System, especially for timing races, containing a photosensor and method for adjusting the alignment of such a system on a finish line

摘要

Optical system to be placed in the extension of the crossing line or finishing line of a race having computer and electronic based means for precise alignment of the optical device with the crossing line. System comprises an optical device for projecting the image of a crossing line on to a photo-sensitive recorder, which generates electronic signals representative of the image projected by the optical device, means for treating the signal image, means for display of a video image of the image on a screen, where the original captured image is in the form of a matrix of pixels (CCD), treatment means for generation of a reticule superimposed of the video image, and means for extraction of a column of pixels form the capture matrix which corresponds to the reticule image on the screen.