1. An adaptive torch positioner system;Porsander,1987
2. A true steam-tracker for arc welding;Björkelund,1987
3. An optical sensor for real-time positioning, tracking and teaching of industrial robots;Shoham;IEEE Trans. on Industrial Electronics,1984
4. An optical proximity sensor for measuring surface position and orientation for robot manipulation;Kanade,1984
5. Optical sensors for range and depth measurement;Kino,1986