Methods and apparatus for multi-view video coding
There are provided methods and apparatus for multi-view video coding. A video encoder includes an encoder for encoding a block in a picture by choosing between temporal prediction and cross-view prediction to enable a prediction for the block. The picture is one of a set of pictures corresponding to multi-view video content and having different view points with respect to a same or similar scene. The picture represents one of the different view points. A high-level syntax is used to indicate the use of cross-view prediction for the block.
1. A video encoding method, comprising:
encoding a first block in a picture using one of temporal prediction and cross-view prediction, the picture being one picture of a set of pictures corresponding to multi-view video content, the picture representing one of the different view points; and
signaling a disparity vector for the first block and a motion vector for a second block in the picture,
wherein a high-level syntax is used to indicate the use of cross-view prediction for the first block,
wherein said encoding mixes the disparity vector for the first block and the motion vector for the second block in the picture, in a single vector field, and
wherein a block-level syntax is used to indicate whether motion compensation or disparity compensation is applied to the first block.
2. The method of claim 1 , wherein one of a motion vector and a disparity vector, but not both of the motion vector and the disparity vector, is signaled for a block in the picture.
3. The method of claim 1 , wherein the high-level syntax comprises a slice-level syntax.
4. The method of claim 1 , wherein a motion vector for a block is used in the vector field when motion compensation is used for the block and a disparity vector is used when disparity compensation is used for the block.
5. An apparatus, comprising at least a memory and one or more processors, the one or more processor being configured to:
encode a first block in a picture using one of temporal prediction and cross-view prediction, the picture being one picture of a set of pictures corresponding to multi-view video content, the picture representing one of the different view points,
signal a disparity vector for the first block and a motion vector for a second block in the picture,
wherein a high-level syntax is used to indicate the use of cross-view prediction for the first block,
wherein said encoding mixes the disparity vector for the first block and the motion vector for the second block in the picture, in a single vector field, and
wherein a block-level syntax is used to indicate whether motion compensation or disparity compensation is applied to the first block.
6. The apparatus of claim 5 , wherein one of a motion vector and a disparity vector, but not both of the motion vector and the disparity vector, is signaled for a block in the picture.
7. The apparatus of claim 5 , wherein the high-level syntax comprises a slice-level syntax.
8. The apparatus of claim 5 , wherein a motion vector for a block is used in the vector field when motion compensation is used for the block and a disparity vector is used when disparity compensation is used for the block.
9. An apparatus, comprising at least a memory and one or more processors, the one or more processor being configured to:
decode a first block in a picture by choosing between temporal prediction and cross-view prediction to enable a prediction for the first block, the picture being one of a set of pictures corresponding to multi-view video content, the picture representing one of the different viewpoints, wherein a high-level syntax is read to determine the use of cross-view prediction for the first block; and
decode a disparity vector for the first block and a motion vector for a second block in the picture,
wherein the disparity vector for the first block and the motion vector for the second block are mixed in a single vector field, and
wherein a block-level syntax is used to indicate whether motion compensation or disparity compensation is applied to the first block.
10. The apparatus of claim 9 , wherein one of a motion vector and a disparity vector, but not both of the motion vector and the disparity vector, is decoded for a block in the picture.
11. The apparatus of claim 9 , wherein the high-level syntax comprises a slice-level syntax.
12. The apparatus of claim 9 , wherein a motion vector for a block is used in the vector field when motion compensation is used for the block and a disparity vector is used when disparity compensation is used for the block.
13. An apparatus, comprising at least a memory and one or more processors, the one or more processors being configured to:
transmit a first block in a picture, the first block being encoded using one of temporal prediction and cross-view prediction, the picture being one picture of a set of pictures corresponding to multi-view video content, the picture representing one of the different view points;
transmit a disparity vector for the first block and a motion vector for a second block in the picture, wherein the disparity vector for the first block and a motion vector for a second block are mixed in a single vector field;
transmit a high-level syntax that indicates the use of cross-view prediction for the first block; and
transmit a block-level syntax that indicates whether motion compensation or disparity compensation is applied to the first block.
14. The apparatus of claim 13 , wherein one of a motion vector and a disparity vector, but not both of the motion vector and the disparity vector, is signaled for a block in the picture.
15. The apparatus of claim 13 , wherein the high-level syntax comprises a slice-level syntax.
16. The apparatus of claim 13 , wherein a motion vector for a block is used in the vector field when motion compensation is used for the block and a disparity vector is used when disparity compensation is used for the block.
17. A non-transitory processor readable medium having stored thereon an encoded bitstream, the encoded bitstream comprising:
a first block in a picture, the first block being encoded using one of temporal prediction and cross-view prediction, the picture being one picture of a set of pictures corresponding to multi-view video content, the picture representing one of the different view points;
a high-level syntax that indicates the use of cross-view prediction for the first block,
wherein a disparity vector for the first block and a motion vector for a second block in the picture are mixed in a single vector field; and
a block-level syntax that indicates whether motion compensation or disparity compensation is applied to the first block.
18. The medium of claim 17 , wherein one of a motion vector and a disparity vector, but not both of the motion vector and the disparity vector, is signaled for a block in the picture.
19. The medium of claim 17 , wherein the high-level syntax comprises a slice-level syntax.
20. The medium of claim 17 , wherein a motion vector for a block is used in the vector field when motion compensation is used for the block and a disparity vector is used when disparity compensation is used for the block.