Abstract: Provided is a vision system for detecting a defect, including a conveyer belt configured to move at least one bottle through the vision system; a light emitting diode (LED) backlight configured to silhouette any dark contamination on a surface or inside the at least one bottle; a robot with a bottle gripper tooling, the robot configured to pick up the at least one bottle and rotate the at least one bottle; at least one camera configured to take pictures of the at least one bottle while the at least one bottle is being rotated; and a flipper arm configured to stop or allow the at least one bottle to move to a position where the robot picks up the at least one bottle.