/usr/lib/python2.7/dist-packages/dipy/segment/metric.py is in python-dipy 0.10.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | from dipy.segment.featurespeed import (Feature,
IdentityFeature,
ResampleFeature,
CenterOfMassFeature,
MidpointFeature,
ArcLengthFeature,
VectorOfEndpointsFeature)
from dipy.segment.metricspeed import (Metric,
SumPointwiseEuclideanMetric,
AveragePointwiseEuclideanMetric,
MinimumAverageDirectFlipMetric,
CosineMetric)
from dipy.segment.metricspeed import (dist,
distance_matrix)
# Creates aliases
EuclideanMetric = SumPointwiseEuclideanMetric
def mdf(s1, s2):
""" Computes the MDF (Minimum average Direct-Flip) distance
[Garyfallidis12]_ between two streamlines.
Streamlines must have the same number of points.
Parameters
----------
s1 : 2D array
A streamline (sequence of N-dimensional points).
s2 : 2D array
A streamline (sequence of N-dimensional points).
Returns
-------
double
Distance between two streamlines.
References
----------
.. [Garyfallidis12] Garyfallidis E. et al., QuickBundles a method for
tractography simplification, Frontiers in Neuroscience,
vol 6, no 175, 2012.
"""
return dist(MinimumAverageDirectFlipMetric(), s1, s2)
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