Image processing device and operating method thereof

An encoder for compressing image data for pixels constituting one frame image, the encoder comprising:

• a compression circuit configured to generate first compressed data by performing compression on first image data, the first image data including a most significant bit (MSB) of the image data;
• a buffer configured to store second image data that is free of a compression operation, the second image data including a least significant bit (LSB) of the image data;
• and
• a merging circuit configured to generate a payload by merging the first compressed data with the second image data.

A decoder for reconstructing image data for pixels constituting one frame image from compressed data, the decoder comprising:

• a split circuit configured to split, from a payload of the compressed data, first compressed data corresponding to first image data including a most significant bit (MSB) of the image data and second image data including a least significant bit (LSB) of the image data;
• a decompression circuit configured to restore the first image data by performing decompression on the first compressed data based on a header of the compressed data;
• a buffer configured to store the second image data that is free of a decompression operation;
• and
• a merging circuit configured to generate reconstructed image data by merging the restored first image data with the second image data.