text: do not calculate mean for empty angles list

7 years ago · d7ca0bde0b
parent db3d7e85b8
commit d7ca0bde0b
1 changed files with 2 additions and 1 deletions
--- a/modules/text/src/erfilter.cpp
+++ b/modules/text/src/erfilter.cpp
@ -2687,7 +2687,8 @@ double MaxMeaningfulClustering::probability(vector<int> &cluster)
    //for (int kk=0; kk<angles.size(); kk++)
    //  cout << angles[kk] << " ";
    //cout << endl;
-
+    if (angles.empty() || edge_distances.empty())
+        return 0;
    meanStdDev( angles, mean, std );
    sample.push_back((float)std[0]);
    sample.push_back((float)mean[0]);