Revert "Remove noise from labelmap"

This reverts commit 17a082f6c0.

assets/models/labelmap.txt

@@ -1,3 +1,4 @@
+???
 person
 bicycle
 car
@@ -9,6 +10,7 @@ truck
 boat
 traffic light
 fire hydrant
+???
 stop sign
 parking meter
 bench
@@ -22,8 +24,11 @@ elephant
 bear
 zebra
 giraffe
+???
 backpack
 umbrella
+???
+???
 handbag
 tie
 suitcase
@@ -38,6 +43,7 @@ skateboard
 surfboard
 tennis racket
 bottle
+???
 wine glass
 cup
 fork
@@ -58,8 +64,12 @@ chair
 couch
 potted plant
 bed
+???
 dining table
+???
+???
 toilet
+???
 tv
 laptop
 mouse
@@ -71,6 +81,7 @@ oven
 toaster
 sink
 refrigerator
+???
 book
 clock
 vase