--- /dev/null
+Index: image_cb_detector/src/rgbd_cb_detector_action.cpp
+===================================================================
+--- image_cb_detector.orig/src/rgbd_cb_detector_action.cpp
++++ image_cb_detector/src/rgbd_cb_detector_action.cpp
+@@ -143,7 +143,7 @@ public:
+ for(size_t i = 0; i< features.image_points.size(); i++){
+ geometry_msgs::Point pixel = features.image_points[i];
+ float depth = *(depth_ptr+width*(unsigned int)pixel.y+(unsigned int)pixel.x);
+- if ( isnan(depth) )
++ if ( std::isnan(depth) )
+ {
+ continue;
+ }