US Patent 10304165 Vehicle stain and trash detection systems and methods

Example vehicle stain and trash detection systems and methods are described. In one implementation, a method receives a clean image and clean Lidar data associated with a clean vehicle interior. The method also receives a second image and second Lidar data associated with the vehicle interior after a passenger has occupied the vehicle. Differences are identified between the clean image and the second image. Additionally, differences are identified between the clean Lidar data and the second Lidar data. The method determines whether the vehicle interior includes at least one of a stain, dirt, or trash based on the identified differences.