Method for extracting a point target from a video signal and circuit arrangement for carrying out the method

摘要

Method for extracting a point target from a video signal, i.e. for detecting an approximately point-shaped target object and for distinguishing this target object from interfering distributed targets, preferably clouds. The target object and the interfering targets are picked up by an optronic sensor and are contained in the form of image signals in the video signal provided by the sensor. After carrying out a number of process steps, an output signal representing the presence of a point target is generated at the output of a coincidence circuit. <IMAGE>