Method and apparatus for block-based depth map coding and 3D video coding method using the same

摘要

Provided are a block-based depth map coding method and apparatus and a 3D video coding method using the same. The depth map coding method decodes a received bitstream in units of blocks of a predetermined size using a bitplane decoding method to reconstruct a depth map. For example, the depth map coding method may decode the bitstream in units of blocks using the bitplane decoding method or an existing Discrete Cosine Transform (DCT)-based decoding method adaptively according to decoded coding mode information. The bitplane decoding method may include adaptively performing XOR operation in units of bitplane blocks. For example, a determination on whether or not to perform XOR operation may be done in units of bitplane blocks according to the decoded value of XOR operation information contained in the bitstream.

主权项

1. A method for decoding a depth map, the method comprising:
performing bitplane decoding on a bitstream in units of blocks of a predetermined size to reconstruct the depth map; decoding coding mode information for each depth map block, the coding mode information being contained in the bitstream; and decoding XOR operation information for each bitplane block contained in the bitstream, wherein the bitplane decoding is performed in response to the decoded coding mode information indicating bitplane decoding, wherein the bitplane decoding comprises adaptively performing XOR operation in units of bitplane blocks; and the XOR operation is performed on a bitplane block only in response to the decoded XOR operation information indicating that an XOR operation has to be performed.