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MappingSolver (3D)
I am from inverse Mapping
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Shoutbox
~16h ago
joreg:
Coming up: vvvv meetup on May 3rd: https://visualprogramming.net/blog/2024/24.-vvvv-worldwide-meetup/
~8d ago
joreg:
Postponed: Next vvvv beginner course starting April 29: https://thenodeinstitute.org/courses/vvvv-beginner-class-summer-2024/
~16d ago
joreg:
vvvv gamma 6.0 is out: https://visualprogramming.net/blog/2024/vvvv-gamma-6.0-release/
~1mth ago
~1mth ago
joreg:
Next vvvv beginner course starting April 15: https://thenodeinstitute.org/courses/vvvv-beginner-class-summer-2024/
~1mth ago
joreg:
The Winter Season of vvvv workshops is now over but all recordings are still available for purchase: https://thenodeinstitute.org/ws23-vvvv-intermediates/
~2mth ago
schlonzo:
Love the new drag and drop functionality for links in latest previews!
~2mth ago
joreg:
Workshop on 29 02: Create Sequencers and Precise Clock Based Tools. Signup here: https://thenodeinstitute.org/courses/ws23-vvvv-08-create-sequencers-and-precise-clock-based-tools-in-vvvv-gamma/
great!
nice! does it work different than cv´s camera calib? looks quite familiar but a simpler. i guess the equations are kind of the same?
very cool! based on image pack?
No, it only depends on the MS Solver Foundation that ships with .Net anyway.
https://github.com/velcrome/vvvv-Dome/blob/master/modules/Mapping/Solver%20(3d)/plugins/ValueSolver/ValueSolverNode.cs
The plugin tries to guess Position, Rotation and beamer intrinsics by assuming values for them.
these 9 values are used to project the input (3d points from the scene for example) and comparing the result to the mapped 2d points you provided (screen space). there will be some error, but the NelderMeadSolver takes care of reducing that error continuously (by changing the guessed values slightly) until the discrepancy is small enough and the guessed values can be taken for real.
On a side note: There are some issues related to convergence to a local minimum, thats why there is all that patch stuff to the right to detect if we are maybe dealing with a local minimum.