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Creating 3D Models With a Simple Webcam

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object 3D reconstruction

Object 3D reconstruction with texture mapping.

Credit: University of Cambridge

University of Cambridge researchers have developed a simple and affordable method for constructing virtual three-dimensional (3D) models, which should make 3D modeling more accessible. The new program requires only a basic Web camera in order for users to build 3D models of textured objects in real time.

The system collects live video when an object is moved in front of the Webcam, and then reconstructs the object online. The software detects points on the object, uses them to estimate object structure from the motion of the camera or the object, and computes the Delaunay tetrahedralization of the points. The system records the points in a mesh of tetrahedra, which is where the object's surface mesh is embedded. The invalid tetrahedra are removed to obtain the surface mesh based on a probabilistic carving algorithm and the object texture is applied to the 3D mesh in order to clean up the final reconstruction and produce a realistic model.

The Cambridge team presented the system at the 20th British Machine Vision Conference in London.

From University of Cambridge
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Abstracts Copyright © 2009 Information Inc., Bethesda, Maryland, USA


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