An electronic device is provided, which includes a display; an under display camera (UDC); a processor; and a memory that stores instructions, which when executed, causes the processor to receive a first image from the UDC, generate a second image by lowering a resolution of the first image, obtain a third image representing a difference between the second image and an image corresponding to the second image in which artifacts are not present, generate a fourth image by increasing the resolution of the third image, and generate a fifth image by subtracting the fourth image from the first image.