1. An image-processing method, comprising: subjecting original image data indicative of an original image to a selective noise reduction by reducing noise from pixel data that meets a prescribed condition among all the pixel data in the original image data; and performing a first calibration to calibrate contrast of a backlight region of the selectively-noise-reduced original image data to generate an output image by determining a first pixel component and a second pixel component for each pixel data in the selectively-noise-reduced image data, by increasing contrast of the second pixel component, and by recreating pixel data based on the first pixel component and the calibrated second pixel component.