Meaning of Residual, Min Angle et al

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aweinstein
Posts: 27
Joined: Fri Oct 26, 2007 9:43 am

Meaning of Residual, Min Angle et al

Post by aweinstein »

Hi:

What is the meaning of the Residual, Min Angle, Min Ray and Max Ray parameters? Couldn't find them in the documentation.

Alejandro.
Birch
Posts: 1139
Joined: Thu Jan 30, 2003 5:00 am
Location: Corvallis, Oregon

Re: Meaning of Residual, Min Angle et al

Post by Birch »

This information is now available in the recently updated documentation.
  • Residual : Rays from the camera to the marker must cross closer than this value (in meters) to form 3D points. Making this value too large can result in an increased numbers of falsely detected 3D markers. Making the value too small can prevent 3D markers from being formed, especially if the cameras are poorly calibrated.
  • Min Angle : Rays from the camera to the marker must cross at an angle (in degrees) larger than this to form 3D points. If cameras observing the same marker are positioned very closely together, the this value may need to be reduced.
  • Min Ray : Rays from the camera to the marker must cross farther than this distance (in meters) from the camera to form 3D points.
  • Max Ray : Rays from the camera to the marker must cross closer than this distance (in meters) from the camera to form 3D points.
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