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AssigneeDolby Laboratories Licensing Corporation
InventorsTaoran LU, Peng YIN, Guan-Ming SU, Dae Yeol LEE, Sean Thomas MCCARTHY, Tsung-Wei HUANG, Sejin OH
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Methods and apparatus for transmission of volumetric images in the MPI format. According to an example embodiment, texture and alpha layers of multiplane images are packed, as tiles, into a sequence of video frames. The sequence of video frames is then compressed to generate a video bitstream, which is transmitted together with a metadata bitstream specifying at least the parameters of the packing arrangement for the tiles in the sequence of video frames. Example packing arrangements include various selectable spatial and temporal arrangements for texture layers, alpha layers, and camera views. In some examples, the metadata bitstream is implemented using a SEI message and includes parameters selected from the group consisting of a size of the reference view, the number of layers in the multiplane image, the number of simultaneous views, one or more characteristics of the packing arrangement, layer merging information, dynamic range adjustment information, and reference view information.
A method for encoding a bitstream, the method comprising:
The method of claim 1, wherein the metadata further indicate that there is only one patch per MPI layer, and a layer patch has width and height equal to a width and a height of a camera projection plane.
The method of claim 4, further indicating disabling scaling of geometry and occupancy by setting:
A method for transmitting a coded bitstream comprising texture and alpha layers of a video sequence of multiplane images (MPI) and metadata, wherein the texture and alpha layers of the multiplane images are packed as tiles in a sequence of two-dimensional video frames, and the metadata comprise profile parameters to decode the coded bitstream according to an MPEG Immersive video (MIV) packed profile, wherein the metadata indicate:
Dependencies are inferred from the claim text.