Automatic Correspondence and Global Registration of Range Images for 3d Modeling

A free-form object must be acquired from multiple viewpoints to make its complete 3D model. These views are then registered by establishing correspondence between them. Pair wise registration of the views may result in a 3D model with large seams due to the accumulation of registration errors. Global registration is therefore performed to register the views simultaneously, distributing the registration errors evenly over the 3D model. In this paper we present an automatic 3D modeling approach using our automatic correspondence algorithm combined with global registration. Our algorithm takes an ordered set of views of an object, automatically finds pair wise correspondences between the views and finally, registers the views with global registration. To show the accuracy of our technique, we perform a comparative analysis of the pairwise registration, resulting from our automatic correspondence technique alone, and the resultant global registration.