This book is oriented towards the technical needs of jobs in security weak current information industry, with artificial intelligence (AI) + security applications as the main structure, systematically introducing the relevant technologies and industrial case applications of artificial intelligence security systems. The book is divided into two parts. The technical foundation part details the front-end equipment (camera structure and performance parameters, IP HD cameras, night vision cameras, dome cameras and artificial intelligence cameras, etc.) and video transmission technology (analog video transmission, Intranet network video transmission, fiber optic video transmission and microwave spread spectrum wireless transmission) as well as back-end control (NVR function, video storage system, integrated management software platform and AI face recognition system) and display systems (DLP seamless tilted display), basically covering all mainstream application technologies of current social intelligent security information system.