An AI encoding apparatus comprises: at least one processor for determining a downscale target on the basis of target resolution of a first image, obtaining a first image by AI-downscaling the original image by using an AI downscale neural network corresponding to the downscale target, generating image data by encoding the first image, selecting AI upscale neural network set identification information on the basis of the target resolution of the first image, characteristic information of the original image, and target definition intensity, generating AI data including the target resolution of the first image, bit depth information of the first image, the AI upscale neural network set identification information, and encoding control information, and generating AI encoding data including the image data and the AI data; and a communication unit for transmitting the AI encoding data to an AI decoding apparatus, wherein the AI data includes information about an AI upscale neural network corresponding to the AI downscale neural network.
AI ENCODING APPARATUS AND OPERATION METHOD THEREOF, AND AI DECODING APPARATUS AND OPERATION METHOD THEREOF