Patent ID: 8494046

Claim:
A method of decoding a video signal with a decoding apparatus, comprising: obtaining, with the decoding apparatus, Illumination Compensation difference information of a neighbor block of a current block, when the video signal does not include an Illumination Compensation flag for the current block; deriving, with the decoding apparatus, an Illumination Compensation difference predictor of the current block using the Illumination Compensation difference information of the neighbor block; deriving, with the decoding apparatus, the Illumination Compensation flag based on the Illumination Compensation difference predictor of the current block, the Illumination Compensation flag indicating whether illumination compensation is performed on the current block; and performing, with the decoding apparatus, the illumination compensation on the current block, based on the Illumination Compensation difference predictor of the current block and the Illumination Compensation flag, wherein when the Illumination Compensation difference predictor of the current block is 0, the Illumination Compensation flag of the current block is derived as 0, and when the Illumination Compensation difference predictor of the current block is not 0, the Illumination Compensation flag of the current block is derived as 1.