1. An image processing apparatus comprising one or more modules, one or more devices, or a combination thereof, wherein the image processing apparatus is configured to receive a main image signal and a subsidiary image signal, and remove or reduce noise of the main image signal using information about the subsidiary image signal, and to restore details of the main image signal from which the noise has been removed or reduced using high-frequency components of the subsidiary image signal, wherein the main image signal is a color signal or an RGB signal, and the subsidiary image signal is a signal composed of all wavelengths of visible light, a signal composed of all wavelengths of visible light and wavelengths of infrared light, or a signal composed of all wavelengths of visible light and wavelengths of ultra-violet light.