| 摘要 |
A method and an apparatus for decoding/encoding a video signal are provided to minimize information to be transmitted for illumination compensation by estimating an offset value of a current block by using information of a neighbor block and sending a difference between the current block and the neighbor block. To decode a video signal, flag information representing execution of illumination compensation for a current block is obtained from a video signal(S410). If illumination compensation is executed according to the flag information, an offset value of the current block representing a difference between a mean pixel value of the current block and a mean pixel value of a reference block is restorable(S420). To encode a video signal, an offset value of the current block representing a difference between a mean pixel value of the current block and a mean pixel value of a reference block is obtained. An optimum reference block matched with the current block is searched by using the offset value. A motion vector is obtained from the searched reference block for encoding.
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