METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL USING REDUCED TRANSFORM

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METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL USING REDUCED TRANSFORM

This abstract first appeared for US patent application 18941358 titled 'METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL USING REDUCED TRANSFORM

Original Abstract Submitted

A method and device for processing a video signal using a reduced transform are provided. A method for decoding a video signal includes splitting a current block into a plurality of subblocks based on a first flag for a split direction of the current block, determining a subblock, to which a transform is applied, among the plurality of subblocks based on a second flag for a position of a transform target block, determining a transform target area in the subblock, and applying an inverse transform including a horizontal transform and a vertical transform to transform coefficients of the transform target area. The transform target area is determined based on a transform type applied to the subblock and a size of the subblock.