Method and apparatus for encoding/decoding video signal

Abstract

According to the present invention, a method of decoding a video signal may include decoding division information that indicates whether a current decoding block is divided into two partial blocks, decoding information that indicates a division direction for the current decoding block when the division information indicates that the current decoding block is divided into the two partial blocks, and dividing the current decoding block into the two partial blocks according to the division direction.

1 . An image decoding method comprising:
 obtaining a first intra prediction mode of a current block;   obtaining difference information for deriving a second prediction mode of the current block; and   deriving the second prediction mode based on the first intra prediction mode and the differential information.   
     
     
         2 . The image decoding method of  claim 1 ,
 wherein the first intra prediction mode specifies one of candidate intra prediction modes,   wherein the second prediction mode is derived based on a candidate intra prediction mode specified by the first intra prediction mode and the difference information.   
     
     
         3 . An image encoding method comprising:
 determining a first intra prediction mode and a second prediction mode of a current block;   determining difference information based on the first intra prediction mode and the second prediction mode of the current block; and   encoding the first intra prediction mode and the difference information.   
     
     
         4 . A method of transmitting a bitstream generated by an image encoding method, the image encoding method comprising:
 determining a first intra prediction mode and a second prediction mode of a current block;   determining difference information based on the first intra prediction mode and the second prediction mode of the current block; and   encoding the first intra prediction mode and the difference information.