3D Modeling from Captured Images Using Bi-directional Ray Traversal Method

• Authors: Hisayoshi Zaima;Tsuyoshi Yamamoto
• Venue: CAPTECH '98 Proceedings of the International Workshop on Modelling and Motion Capture Techniques for Virtual Environments
• Year: 1998

In general, modeling techniques are classified into the creative app. roach and the reproductive app. roach. We discuss the latter approach to reconstruct existing objects. Lately, computers and networks are significantly improved, so that app. lication algorithms are also expected to be improved as well. For instance, capturing and modeling existing objects without special equipment is really desirable. We propose a method to reconstruct whole app. earances of existing objects with voxel space from 2D images that are captured using ordinary video cameras. Our app. roach does not involve extracting and tracking feature points of target objects unlike some conventional methods. Our method identifies the voxel properties so as to keep the app. earance from frame to frame consistent. We call the way of expression screened voxel expressions. The voxel properties are represented by state variables that represent shape and color, and they are calculated by backward and forward ray shooting. During the calculation each voxel has several candidate colors and the correct one is only determined at the end. In this paper, we will discuss the feature value assessment using some experiments. We will also explain the basic methodology of our app. roach.