1. An imaging preventing apparatus comprising: imaging means for obtaining an imaged image signal by performing imaging processing; image analyzing means for performing image analyzing processing on the imaged image signal obtained by the imaging means; imaging preventing operation performing means for performing a preventing operation against imaging by a different camera system; and control means for determining a possibility of imaging by the different camera system based at least in part on analysis result information by the image analyzing means and, if it is determined that there is a possibility of being imaged, causing the imaging preventing operation performing means to perform the preventing operation.