An image-based modeling technique is described that can reconstruct 3D models of objects directly from two-dimensional digital images. This research introduces the basic method and principles of image-based modeling. This technique was used to build a 3D model of a statue on the campus of Chongqing University. This image-based modeling technique could be used in the case of natural disasters or accidents for construction of a 3D model and, therefore, be used for the restoration of cultural relics. The technique has practical value and various potential applications.