In-vehicle system for comparing a state of a vehicle cabin before and after a ride

A method for monitoring a scene in an interior of a cabin of a vehicle, the method comprising:

• receiving, with a processing system, a respective sensor signal from each of a plurality of sensors, the processing system being operably connected to the plurality of sensors and having at least one processor, each sensor in the plurality of sensors being configured to output the respective sensor signal to the processing system, at least one sensor in the plurality of sensors being configured measure an aspect of the interior of the cabin;
• determining, with the processing system, during a first time period, (i) a reference value for a first attribute of the interior of the cabin based on a first sensor signal from a first sensor in the plurality of sensors, (ii) a reference value for a second attribute of the interior of the cabin based on a second sensor signal from a second sensor in the plurality of sensors, and (iii) a reference value for a third attribute of the interior of the cabin based on the reference value for the first attribute and the reference value for the second attribute;
• determining, with the processing system, during a second time period that is subsequent to the first time period, (i) a current value for the first attribute of the interior of the cabin based on the first sensor signal from the first sensor in the plurality of sensors, (ii) a current value for the second attribute of the interior of the cabin based on the second sensor signal from the second sensor in the plurality of sensors, and (iii) a current value for the third attribute of the interior of the cabin based on the current value for the first attribute and the current value for the second attribute;
• and
• determining, with the processing system, a change in the interior of the cabin by comparing the current value for the third attribute with the reference value for the third attribute.