Video data decoding method and video data decoding apparatus
Disclosed is a method and apparatus for decoding video data. The method for decoding video data includes receiving coded video data including multi-view video data and depth data corresponding to the video data, acquiring motion data for inter-view prediction of a coding unit of the coded video data from the depth data, and performing inter-view prediction based on the motion data, and restoring video data according to the multi-view video data including the coding unit and the depth data based on the motion prediction.
1. A method for decoding video data comprising:
receiving coded video data comprising video data and depth data corresponding to the video data;
acquiring motion data for inter-view prediction of a coding unit of the video data from the depth data;
performing inter-view prediction based on the motion data; and
reconstructing video data according to the video data comprising the coding unit and the depth data based on the inter-view prediction, the coding unit comprising at least one prediction block,
wherein the acquiring motion data for inter-view prediction of the coding unit comprises deriving the motion data for inter-view prediction of the coding unit based on a location and a size of the coding unit,
wherein the motion data for inter-view prediction of a prediction block of the video data is calculated using information derived from a depth map picture to which the coding unit refers, the information including the disparity of the maximum value of the depth values of a corresponding unit of the depth map picture to which the coding unit refers, and
wherein, in response to the coding unit comprising prediction blocks for which the inter-view predication is applied, the maximum value is shared in the prediction blocks for the motion data calculation of inter-view prediction.
2. The method according to claim 1 , wherein the depth values of the corresponding unit of the depth map picture includes the depth values of the left uppermost position, right uppermost position, left lowermost position, and right lowermost position of a corresponding unit of the depth map picture.
3. The method according to claim 1 , wherein the motion data is calculated further using a view identifier of the depth map picture or a view identifier of a picture comprising the coding unit.
4. The method according to claim 1 , wherein the video data comprises at least one texture.
5. The method according to claim 1 , wherein the coding unit comprises a macroblock, or one of a coding unit, a prediction unit, and a transform unit that are defined in High Efficiency Video Coding (HEVC).
6. The method according to claim 1 , wherein the acquiring motion data for inter-view prediction of the coding unit comprises deriving the motion data for inter-view prediction of the coding unit based on information derived from a depth map block corresponding to a current prediction block.
7. An apparatus for decoding video data, the apparatus comprising:
a processor; and
a storage storing instructions executed by the processor,
wherein the processor is configured to, in response to the instructions
receive and parse coded video data comprising video data and depth data corresponding to the video data,
acquire motion data for inter-view prediction of a coding unit of the video data from the depth data by deriving the motion data for inter-view prediction of the coding unit based on a location and a size of the coding unit and perform inter-view prediction based on the motion data, and
reconstruct video data according to the video data comprising the coding unit and the depth data based on the motion prediction, the coding unit comprising at least one prediction block,
wherein the motion data for inter-view prediction of a prediction block of the video data is calculated using information derived from a depth map picture to which the coding unit refers, the information including the disparity of the maximum value of the depth values of a corresponding unit of the depth map picture to which the coding unit refers, and
wherein in response to the coding unit comprising prediction blocks for which the inter-view prediction is applied, the maximum value is shared in the prediction blocks for the motion data calculation of inter-view prediction.
8. The apparatus according to claim 7 , wherein the depth values of the corresponding unit of the depth map picture includes the depth values of the left uppermost position, right uppermost position, left lowermost position, and right lowermost position of a corresponding unit of the depth map picture.
9. The apparatus according to claim 7 , wherein the motion data is calculated further using a view identifier of the depth map picture or a view identifier of a picture comprising the coding unit.
10. The apparatus according to claim 7 , wherein the coding unit comprises a macroblock, or one of a coding unit, a prediction unit, and a transform unit that are defined in High Efficiency Video Coding (HEVC).
11. The apparatus according to claim 7 , wherein the video data comprises at least one texture.
12. The apparatus according to claim 7 , wherein the processor is further configured to derive the motion data for inter-view prediction of the coding unit based on information derived from a depth map block corresponding to a current prediction block.
13. A method for encoding data comprising video data and depth data corresponding to the video data, comprising:
encoding the video data, by referring the depth data and calculating motion data for inter-view prediction of a coding unit of the video data from the depth data; and
transmitting encoded video data,
wherein the calculating motion data for inter-view prediction of the coding unit comprises deriving the motion data for inter-view prediction of the coding unit based on a location and a size of the coding unit,
wherein the motion data for inter-view prediction of a coding unit of the video data is calculated using information derived from a depth map picture to which the coding unit refers, the coding unit comprising at least one prediction block, the information includes the disparity of the maximum value of the depth values of a corresponding unit of the depth map picture to which the coding unit refers, and
wherein, in response to the coding unit comprising prediction blocks for which the inter-view predication is applied, the maximum value is shared in the prediction blocks for the motion data calculation of inter-view prediction.
14. The method according to claim 13 , wherein the depth values of the corresponding unit of the depth map picture includes the depth values of the left uppermost position, right uppermost position, left lowermost position, and right lowermost position of a corresponding unit of the depth map picture.
15. The method according to claim 13 , wherein the motion data is calculated further using a view identifier of the depth map picture or a view identifier of a picture comprising the coding unit.
16. The method according to claim 13 , wherein the video data comprises at least one texture.
17. The method according to claim 13 , wherein the coding unit comprises a macroblock, or one of a coding unit, a prediction unit, and a transform unit that are defined in High Efficiency Video Coding (HEVC).
18. The method according to claim 13 , wherein the motion data for inter-view prediction of the coding unit is calculated based on information derived from a depth map block corresponding to a current prediction block.