Finding the distance of object using a laser pen and an ordinary web-cam !

These day there are many range finder devices which are used almost everywhere from robotics to country s defense system. All these devices work well, but there are portability and cost concern for general purpose robotics applications. From my previous articles I ve been creating cool programs related to web cam and now I ve come up with a laser-web cam range finder. It could tell how far a object is by just using very cheap laser pen and an ordinary web cam.