A device for measuring a three-dimensional shape of an elongate member which comprises a first image detector and a second image detector, a projected image computing device, and a center line computing device. The first image detector and the second image detector detect a two-dimensional image of an...http://www.google.co.uk/patents/US5289261?utm_source=gb-gplus-sharePatent US5289261 - Device for measuring a three-dimensional shape of an elongate member
