Methods, computer devices, and non-transitory computer-readable record media for learning of watermarking model using complex attack

Abstract

Disclosed are a method, a computer device, and a non-transitory computer-readable record medium for learning of a watermarking model. A watermarking model learning method may include dividing, by the at least one processor, epochs for learning of a watermarking model into at least two stages, setting, by the at least one processor, at least one target attack type to each stage among the at least two stages, the setting includes setting a first threshold number of the at least one target attack type set to an earlier stage to be greater than a second threshold number of the at least one target attack type set to a later stage, and the at least two stages including the earlier stage and the later stage, and performing, by the at least one processor, learning of the watermarking model based on the at least two stages and the setting.