1. A method for detecting a forged face using an infrared image, comprising: acquiring an infrared image and a photorealistic image captured by one camera or two cameras extracting a face region from the photorealistic image; determining, based on analysis of quality characteristics of the infrared image, whether a current face is a forged face or not; and performing face recognition on the extracted face region if it is determined that the current face is a non-forged face.