Wednesday, May 18, 2016

Multi View Stereo - Magazine rack at Target

Here's an example of a 3d dense reconstruction obtained with Structure from Motion 10 (SfM10) and Multi View Stereo 10 (MVS10).


Input to SfM10: Set of four frames extracted from a video taken with iphone4.


Output of MVS10: a dense 3d reconstruction.

The parameters used for MVS10 were:
- Number of trials used in rectification = 10000
- Minimum average separation angle (camera pair selection) = 0.5
- Radius used to smooth the cost = 32
- Alpha = 0.9
- Truncation value for color cost = 30.0
- Truncation value for gradient cost = 10.0
- Epsilon = 4
- Disparity tolerance used to detect occlusions = 0
- Downsampling factor = 4
- Sampling step = 1
- Minimum separation angle = 0.5
- Minimum number of image points per 3D point = 3
- Maximum reprojection error = 2.0
- Radius for the animated gif frames = 1

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