An ITV camera picks up an image of an image pickup region including a moving object and a fixed object which serves as a reference to measure a distance. Images are fetched through the ITV camera at a first aperture which discriminates between a background and the fixed object and a second aperture which...http://www.google.de/patents/US5889878?utm_source=gb-gplus-sharePatent US5889878 - Moving object image pickup apparatus
