Abstract: A method for converting OFF (object file format) from three-dimensional polygon data into a quad edge data structure which includes a step to determine if an input triangle of object file format is a whole new triangle, a step to find two edges and perform splice operation if the input triangle is a whole new triangle in the determination step, a step to find a quad edge from vertex link of quad edge data structure if the input triangle is not a whole new triangle in the determination step, and a step to find a candidate edge for a splice operation by comparing the link generated in the preprocessing stage and the vertex link of quad edge data structure and performing the splice operation on the candidate edge and the new quad edge.

Abstract: An apparatus for interactive model generation using multi-images includes an image capturing means for capturing an arbitrary object as a 2D image using a camera, a modeler graphic user interface means for providing a 3D primitive model granting interactive relation of data between 2D and 3D, a 3D model generation means for, matching a predetermined 3D primitive model and the 2D image obtained from the image capturing means, a texture rendering means for correcting errors generated in capturing the image and an interactive animation means for adding and editing animations of various types at the 3D model for the 2D images.