The construction of virtual 3D models usually requires heavy and expensive equipment, or takes lengthy amounts of time. A group of researchers at Cambridge University have created a program able to build 3D models of textured objects in real-time, using only a standard computer and webcam. This allows 3D modeling to become accessible to everybody.
The method proposed needs only a simple webcam. The object is moved about in front of the webcam and the software can reconstruct the object "on-line" while collecting live video. The system uses points detected on the object to estimate object structure from the motion of the camera or the object, and then computes the tetrahedralisation of the points. The points are recorded in a mesh of tetrahedra, within which is embedded the surface mesh of the object.
The software can then tidy up the final reconstruction by taking out the invalid tetrahedra to obtain the surface mesh based on a probabilistic carving algorithm and the object texture is applied to the 3D mesh in order to obtain a realistic effect See the vid above, the work has been presented at several conferences (including ISMAR 2009 where it won an award) and is cutting edge in this particular field.
The software can then tidy up the final reconstruction by taking out the invalid tetrahedra to obtain the surface mesh based on a probabilistic carving algorithm and the object texture is applied to the 3D mesh in order to obtain a realistic effect See the vid above, the work has been presented at several conferences (including ISMAR 2009 where it won an award) and is cutting edge in this particular field.
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