Image encoding/decoding method and device, and recording medium having bitstream stored therein

Abstract

An image decoding method may include determining a target boundary for a filtering by dividing a reconstructed picture; deriving a boundary strength for the target boundary based on whether at least one block among blocks adjacent to the target boundary was coded by a partition combined prediction, where the partition combined prediction represents a mode in which a prediction is performed by combining a first prediction block of a first partition and a second prediction block of a second partition based on a block being geometrically partitioned into the first partition and the second partition; and performing a filtering for the target boundary based on the boundary strength, where the first prediction block and the second prediction block are prediction blocks in which different predictions were performed.