This paper proposes a new method for integrating range images with different resolutions to generate an entire 3D model. The modeling method is based on the fact range images need an overlapping area between the images for the registration process. Thus, we integrate data from two range images into one surface model, and represent the overlapping area with triangular patches. Few conventional methods have paid attention to integrating images with different resolutions. Moreover, most conventional methods find corresponding points by using the distance between points. However, it sometimes causes wrong corresponding points in convex and concave surfaces. We propose a new integration method that uses geometric and topological information. Experimental results showed that this method is efficient for integrating multiple range images.