| CPC H04N 19/513 (2014.11) [H04N 19/573 (2014.11)] | 16 Claims |
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1. A method of decoding a video signal, the video signal including transform block including at least one transform coefficient group, comprising:
obtaining transform region information indicating at least two transform regions, the transform regions included in a transform block;
partitioning the transform block into the transform regions based on the transform region information, the transform region including a first transform region and a second transform region, the first transform region including a first transform coefficient groups and the second transform region including a second transform coefficient groups;
obtaining a scan method of the transform regions, respectively; and
scanning a part of the transform region based on the scan method,
wherein the part of the transform region comprises the first transform region,
wherein the first and the second transform coefficient groups include at least one transform coefficients, respectively,
wherein the scan method comprising a scan order for coding the transform coefficients of the first and the second transform coefficient groups,
wherein when the first transform coefficient groups are included in a low frequency region, the transform coefficients of the first transform coefficient groups are scanned prior to the transform coefficients of the second transform coefficient groups, and
wherein the scan method of the transform regions in the transform block indicates at least two scan methods.
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