Method of alerting to stationary objects for vehicle

A method of alerting to stationary objects for vehicle, applicable to a vehicle, said vehicle including a vehicle computer, a optical scanning device, an infrared image extraction device, and an image extraction device, said vehicle computer connected electrically to said optical scanning device, said infrared image extraction device, and said image extraction device, and said vehicle computer executing the following steps of:

• when said vehicle moves, said optical scanning device, said infrared image extraction device, and said image extraction device extracting a first optical scanning image, a first infrared image, and a first ambient image of an ambiance on one side of said vehicle;
• said vehicle computer receiving and combining said first optical scanning image, said first infrared image, and said first ambient image according to a fusion algorithm to give a first image;
• said vehicle computer analyzing and acquiring said first obstacle information of a first obstacle in said first image according to an image optical flow method, where said first obstacle information includes a relative distance to said vehicle and an obstacle volume of said first obstacle;
• and
• when said relative distance is smaller than a distance threshold value and said obstacle volume is greater than a volume threshold value, said vehicle computer labeling a real obstacle on a display unit of said vehicle computer and generating an alert message.