Abstract:Vehicle-borne laser scanning system integrated laser radar scanning technology, positioning and orientation technology, panoramic image acquisition technology. This could obtain three-dimensional information and texture information at the same time, which play an important role in the digital city informatization construction. In this paper, based on analyzing the results of the vehicle-borne laser scanning data, it achieved real three-dimensional measurement function. This paper elaborated the principles of scalability and achieved real measurement of key technologies. And we developped a scalable real application examples based on DirectX, and laid the foundation for scalable real service.