System detection and visualization of indoor parking lot occupancy, operating on the principle of detecting the occupancy of individual parking spots. The system is designed for operation in indoor environments (garages in buildings). IoT smart cameras are used to detect vehicles, which can also identify each vehicle – by recognizing its license plate. Data from the detectors is sent in real time to a central system, where it is processed and statistically validated. The processed occupancy data can be used to control occupancy indicators for individual spaces, display parking information on VMS signs, or can be visualized in a user application.