Image Number 5 for United States Patent #7110618.
The subject of the invention is a system for photogrammetric determination of centers of gravity of signal markers in moving objects. For reduction of the herein produced image data prior to the actual image measurement in a computer, patterns of adjacent pixels across lines are evaluated in a data reduction step. The various possibilities of light/dark constellations of groups of adjacent pixels serve therein as input signals of an evaluation logic, which is an end automation. Various patterns trigger transitions between the finite conditions of the automation. Depending upon the current condition of the final automation and actual detected pixel patterns the final automation causes varying operations for identification of characteristic features of the signal marks and for data technological combining of the parameters necessary for determining centers of gravity.