Method and apparatus for encoding and decoding video signal

An apparatus for processing a video signal, comprising:

• an intra prediction unit configured to, when a neighbor block adjacent to a current block is intra-coded, generate a prediction block for the neighbor block by using a reconstructed reference pixel of the neighbor block, determine a refined intra prediction mode of the neighbor block based on the prediction block, generate a prediction mode candidate list for the current block based on the refined intra prediction mode, select an intra prediction mode for the current block from the prediction mode candidate list, and perform a prediction for the current block based on the intra prediction mode;
• and
• a reconstruction unit configured to reconstruct the video signal based on the prediction result,
• wherein the refined intra prediction mode is a mode which minimizes an error between the prediction block and the reconstructed neighbor block.