1 files changed, 3 insertions, 0 deletions
diff --git a/src/feature.h b/src/feature.h
index d7015f2..a405e8f 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -4,6 +4,7 @@
 #include <iostream>
 #include "types.h"
 
+using Eigen::Vector2d;
 using Eigen::Vector3d;
 using Eigen::Matrix;
 using Eigen::MatrixXd;
@@ -28,6 +29,7 @@ class Feature
 
         /* ====================  ACCESSORS     ======================================= */
         int id();
+        Vector2d initialView();
         Matrix<double,3,3> P0();
         UTM utm(Vector3d &xbw, Quaterniond &q); 
 
@@ -65,6 +67,7 @@ class Feature
         /* ====================  DATA MEMBERS  ======================================= */
         int _id;
         Vector3d X;
+        Vector3d X0;
         Quaterniond q0;
         Vector3d xb0w;