Fix division by zero during CJK training.

tesseract-ocr · Apr 11, 2021 · 05eef74 · 05eef74
1 parent f77b1c6
commit 05eef74
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/src/textord/cjkpitch.cpp b/src/textord/cjkpitch.cpp
@@ -158,11 +158,13 @@ class LocalCorrelation {
     float rc = 0;
     int vote = 0;
     for (int i = start; i < end; i++) {
-      rc += values_[i].vote * x * values_[i].y / values_[i].x;
-      vote += values_[i].vote;
+      if (values_[i].x != 0.0f) {
+        rc += values_[i].vote * x * values_[i].y / values_[i].x;
+        vote += values_[i].vote;
+      }
     }
 
-    return rc / vote;
+    return vote == 0 ? 0.0f : rc / vote;
   }
 
 private: