Merge pull request #93 from AlexeyKruglov/fix-hist

Fix histogram matching with scipy 0.17.0

Author: alexjc

enhance.py

@@ -540,8 +540,8 @@ def match_histograms(self, A, B, rng=(0.0, 255.0), bins=64):
  (Ha, Xa), (Hb, Xb) = [np.histogram(i, bins=bins, range=rng, density=True) for i in [A, B]]
  X = np.linspace(rng[0], rng[1], bins, endpoint=True)
  Hpa, Hpb = [np.cumsum(i) * (rng[1] - rng[0]) ** 2 / float(bins) for i in [Ha, Hb]]
- inv_Ha = scipy.interpolate.interp1d(X, Hpa, bounds_error=False)
- map_Hb = scipy.interpolate.interp1d(Hpb, X, bounds_error=False)
+ inv_Ha = scipy.interpolate.interp1d(X, Hpa, bounds_error=False, fill_value='extrapolate')
+ map_Hb = scipy.interpolate.interp1d(Hpb, X, bounds_error=False, fill_value='extrapolate')
  return map_Hb(inv_Ha(A).clip(0.0, 255.0))
 
  def process(self, original):