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A summary of the SIGGRAPH paper, "Floating Scale Surface Reconstruction."
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Floating Scale Surface Reconstruction SIGGRAPH 2014
2014/06/11ked
Authors
Simon Fuhrmann, Michael Goesele
Outline
Problems of 3D surface reconstruction Floating scale implicit function Sampling Results
Outline
Problems of 3D surface reconstruction Floating scale implicit function Sampling Results
Problems – noise & reflection
Problems – several scans
Point cloud to 3D surface
Reconstruction
Example
384 photos 196 million samples Most: low resolution Lion: close-up
Properties of this paper
Input: Large, redundant and potentially noisy point sets
(with normals)
Parameters: Scan scale
Output: Implicit function with continuous scale
Properties of this paper
Input: Large, redundant and potentially noisy point sets
(with normals)
Parameters: Scan scale (patch size in a multi-view stereo alg.)
Output: Implicit function with continuous scale
Outline
Problems of 3D surface reconstruction Floating scale implicit function Sampling Results
Implicit surface
Implicit surface
Implicit function
: basis function : weighting function : confidence (c = 1) : ith sample
Basis function
Basis function – 2D illustration
Basis function – 2D illustration
Basis function – 2D illustration
Weighting function
Weighting function – 2D illustration
Analysis in 2D – scale factor
Scale factor = 0.5, 1.0, 2.0
Analysis in 2D – samples
Samples = 50, 500, 5000
Outline
Problems of 3D surface reconstruction Floating scale implicit function Sampling Results
Scale sampling
Scale selection
Scale sampling
Scale selection Determine a cut-off scale value
Local sampling
Local construction
Outline
Problems of 3D surface reconstruction Floating scale implicit function Sampling Results
Basis function / weighting function
Signed distance ramps (basis function)
B-spline (weighting function)
Incomplete data
Input
Performance
Fountain
Thx.