Outdoor sports have been praised as a healthy lifestyle. It includes mountain climbing, camping, adventure, rock climbing, caving, and so on. In the dark night or dense jungle, thermal imager could help travelers quickly observe the surrounding environment, in order to detect wild animals and ensure the safety of the camp. It could also help travelers see road conditions clearly and avoid getting lost, no matter how bad the weather is. When there are people missing or trapped, thermal imager can also be used for search and rescue.