VEHICLE CIRCUMFERENCE IMAGE PROCESSOR, PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a vehicle circumference image processor which can generate an accurate bird's-eye view image and precisely display a composite bird' s-eye view image even if the elevation angle of a camera varies depending upon the state of a vehicle. SOLUTION: The vehicle circumference image processor irradiates a road surface with red light from a laser light emitting device built in a rear camera at, for example, time T and time T+1. Then variation of the position of a projection image of the red light in a photographic image plane is detected to calculate the quantity of variation in elevation angle from the variation of the position, and this is added to or subtracted from an initial value of the elevation which is previously measured to calculate a real-time value of the elevation angle. The real-time value of the elevation angle is substituted in a specified conversion expression and the photographed image of the camera is processed by bird's-eye view conversion to generate a bird's-eye view image. COPYRIGHT: (C)2003,JPO