X-Git-Url: http://47.100.26.94:8080/?a=blobdiff_plain;f=src%2FUtils.cpp;h=df6802baa2f2b34cb078dee404598d77fb4ba005;hb=HEAD;hp=c174e282436f9b010a0fa55b5991f369c6cc5078;hpb=d06c701dfc59f196bac017708b626f0daa92973f;p=trackerpp.git

diff --git a/src/Utils.cpp b/src/Utils.cpp
index c174e28..df6802b 100644
--- a/src/Utils.cpp
+++ b/src/Utils.cpp
@@ -1,10 +1,16 @@
 #include "Utils.h"
+#include <iostream>
+#include <stdexcept>
 
 using namespace suanzi;
 using namespace cv;
+using namespace std;
 
 double distance_cosine(const Eigen::VectorXd& u, const Eigen::VectorXd& v)
 {
+    if (u.dot(u) * v.dot(v) == 0){
+        throw overflow_error("zero vector for cosine distance");
+    }
     return (1 - u.dot(v) / std::sqrt(u.dot(u) * v.dot(v)));
 }