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"Random Match Set"
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Choose a degree of perturbation between 0 and 40
(default is 10), and click on the button.
This applies a non affine transformation to the
red model set,
generating a random blue
match set. One remark: be patient the first time you click
it, for some reason it takes a few seconds to generate (but just the
first time).
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| "Show matchings"
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This checkbox is only available when
valid model set and match set are present in the canvas.
This checkbox shows/hides the matchings
between the model set and the match set. We don't show the similarity k-d
tree here, but the algorithm used is exactly the one described on this
web site.
Correct matchings
are shown in orange and incorrect
ones in dark gray. It's interesting to generate a model set
that is bunched up together, then generating a succession of match sets
and looking at the matchings in each case. We get a good idea of how
often the algorithm makes mistakes.
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| "Show hyperplanes"
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This checkbox is only available when
valid model set and match set are present in the canvas.
This checkbox shows/hides the
hyperplanes that divide the space given the specified model set.
One possible mistake is to assume that
model and match points are matched together if they lie in the same
cell.
This in fact is NOT how the algorithm
works (see previous sections), but it is interesting nonetheless to
observe how robust the partition is to small movements of the points
(i.e. it stays the same).
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