diff --git a/include/structs_definitions.h b/include/structs_definitions.h
index da29e83b04a408d4b5d8ce971d68c17bf736b00c..763c5bb1dfb9f3872303cefce5fb32a3f5a192a0 100644
--- a/include/structs_definitions.h
+++ b/include/structs_definitions.h
@@ -65,7 +65,7 @@ const int CLASS_GROUND = 46;
 const int CLASS_OBSTACLE = 100;
 const int CLASS_OVERHANGING_OBSTACLE = 15;
 const int CLASS_LOW_OBSTACLE = 24;
-const int CLASS_NEGATIVE_OBSTACLE = 26;
+const int CLASS_GROUND_ACCUMULATED = 26;
 
 const int CLASS_EDGE_DISCARDED_TOO_MUCH_MAHALANOBIS_DISTANCE = 25;
 const int CLASS_EDGE_ACCEPTED = 27;
@@ -79,10 +79,18 @@ const uint8_t R_CLASS_GROUND = 0;
 const uint8_t G_CLASS_GROUND = 0;
 const uint8_t B_CLASS_GROUND = 255;
 
+const uint8_t R_CLASS_GROUND_ACCUMULATED = 52;
+const uint8_t G_CLASS_GROUND_ACCUMULATED = 101;
+const uint8_t B_CLASS_GROUND_ACCUMULATED = 164;
+
 const uint8_t R_CLASS_OBSTACLE = 0;
 const uint8_t G_CLASS_OBSTACLE = 255;
 const uint8_t B_CLASS_OBSTACLE = 0;
 
+const uint8_t R_CLASS_LOW_OBSTACLE = 255;
+const uint8_t G_CLASS_LOW_OBSTACLE = 0;
+const uint8_t B_CLASS_LOW_OBSTACLE = 0;
+
 const uint8_t R_CLASS_OVERHANGING_OBSTACLE = 0;
 const uint8_t G_CLASS_OVERHANGING_OBSTACLE = 255;
 const uint8_t B_CLASS_OVERHANGING_OBSTACLE = 255;