The design of a surveillance system (or CCTV system) in the real-life circumstances is a hard task. If you havent used some pre-real placement design tools (even paper is used sometimes!), this process would look like «place another camera, then connect it to monitor, then test it by asking employees go back and forth, drive different types of cars and test whether the persons and cars can be identified». Typically, such «real-world testing» is too hard to even try, so normally people use the «design by guessing». But using professional CCTV design software, like VideoCAD, is much better. Much better!
With VideoCAD, the surveillance system design for any environment looks so natural that even a not very experienced user can do it. In a (very) few words, you design your observed area (building or outside) in a 3D editor, set up cameras and receive all information about «how it will look», «where the identification areas would be» and «how should I change it for obtaining a greater value».
VideoCADs 3D editor is handy and contains pre-built models of identifiable objects (persons and cars); more objects can be imported from other 3D formats. Images from all cameras can be modeled in the full 3D, placed on a monitor with great flexibility of placing, and even adjusted by modeling «foggy» or «rainy» conditions and taking into account the image quality of a real camera.