Electronic apparatus and control method thereof

An electronic apparatus comprising:

• a storage configured to store a compression rate network model configured to identify a compression rate applied to an image block from among a plurality of compression rates, and a plurality of compression noise removing network models configured to remove compression noise for each of the plurality of compression rates;
• and
• a processor configured to:
• receive a decoded moving picture including a sequence of a plurality of decoded frames,
• divide a frame of the plurality of decoded frames into a plurality of image blocks,
• obtain a predicted compression rate of each of the plurality of image blocks included in the frame of the decoded moving picture based on the compression rate network model,
• determine most frequent compression rate among the plurality of obtained predicted compression rates for the plurality of image blocks of the frame as a predicted compression rate of the frame, and
• remove compression noise of the frame based on a compression noise removing network model corresponding to the compression rate of the frame from among the plurality of compression noise removing network models,
• wherein the compression rate network model is obtained by learning image characteristics of a plurality of restored image blocks corresponding to the plurality of compression rates through a first artificial intelligence algorithm,
• wherein the plurality of restored image blocks are generated by encoding a plurality of original image blocks, and decoding the encoded plurality of original image blocks, and
• wherein the plurality of compression noise removing network models are obtained by learning a relation between the plurality of original image blocks and the plurality of restored image blocks through a second artificial intelligence algorithm.