I am thinking of an application which is necessary to know if there is and where someone is located, inside a rail passenger car or bus, for example, the problem is many external factors such as external sunlight or temperature disrupt thermal sensors, creating many false positives. In case of cameras some objects, like seats or other objects difficult to "see" some people in a determined place. Another point is it is a real-time application, it means, the amount of generated date from cameras would be almost impossible for processing.
I am thinking to use ToF sensors or mm-Wave sensors, however, I do not know if the seats or some objects could difficult or even make impossible for sensing human.
Someone has some idea or advice which sensor could be used in such an application ?
