General toolbox for 4D Particle Tracking Velocimetry. Allows you to track in space and time hundreds or a few thousand of lagrangian tracers in a flow.
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Support for multiple_matches_per_ray_min_distance in Matching Python #5
It remains a difference with the C++ code: in the Python code there is no parameter to set the minimum distance between two matches with the same ray. We noted that without such a parameter, wrong matches were found. Could you add this parameter in the Python code? It should correspond to the parameter multiplematchesperraymindistance of the C++ code. Thanks a lot!
Of course, in Python we would use a variable multiple_matches_per_ray_min_distance (or simply min_distance_matches_1ray?) for readability.
Good news: the function make_approved_matches is not computationally intensive (~1% of the total time, still in pure Python) so adding this should not change too much the overall performance.
jsalort
commented
4 years ago
I quote @ddumont-2607
See https://github.com/turbulencelyon/4d-ptv/search?q=multiplematchesperraymindistance
In the Python code, I think the associated condition has to be implemented in the function
make_approved_matches(https://github.com/turbulencelyon/4d-ptv/blob/master/Matching/STMPython/stm_util.py#L529).Of course, in Python we would use a variable
multiple_matches_per_ray_min_distance(or simplymin_distance_matches_1ray?) for readability.Good news: the function
make_approved_matchesis not computationally intensive (~1% of the total time, still in pure Python) so adding this should not change too much the overall performance.