Video decoding method and device
Provided are a video decoding method and device. This specification provides a video decoding method comprising the steps of: acquiring a parameter indicating whether a multiple transform set is applicable to a block to be decoded, as well as information about the width of the block to be decoded and the height of the block to be decoded; determining the transform type of the block to be decoded on the basis of at least one of the parameter indicating whether a multiple transform set is applicable, or the information about the width and height of the block to be decoded, and setting a zero-out region of the block to be decoded; and inverse-transforming the block to be decoded on the basis of the zero-out region of the block to be decoded and the result of determining the transform type.
1. A video decoding method performed by a video decoding device, the method comprising:
obtaining a parameter indicating whether a multiple transform set (MTS) can be applied to a decoding block, and information on a size of the decoding block;
determining a transform type of the decoding block based on at least one among the parameter indicating whether the multiple transform set (MTS) can be applied to the decoding block, and the information on the size of the decoding block; and
setting a zero-out area of the decoding block based on at least one among the parameter indicating whether the multiple transform set (MTS) can be applied to the decoding block, and the information on the size of the decoding block,
wherein whether or not syntax information with regard to a maximum size of a transform applied to the decoding block is signaled to the video decoding device depends on whether a block size is greater than a predetermined size, and
wherein when the size of the decoding block is smaller than 16×16, there is no zero-out area of the decoding block.