Patent ID: 8310355
Filing Date: 2012-11-13
Classification: B60Q

Abstract:
1. A vehicular collision warning system, which is used to detect barriers in at least one blind spot of a driver of a large-size vehicle, comprising: at least one image capture device installed on said large-size vehicle and used to capture images of said at least one blind spot; a processing unit electrically connected to said at least one image capture device for identifying at least one barrier from one or more captured images, said barrier having an upper speed limit defined as a preset speed, calculating a speed and a displacement of each of said at least one barrier according to positional change of each of said at least one barrier with respect with time, defining at least one attention area in images of said at least one blind spot, and sending out at least one alert-triggering signal when determining that one of said at least one barrier has said calculated displacement and said calculated speed lower than said preset speed in one of said at least one attention area; and at least one alert device electrically connected to said processing unit for receiving said alert-triggering signal and generating an alert signal of sound, light or displayable alert pictures; wherein said processing unit calculates informational quantities of traffic lanes of each of said images of said at least one blind spot, calculates difference of informational quantities of said traffic lanes of every two adjacent said images, compares a curve of said difference with a preset threshold, determines a position where said difference exceeds said preset threshold to be a position of a barrier, and determines positions where said difference is below said preset threshold to be a background.