Thursday, October 13, 2016

Multi View Stereo - Hobos

Input is a set of 6 images (1920x1080 pixels) which I took with my iphone 4s at the New York State Museum in Albany.

Output is a dense 3d reconstruction (photogrammetry) in the form of a point cloud using SfM10 (Structure from Motion) and MVS10 (Multi-View Stereo) available freely at 3D Software.

Input to MVS10:

nvm file = duh.nvm
Min match number (camera pair selection) = 100
Min average separation angle (camera pair selection) = 0.1
radius (disparity map) = 16
alpha (disparity map) = 0.9
color truncation (disparity map) = 30
gradient truncation (disparity map) = 10
epsilon = 255^2*10^-4 (disparity map)
disparity tolerance (disparity map)= 0
downsampling factor (disparity map)= 2
sampling step (dense reconstruction)= 1
Min separation angle (low-confidence 3D points) = 0.1
Min image point number (low-confidence 3D points) = 3
Max reprojection error (low-confidence image points) = 2.0
Radius (animated gif frames) = 1
Angle amplitude (animated gif frames) = 5.0
Max min error (vertical disparity) = 0.5

Here's the point cloud in sketchfab viewer: