Method and device for multi-view video decoding and method and device for image processing

A device for decoding a data stream representative of a multi-view video, wherein the device comprises:

• a processor;
• and
• a non-transitory computer-readable medium comprising instructions stored thereon which when executed by the processor configure the decoding device to:
• obtain syntax elements from at least one part of the stream data;
• reconstruct at least one image of a view of the video from the syntax elements obtained;
• obtain at least one item of metadata in a predetermined form from at least one syntax element;
• and
• provide said at least one item of metadata to an image synthesis module.

An image synthesis method implemented by a synthesis device, the method comprising:

• generating at least one image of a virtual view, from at least one image of a view decoded by a decoding device by:
• reading at least one item of metadata in a predetermined form, said at least one item of metadata being obtained by the decoding device from at least one syntax element obtained from a data stream representative of a multi-view video;
• and
• generating said at least one image comprising using said at least one read item of metadata.

An image synthesis device configured to generate at least one image of a virtual view, from at least one image of a view decoded by a decoding device, the image synthesis device comprising:

• a processor;
• and
• a non-transitory computer-readable medium comprising instructions stored thereon which when executed by the processor configure the image synthesis device to:
• read at least one item of metadata in a predetermined form, said at least one item of metadata being obtained by the decoding device from at least one syntax element obtained from a data stream representative of a multi-view video;
• and
• generating said at least one image using said at least one read item of metadata.

A non-transitory computer-readable medium comprising a computer program stored thereon comprising instructions for implementing a decoding method when said program is executed by a processor of a decoding device, wherein the instructions configure the decoding device to:

• decode a data stream representative of a multi-view video by:
• obtaining syntax elements from at least one part of the stream data;
• reconstructing at least one image of a view of the video from the syntax elements obtained;
• obtaining at least one item of metadata in a predetermined form from at least one syntax element;
• and
• providing said at least one item of metadata to an image synthesis module.