A multi-spectral system for providing precollision alerts

A multi-spectral vehicular system for providing pre-collision alerts, comprising:

• a) a first pair of stereoscopic infrared (IR) sensors and a second pair of visible light (VL) sensors, the sensors of each of said first and second pairs providing corresponding acquired image streams from a mutual field of view and being synchronized to provide a stereoscopic view;
• b) a stereo data fusion module for:
• b.1) mutually processing data related to said synchronized image streams for each of said two pairs, to detect objects within said mutual field of view;
• b.2) calculate estimated distances to the detected objects based on said mutually processed data;
• c) an Auto-Calibration module which is configured to calculate a set of matching points on an overlapping area captured by two of said sensors that view a three dimensional scene from different positions and to calculate homographies that transform a projective image space of a first of said two sensors to the projective image space of a second of said two sensors using said calculated matching points;
• and
• d) a cellular based communication module for allowing communication between said two pairs of sensors and a mobile phone or an infotainment system provided with a vehicle on which said system is mounted, on a processor of said mobile phone or infotainment system is running a dedicated application, being a background application, said communication module configured to:
• d.1) monitor a vicinity of said vehicle to detect other vehicles in conjunction with said stereo data fusion module and said Auto-Calibration module;
• d.2) calculate a speed and instantaneous angle of each of said other vehicles with respect to said vehicle;
• and
• d.3) provide alerts to a driver of said vehicle whenever one or more of said other vehicles are in a path of collision with said vehicle, based on said calculated speed and instantaneous angle of each of said other vehicles and on the speed of said vehicle.