To provide a computer program, an image processing method, and an image processing apparatus that avoid deterioration due to free deformation with respect to a digital image.The computer program causes a computer to execute a process of receiving editing order including scaling, rotation, shifting, or distortion with respect to a digital image to be processed, identifying a target resolution of the digital image to be processed, generating a temporary reference image with a resolution predetermined times the target resolution based on the digital image, performing rotation, shifting, or distortion in the received editing with respect to the temporary reference image, and outputting the digital image with the target resolution by performing sampling at a rate corresponding to the target resolution with respect to the edited temporary reference image.