Patent ID: 6911642
Filing Date: 2005-06-28
Classification: G01S,G06K,G06T,G08G

Abstract:
1. A method of object presence detection, by using a detection device of the type mounted to a motor vehicle, said vehicle having at least one blind spot, where said detection device is for detecting an object such as an approaching vehicle situated in said blind spot, comprising: (a) a receiver ( (b) an electronic circuit ( (c) a logic circuit ( (d) indicator members activated by said output signals, said detection device being adapted to distinguish a vehicle from other objects, wherein said distinguishing is effected by recognizing arrises, clearly marked on at least a first portion of said image surface of interest in vertical and/or horizontal directions on a road surface and the follow-up of the movement of said arrises through various successive images to calculate a relative speed of a detected object providing said arrises.