Method and apparatus for processing a video signal
An apparatus for processing a video signal and method thereof are disclosed, by which duplication of inter-view pictures is eliminated to decode the video signal, by which a global motion vector of a current picture is generated based on relevance between inter-view pictures to decode the video signal, and by which motion information for a current picture is obtained based on relevance between inter-view pictures to perform motion compensation. The present invention includes extracting attribute information for a current block or attribute information for a current picture from the video signal, extracting motion skip information for the current block, and generating motion information for the current block using motion information for a reference block according to the attribute information and the motion skip information.
1. A method for processing a multi-view video signal, comprising:
extracting anchor picture flag information of a current picture in a current view from the multi-view video signal, the anchor picture flag information indicating whether the current picture is an anchor picture or a non-anchor picture;
extracting motion skip information of a current block in the current picture, when the current picture is the non-anchor picture according to the anchor picture flag information; and,
generating motion information for the current block using motion information for a corresponding block in a neighboring view when the current block is in a motion skip mode according to the motion skip information;
determining a reference block in the current view based on the motion information of the current block; and
decoding the current block in the current view by using the reference block,
wherein the generating including:
determining the corresponding block in the neighboring view based on a global motion vector of the current picture, the global motion vector of the current picture being generated using a global motion vector of the anchor picture; and
obtaining the motion information for the determined reference block.
2. The method of claim 1 , wherein the global motion vector of the current picture is generated based on a picture order count of the current picture and a picture order count of the anchor picture.
3. The method of claim 1 , wherein the motion information comprises at least one of block type information, motion vector, and reference picture index.
4. The method of claim 1 , wherein the multi-view video signal is received as a broadcast signal.
5. The method of claim 1 , wherein the multi-view video signal is received on a digital medium.
6. A non-transitory computer-readable-medium comprising a program recorded therein to execute the method of claim 1 .
7. An apparatus for processing a multi-view video signal, comprising:
a decoding apparatus configured to,
extract anchor picture flag information of a current picture in a current view from the multi-view video signal, the anchor picture flag information indicating whether the current picture is an anchor picture or a non-anchor picture,
extract motion skip information of a current block in the current picture, when the current picture is the non-anchor picture according to the anchor picture flag information,
determine a corresponding block in a neighboring view based on a global motion vector of the current picture, when the current block is in a motion skip mode according to the motion skip information, the global motion vector of the current picture being generated using a global motion vector of the anchor picture,
obtain motion information from the determined corresponding block,
generate motion information for the current block using motion information for the corresponding block in the neighboring view, and
determine a reference block in the current view based on the motion information of the current block, and decode the current block in the current view by using the reference block.