Quantifying human reconstruction accuracy for Voxel Carving in a sporting environment
Monaghan, David and Kelly, Philip and O'Connor, Noel E. (2011) Quantifying human reconstruction accuracy for Voxel Carving in a sporting environment. In: ACM MM, 28 Nov - 1 Dec. 2011, Scottsdale, AZ..
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Whilst voxel carving approaches exist that allow non-invasive 3D human reconstruction, their performance is heavily dependent on the number of cameras used and the placement of these cameras around the subject. We present a technique to quantify the fall-off in accuracy of spatially carved volumetric representations of humans based on real world constraints. We describe an example of such a quantitative evaluation using a synthetic dataset of typical sports motion in a tennis court scenario, created using computer graphics techniques and motion capture data. Experiments are performed using a baseline voxel carving technique that includes player tracking, background subtraction and player voxel carving. This type of quantitative evaluation could be used by amateur sporting clubs without a sophisticated capture infrastructure to understand how best to instrument a camera network in order to obtain a good trade-off between reconstruction accuracy and installation cost.
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