the selected one or more geometrical shapes is constructed.

Abstract: The various embodiments of the invention relates to a method and a technical equipment for video compression. The method comprises processing volumetric image data comprising a plurality of points; defining a hemisphere (601) around a surface (602) normal at each point in the volumetric image; partitioning each of the defined hemispheres spatially into a predefined number of angles (603); determining a representative radiance value for each angle of the predefined number of angles (603) of a defined hemisphere (601); generating a matrix (610) for a point storing the determined representative radiance values; and encoding the generated matrix (610) for the point for video compression.

Abstract: A method and system for three-dimensional video content processing is disclosed comprising an operation of receiving first video data representing three-dimensional video content arranged as a plurality of first tiles associated with respective sub-areas of an image. Another operation comprises providing data indicating for each first tile a depth range of video content within said tile. Another operation comprises determining for each first tile a respective volume based on the depth range. Another operation comprises determining a field of view of a user in relation to the first tile volumes. Another operation comprises rendering of the first video data for one or more first tiles only if their determined volume is at least partially within the field of view.

Abstract: The invention relates to a method and technical equipment for implementing the method. The method comprises generating a three-dimensional segment of a scene of a content; generating more than one two-dimensional views of the three-dimensional segment, each two-dimensional view representing a virtual camera view; generating multi-view streams by encoding each of the two-dimensional views; encoding parameters of a virtual camera to the respective stream of the multi-view stream; receiving a selection of one or more streams of the multi-view stream; and streaming only the selected one or more streams.

Abstract: A method and technical equipment are provided. The method comprises receiving media content comprising images and depth information; generating a sparse voxel octree from the received images and depth information; projecting the received image colors to each voxel of the generated sparse voxel octree based on visibility; converting the received images into a set of radiance samples for each voxel of the generated sparse voxel octree; and processing the radiance samples by performing one of the following: fitting the radiance samples to a parametric color model to generate estimated radiance samples for a current viewing direction; or analyzing the radiance samples with the content of the generated sparse voxel octree to separate an actual surface color and reflectance properties from a reflected lighting.