1. A mobile terminal configured to process images, the mobile terminal comprising: a camera configured to capture the images; an image sensor configured to acquire an image signal of an object in an image captured via the camera; an infrared sensor configured to detect an infrared signal reflected from the object; a controller configured to: determine whether flicker is generated; detect information related to a light source contributing to the generated flicker based on the detected infrared signal if flicker is generated; and an image processor configured to perform white balance of the acquired image signal, the white balance performed based on the detected information if flicker is generated, wherein an order of detecting the infrared signal and the flicker is determined based on whether the infrared sensor is activated; wherein either the image sensor or the infrared sensor is selected to detect the flicker based on whether the infrared sensor is activated, wherein the infrared signal is detected and then the flicker is detected using the activated infrared sensor when the infrared sensor is activated, and wherein the flicker is detected using the image sensor and then the infrared sensor is activated and used to detect the infrared signal when the infrared sensor is not activated.