Visual hulls for volume estimation : a fast marching cubes based approach

Master Thesis

2005

Permanent link to this Item
http://hdl.handle.net/11427/5160
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thesis_ebe_2005_milne_p_s.pdf (4.64 MB)
Authors
Milne, Phillip Simon
Supervisors
Nicolls, Fred
De Jager, Gerhard
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University of Cape Town

Department
Department of Electrical Engineering
Faculty
Faculty of Engineering and the Built Environment
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Abstract
This thesis describes a technique that can be used to compute and represent the visual hull of a 3D object. Silhouette-based methods rely on multiple views of an object to construct cone-like volumes that intersect, forming the visual huH. Multiple views can be generated using one of many different camera systems. The visual hull is accurately calculated using high resolution voxel based models, which can be computationally expensive. The marching cubes algorithm improves upon the voxel based model by replacing surface voxels with polygonal patches, removing the sharp voxel comers characteristic of voxel based models. The positional accuracy of each surface patch is improved through the implementation of a binary search applied to all patch vertices.
Description

Includes bibliographical references.

Keywords
Electrical Engineering

Reference:

Milne, P. 2005. Visual hulls for volume estimation : a fast marching cubes based approach. University of Cape Town.

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