perf_metric: fix DeprecationWarning: Conversion of an array with ndim…

… > 0 to a scalar is deprecated, and will error in future.
Netflix · Mar 25, 2024 · 38a09da · 38a09da
1 parent e98cbff
commit 38a09da
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/python/vmaf/tools/sigproc.py b/python/vmaf/tools/sigproc.py
@@ -125,7 +125,9 @@ def calpvalue(aucs, sigma):
     # pvalue = 2 * (1 - normcdf(z, 0, 1));
     l = np.array([[1, -1]])
     z = np.abs(np.diff(aucs)) / np.sqrt(np.dot(np.dot(l, sigma), l.T))
-    pvalue = 2 * (1 - scipy.stats.norm.cdf(z, loc=0, scale=1))
+    # numpy returns a 2-dimensional array with shape (1, 1), extract the element
+    z_val = z[0, 0]
+    pvalue = 2 * (1 - scipy.stats.norm.cdf(z_val, loc=0, scale=1))
     return pvalue