Object Point: ID :<ID>, tightness:<tightness>%, on photos used <photos>, unused <unused photos>.
• <ID> is the Point ID of the point
• <tightness> is the % projection error for this point (smaller is better)
• <on photos used> is the list of photos that this point is marked on
• <unused photos> is the list of photos that this point is marked on that are not used in processing