Detecting objects by comparing digital images

摘要

A method for the detection of an object 6 and/or a group of objects in digital image sequences recorded stereoscopically by a calibrated stereo camera means uses at least first and second cameras (3a,3b). Relevant image regions, which are grouped to form one or more original clusters, are determined in a first image of the first camera. Clusters corresponding to the original clusters are correlated in a first image of the second camera based on a similarity criterion. The disparities of the respective original clusters from the corresponding clusters are determined in the first image of the second camera and the clusters corresponding to the original clusters are correlated in a second image and at least one displacement vector of the respective original cluster is determined Then the individual original clusters are each assigned to an object to be detected or a group of objects to be detected. The position, the distance and the velocity of the at least one object to be detected and/or the at least one group of objects to - be detected are determined accordingly. A further method uses a camera which emits a radiation source. The method can particularly used on airfields.