| CPC H04N 19/593 (2014.11) [H04N 19/11 (2014.11); H04N 19/136 (2014.11); H04N 19/176 (2014.11)] | 3 Claims | 

| 
               1. A method for processing a video signal comprising: 
            receiving intra prediction mode information for a current block indicating one of a plurality of intra prediction modes including a basic angle mode corresponding to an angle within a preset angle range; 
                determining an extended angle mode based on a sum of an index of the basic angle mode corresponding to the intra prediction mode information and a predetermined offset; and 
                obtaining a prediction sample of the current block based on the extended angle mode, 
                wherein the extended angle mode indicates a wide angle direction outside the preset angle range. 
               |