초록

Obstacle warning system for low-flying airborne craft in which case the edge contours of the obstacles are visualized for the pilot in a display.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of displaying obstacle image information for use with an imaging system having a video camera, a range image sensor, a processor unit and a display for displaying image information, said method comprising the steps of:processing a range image acquired by said r

[ What is claimed is:] [1.]1. A method of displaying obstacle image information for use with an imaging system having a video camera, a range image sensor, a processor unit and a display for displaying image information, said method comprising the steps of:processing a range image acquired by said range image sensor to detect discontinuities between adjacent image data in said range image, to generate one dimensional edge contour information for features present in a field of view;displaying an image of said field of view acquired by said video camera, with said one dimensional edge contour information superimposed in spacial registration therewith; whereinsaid processing step comprises high pass filtering in a digital processor;the range image sensor has an imaging speed lower than 25 to 30 Hz;the range image sensor generates its image, scanning vertical or horizontal lines in the course of the time;only those obstacle contours are blended into the optical image which occur in a currently generated range image line and whose position is known because of a shorter dead time between the detection in the range image and blending into the basic image; andduring further building-up of the range image, previously blended in object contours become gradually weaker.