Security with the 360 degrees television-intrusion detection surveillance system

A unique, versatile, non-mechanical, non-rotating 360 degrees imaging system has been developed and field-tested successively with conventional black and white, color television, 35-mm, motion picture cameras to prove that intruders, vehicles, radiation can be detected and recognized from any direction using one camera. The system consists of a low-cost, unique first surface reflective conical mirror with special computer programmed aspheric surfaces in operation with conventional narrow field of view (FOV) cameras and objective lenses. The cameras are converted to the 360 degrees horizontal FOV and flexibility in conical mirror design provides variable elevation FOV to fit the security application. The wide, efficient spectral reflectance of the conical mirror means that UV, LLLTV, far infrared thermal TV cameras can be converted, as well, to 360 degrees imaging. The TV real-time (30 frames/sec) 360 degrees circular image can be processed electronically and presented on the TV monitor as a typical linear undistorted 360 degrees rectangular scene or stacked rectangular scenes (2-180 degrees, 3-120 degrees, 4-90 degrees, etc.) and also processed to provide analog to digital real-time motion detection and audible alarm to alert security personnel. For the 360 degrees imaging system or any television system, the motion detection electronics has been designed to function effectively with image digital memory requirements reduced by magnitudes, thereby, increasing computer speed, but reducing computer costs. The 360 degrees TV real-time intruder detection system can operate in internal and external locations. For external locations, optical filtering and electronic processing has been designed to minimize motion detection false alarms caused by the changing illumination, cloud motion, sun glitter, etc. of the outdoor land or marine environment. The versatile 360 degrees TV imaging system objectives are to replace several narrow FOV cameras for an instantaneous 360 degrees sweep, accordingly to reduce number of motion detection accessories, to operate with off-the-shelf camera equipment, and, thus to provide a highly cost effective technique for intruder detection in governmental, industrial, commercial, residential, security applications.