How to obtain building measurements from a LIDAR data?

Hii,, I am doing project on building model creation from LIDAR data. I have seperated the ground and non ground points and from that segemnted building mesurements have obtained. now i need to extract building measurements to create a building model.

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer